Browse Topic: Doors

Items (167)

Requirements Extract for AS4159 Specification for an Automated Interchange of Standards Data

5/1/2026

This digital standard is a requirements extract of AS4159 Specification For An Automated Interchange Of Standards Data. This file contains a general requirements extraction as well as files that are optimized for use with Doors Classic, Siemens Polarian, and PTC.

Requirements Extract for AS6500A Manufacturing Management Program

SA-DIG-00005

5/1/2026

This digital standard is a requirements extract of AS6500A Manufacturing Management Program. This file contains a general requirements extraction as well as files that are optimized for use with Doors Classic, Siemens Polarian, and PTC.

Requirements Extract for AS861C Minimum General Standards for Oxygen Systems

SA-DIG-00001

5/1/2026

This digital standard is a requirements extract of AS861C Minimum General Standards for Oxygen Systems. This file contains a general requirements extraction as well as files that are optimized for use with Doors Classic, Siemens Polarian, and PTC.

Requirements Extract for AS5127D Aerospace Standard Test Methods for Aerospace Sealants Methods for Preparing Aerospace Sealant Test Specimens

SA-DIG-00002

5/1/2026

This digital standard is a requirements extract of AS5127D Aerospace Standard Test Methods for Aerospace Sealants Methods for Preparing Aerospace Sealant Test Specimens. This file contains a general requirements extraction as well as files that are optimized for use with Doors Classic, Siemens Polarian, and PTC.

Requirements Extract for AS13001A Delegated Product Release Verification Training Requirements

SA-DIG-00006

5/1/2026

This digital standard is a requirements extract of AS13001A Delegated Product Release Verification Training Requirements. This file contains a general requirements extraction as well as files that are optimized for use with Doors Classic, Siemens Polarian, and PTC.

Requirements Extract for AS50881H Wiring Aerospace Vehicle

SA-DIG-00003

5/1/2026

This digital standard is a requirements extract of AS50881H Wiring Aerospace Vehicle. This file contains a general requirements extraction as well as files that are optimized for use with Doors Classic, Siemens Polarian, and PTC.

Developing Customer Loss Function for Door Opening Angle in Passenger Cars: Balancing the Ergonomic Performance between “Entry/Exit (Ingress/Egress) Accommodation” and Door Reachability

15-17-03-0014

7/27/2024

Abstract Occupant packaging is one of the key tasks involved in the early architectural phase of a vehicle. Accommodation, as a convention, is generally considered related to a car’s interior. Typical roominess metrics of the occupant like hip room, shoulder room, and elbow room are defined with the door in its closed condition. Several other roominess metrics like knee room, leg room, head room, and the like are also specified. While all the guidelines are defined with doors in their closed condition, it is also important to consider the dynamics that exist while the occupant is entering the vehicle. This article expands the traditional understanding of occupant accommodation beyond conventionally considering the vehicle interior’s ability to accommodate anthropometry. It broadens the scope to include dynamic conditions, such as when doors are opened, providing a more realistic and practical perspective. As a luxury car manufacturer, it is important to ensure the best overall customer experience at each touch point of the vehicle. When the customer enters the vehicle, there should be sufficient space provided by the door opening angle for a comfortable entry. The larger the opening angle, the better is the “entry accommodation” and vice versa. However, a wide-open door also necessitates the customer to bend more, after being seated, to reach its handle and close it. Thus, it becomes a compromise between what is possible as accommodation while the customer is entering the vehicle and how easy it is to close the door after being seated. The same logic holds good while the customer opens the door and exits the vehicle. This article aims to develop a customer loss function (CLF) between the two conflicting criteria by considering relevant anthropometric distribution of customers. This study focuses on driver compartment and the methodology developed is also pertinent to rear compartment with minor adaptations. Since driver’s seating position is heavily dependent on anthropometry, finer details of occupant seating position are also considered in this study. CLF developed in this article will help the designer and packaging engineers in making informed decisions on the door opening angle, by being conscious of the customer loss/gain for defined performance metrics.

Rajakumaran, Sriram, Sreenivas, Kalyan

Flight Deck Interior Doors for Transport Aircraft

ARP4101/8A (Current)2/18/2020

This document recommends criteria for standardizing flight deck interior doors and their operation to optimize their use under normal and emergency conditions.

S-7 Flight Deck Handling Qualities Stds for Trans Aircraft

Modern Software Links Legacy Systems

TBMG-359912/1/2020

Most of today's devices, equipment, and systems come with “intelligent” or “smart” capability built in, along with wired or wireless network connectivity. This is great for new work but many end users have decades worth of legacy systems in place and would like to obtain information from these functional areas without extensive retrofitting.

Vehicle Door Cutline Determination with Mathematical Modelling on CATIA V5

2019-28-010710/11/2019

Door shut-line definition is the first vital step in car body door engineering and depends on the hinge position, hinge shape, manufacturing capabilities and other parameters. In the design process, once the hinge axis definition is finalized door shut-line is defined which should satisfy two major requirements. The requirements are clearance between the door outer surface with its surrounding components (like hinges, fender, other door etc.) and assembly feasibility. Another one is the manufacturability of the proposed design. The above conditions must be checked on different locations of the door as well as w.r.t different openings of the door. The paper presents a mathematical model to determine the door shut-line position with great computational efficiency. This method propounds closure engineer with parameters to define the shut line rather than going for cumbersome manual iterative process. Instead of following an iterative approach to determine a limit for the shut-line, paper presents a mathematical formulation with an implicit equation. An innovative approach to solve implicit equation on CATIA is also discussed which significantly reduces the processing time. This paper inherently discusses a series of challenges which a user faces while determining the door shut-line and provides feasible solutions for those problems.

Askari, Hasan, Pandey, Pawan, Raadhaasaminathan, Sreebalajinarayanan

Door Closure Sound Quality Engineering Process

2019-01-15236/5/2019

An important factor contributing to a customer’s subjective perception of a vehicle, particularly at the point-of-purchase, is the sound created by the passenger doors during closure events. Although these sounds are very short in duration the key systems that control the sounds produced can be highly coupled. Similarly, the necessary efforts required to understand key design criteria affecting the sound can also be highly complex. Within this paper sub-systems affecting the door closure sound are evaluated to understand key structural properties and behaviors toward the contribution to the overall sound produced. This begins with the subjective preferences of typical sounds and the difficulties with both measuring and reproducing these sounds appropriately and leads directly to the target setting and target cascading process. With targets in place, it becomes important to link them with physical measurements of the vehicle and door system to identify the key controlling mechanisms that can be affected through design. The behavior of the door system during a closure event is key for the sound produced and can be studied to understand both the nearfield acoustic field generated as well as the structural vibration patterns. This can be accomplished during a closure event and linked to in-lab assessments that allow for greater repeatability and flexibility. Boundary conditions for the door structure are also relevant to the sound produced, including the transmission of forces into the seals, latch and striker, and bump-stops, as well as understanding the effects from the vehicle interior cavity. Once the key controlling mechanisms affecting the door closure sound quality are understood, it allows for the sound produced to be shaped as desired. This can be accomplished by leveraging analytical modeling efforts, supplemented with necessary test data, to design key components and systems to achieve the desired sound.

Freeman, Todd, Engels, Bret

Sound Quality Prediction Modelling for the Transient Sound of Vehicle Door Latch Closure

2019-01-15176/5/2019

Door latch closure noise has contribution on sound quality of vehicle door slam sound. This paper focuses on the modelling of sound quality for door latch closure sound. 24 various latch closure sound samples were recorded to be evaluated subjectively. A novel Dynamic Paired Comparison Method (DPCM) was introduced for subjective evaluation. By eliminating the redundant comparison pairs the DPCM dramatically reduced the evaluation work load comparing to the traditional Paired Comparison Method (PCM). Correlation between subjective evaluation results and psychoacoustic metrics was analyzed to find out the most relevant metrics as inputs for the subsequent prediction model. Besides, the shudder effect induced by multi-impact of latch components during closing movement was also found strongly affecting the subjective perception of door latch closure sound. Therefore, a new metric Shudder Level which is graded in 3 levels describing this shudder effect was developed and then quantified as one of the model inputs. The sound quality of door latch closure was modeled by means of Multi-Linear Regression Function (MLRF) both with and without the Shudder Level. The results show that the model which takes the shudder effect into account gives a better prediction on door latch closure sound quality.

Jin, Chang, Zhang, Tianpeng, Ma, Liying, Zhang, Tao, Zhou, Yi

A Study on Door Clips and Their Influence on BSR Performance

2019-01-14686/5/2019

Squeak and rattle concerns account for approximately 10% of overall vehicle Things Gone Wrong (TGW) and are major quality concern for automotive OEM’s. Objectionable door noises are one of the top 10 IQS concerns under any OEM nameplate. Door trim significantly contributes to overall BSR quality perception. Door trim is mounted on door in white using small plastic clips with variable properties that can significantly influence BSR performance. In this paper, the performance of various door clips is evaluated through objective parameters like interface dynamic stiffness and system damping. The methodology involves a simple dynamic system for the evaluation of the performance of a clip design. Transmissibility is calculated from the dynamic response of a mass supported by clip. Parameters such as interface stiffness and system damping are extracted for each clip design. Variation of inner panel thickness is also considered when comparing clip performance. In a second step, clip characteristics are transferred to an equivalent finite element model to predict the response of mass supported by clip. The equivalent clip model is compared with generic clip model for analyzing squeak and rattle simulation in a door assembly. A satisfactory correlation has been achieved between measured and simulated response of clip. Design targets are finally presented for the selection of door clips in the product development process, to avoid rattle issues in door trim assemblies.

Mohammed, Riyazuddin, Raghavendran, Prasath, Chaudhari, Naresh, Kumar, Amit

Jeep revives its pickup mojo with 2020 Gladiator

19AUTP05_155/1/2019

Get ready for the fractionalization of the U.S.'s raucous pickup-truck market. Launching what's surely one of the year's most-anticipated and potentially significant new models, Jeep engineers and planners insist they went out of their way to ensure the 2020 Gladiator was developed as a genuine pickup and not “a Wrangler with a bed.” But everyone knows Jeep would've been crazy to stray too far from the radiant demand for the new JL-generation Wrangler, so excuse us if the Gladiator does, well, at least look like just that: a 4-door Wrangler Unlimited-with a bed.

Visnic, Bill

Automatic Drilling and Fastening System for Large Aircraft Doors

2019-01-13463/19/2019

Electroimpact has developed a system for drilling and fastening of cargo door structures which efficiently addresses many of the manufacturing challenges that such parts present. Challenges to door automation include 1) the presence of an inner skin that must be processed, in addition to the outer skin, and 2) a stiff frame structure, which makes the clamping and drilling processes that are typical to automated fastening machines very unforgiving of any errors in workpiece positioning. In this case, the manufacturing cell was to be installed in an existing facility with very limited ceiling height, further complicating the system and process design. New methods were devised to solve these problems, and the solutions found will likely have utility in future applications.

Bigoney, Burton

Automotive Door Opening Durability Simulation Using Detail Checkstrap Mechanism

2019-26-02731/9/2019

In automotive design space, door opening durability is one of the important design attribute to build a door structure. Customer often interact with door while ingress and egress a vehicle and that builds a perception of vehicle in customer’s mind. Now days, Computer Aided Engineering (CAE) is used extensively to simulate the real time door opening and closing event for designing the door structure for durability performance. Early prediction of durability performance and developing the countermeasures saves great amount of time and cost. This paper provides a brief study of detail checkstrap mechanism and its influence on door durability performance. Door checkstrap plays an important role in swing door design, it assists the door opening and closing with the help of check arm profile guided by roller and spring. This allows the load transferred from door to body through checkstrap first and then through hinges. The load interval between door full open to door over-open becomes critical for door durability performance. During this event, the majority of energy absorbed by the checkstrap mechanism and attached door & body components. Hence, the checkstrap mechanism representation is very important for the door durability simulation. Door dynamic analysis for overopen load is performed in LSDYNA solver and fatigue analysis is performed in nCode.

Mahadule, Roshan N., Patil, Suhas, Hanamshet, Madhav

Cadillac pulls the wraps off two new V-Series sedans

19AUTP08_191/1/2019

Cadillac has added two more sedans to its V-Series performance lineup, the 2020 CT4-V and CT5-V. The CT4-V will square off against established C-segment players such as the BMW 3-Series and Mercedes-Benz C-Class, along with Hyundai's new Genesis G70. The CT5-V will compete with the BMW 5-Series and Audi A6. The two new 4-door sedans join the larger 2019 CT6-V sedan in the V-Series stable, though the company noted that the series is evolving to be less focused on hard-core, track-worthy machines, and more about sporty and comfortable daily drivers. “We are inviting even more customers into the V-Series family,” said Brandon Vivian, Cadillac executive chief engineer, “by adding a new level of elevated performance between our Sport models and the ultimate, high-performance track capability that the V-Series has grown to represent.”

Seredynski, Paul

Porsche reveals eighth-generation of fabled 911

19AUTP01_151/1/2019

Regularly updating and evolving the Porsche 911's aesthetic signature might seem an impossible task. But more than half a century after its birth, the unveiling of the eighth-generation at the 2018 L.A. Auto Show demonstrated that it is in fact still a totally possible art-with design boss Michael Mauer the chief artist. Designated in-house as the 992 series and slightly larger than the outgoing 991, it is launched in rear-wheel-drive and all-wheel-drive forms-Carrera S and Carrera 4S-and now only in the wide-body width previously used for the Carrera 4 GT3 and GTS, instead of two body widths. Across the nose, the new 911 is 45 mm (1.8 in) wider than the outgoing version, a figure some 911 purists may look at askance, as growth in recent years has already been considerable.

Birch, Stuart

Study of the Sliding Door Shaking Problem and Optimization Based on the Application of Euler’s Spiral

10-02-03-001410/3/2018

This study focuses on the sudden shaking phenomenon of a sliding door passing through a corner. This phenomenon requires attention because shaking during movement can lead to a harsh operation feeling and a short service life. An experiment based on a test setup was conducted, and the sudden change in the acceleration of a sliding door panel was measured. Based on multi-body dynamics (MBD) analysis and a rigid-flexible coupled model of the sliding door system, the cause of the sudden shaking was determined to be the discontinuous curvature of the middle rail trajectory. A transition curve was proposed as the solution for the discontinuous curvature, and Euler’s spiral was applied in the redesign of the middle rail trajectory. Verified by simulations, the results exhibit considerable improvement in sliding door movement stability, with large reductions in the maximum center of mass (CM) acceleration and guide roller impact force.

Chen, Ziming, Li, Luoxing, Wu, Yunlong

Striker with bumper implementation to improve chucking noise issues

2018-36-01279/3/2018

Investing in quality as added value to products becomes a means of guaranteeing satisfaction as well as customer loyalty, making it competitive in its respective segment. In the automotive business, this has not been different, It can observed a progress in the perception and customers demand in quality in the last few years. At the same time, that the industries need to guarantee the cost and time of response to the dissatisfaction of the customers. In this project, was possible to implement a locking door concept, with an effective solution to the door vibration problem in a B platform, vehicle model in South America.

Viegas, Rosiane, Magalhães, Julio

Automotive Engineering: May 2018

18AUTP055/3/2018

Testing for cold-climate comfort AE goes way north to the Arctic Circle for an inside look at Hyundai's winter testing of the new Nexo FCV and Kona EV and their unique and critical HVAC systems. Innovation more than skin deep A new wave of engineered plastics are delivering structural, mass-reducing, and aesthetic benefits for new vehicle applications. A secret weapon for roof-crush testing Before you crush that bus or racecar chassis, find out how engineers at CAPE are optimizing test-rig performance. Editorial: Tesla's Model 3 is two very different cars SAE Standards News A hive of activity Supplier Eye Why aren't there more unibody pickups? The Navigator We can't trust humans to supervise machines Acura and ArcelorMittal debut world-first hot-stamped door ring system on 2019 RDX Powertrain analyst: Light-vehicle fleet needs big gains to meet tightening emissions regs Toyota unveils more gasoline ICEs with 40% efficiency IAV using 3D-printed pistons for engine testing 2018 Kona debuts Hyundai's new B-SUV platform Nissan variable-compression engine gets first shot at volume with new 2019 Altima Q&A Honeywell's Geoff Duff talks turbos

Eleven Instrumented Motorcycle Crash Tests and Development of Updated Motorcycle Impact-Speed Equations

2018-01-05174/3/2018

Eleven instrumented crash tests were performed as part of the 2016 World Reconstruction Exposition (WREX2016), using seven Harley-Davidson motorcycles and three automobiles. For all tests, the automobile was stationary while the motorcycle was delivered into the vehicle, while upright with tires rolling, at varying speeds. Seven tests were performed at speeds between 30 and 46 mph while four low-speed tests were performed to establish the onset of permanent motorcycle deformation. Data from these tests, and other published testing, was analyzed using available models to determine their accuracy when predicting the impact speed of Harley-Davidson motorcycles. The most accurate model was the Modified Eubanks set of equations introduced in 2009, producing errors with an average of 0.4 mph and a standard deviation (SD) of 4.8 mph. An updated set of Eubanks-style equations were developed adding data published since 2009, and advancing from two equations (pillars/axles and doors/fenders) to four equations (axles, pillars/bumpers, doors, and fenders). When applied to the subject tests, the newly developed set of equations produced an average error of 3.5 mph (SD = 4.3 mph). With respect to all available data (N = 99), the equations produced an average error of 0.1 mph and a standard deviation of 5.8 mph. The errors were also analyzed for each of the four equations developed here, and confidence intervals offered. This research, which represents the first detailed analysis of Harley-Davidson motorcycles’ collision response, indicates they behave in a manner similar to previously tested motorcycles. Further, the equations developed and presented here give accident investigators a refined method for estimating the impact speed of an upright motorcycle, Harley-Davidson or otherwise, having struck an automobile with its front tire.

Peck, Louis, Manning, Joseph, Bartlett, Wade, Dickerson, Charles, Deyerl, Eric

An Optimal Design of Vehicle Swing Door Using Metamodeling Techniques

2018-01-10224/3/2018

In side-closures’ design, mass reduction provides numerous benefits in addition to reduced cost. This paper presents a Meta model based non-linear durability optimization to develop a lightweight structure for vehicle swing door. A surrogate model developed is using Kriging methodology and the thickness of the door components are given as input design variables. Adaptive Multi-Objective Genetic Algorithm (AMGA), a nonlinear optimization technique, is used in this study, to formulate the mass minimization under durability constraints. The optimized swing door design shows the overall mass saving of ~10% over initial design in terms of frame and sag deflection. The present investigation shows better effectiveness and practical applicability to develop the lightweight structure for the vehicle swing door. From the comparative study, Kriging method is found to be more effective in terms of measuring the accuracy, robustness and efficiency of the results than the Radial basis function (RBF).

Zaman, Thoheer, Kumar, Arun, Valiyaveettil Nazir, Fazil, Velu, Jayaprakash, Appana, Kameshwara rao

Ultra-Light Weight Automotive Door: Design and Validation

2018-01-01114/3/2018

An Ultra-Light Door (ULD) has been developed that is 40% lighter than a baseline 2016 mid-size vehicle’s driver side door. The ULD scope encompasses the entire door, including the door-in-white (DIW), interior trim, glazing, hardware, wiring, etc. To achieve such a substantial mass reduction while still meeting the baseline vehicle’s performance metrics (including safety, durability, NVH, appearance, etc.) at a minimal cost increase, the door design relies on a comprehensive full system approach that includes a unique architecture in addition to lightweight materials and components. This paper details the ULD design concept, simulated performance results, the current status of vehicle level validation, and comparisons between component level CAE predicted performance and physical test results.

Reaburn, Timothy, Skszek, Timothy W.

CAE Simulation of Automotive Door Upper Frame Deflection Using Aerodynamic Loads

2018-01-07164/3/2018

Upper frame deflection of automobile doors is a key design attribute that influences structural integrity and door seal performance as related to NVH. This is a critical customer quality perception attribute and is a key enabler to ensure wind noise performance is acceptable. This paper provides an overview of two simulation methodologies to predict door upper frame deflection. A simplified simulation approach using point loads is presented along with its limitations and is compared to a new method that uses CFD tools to estimate aerodynamic loads on body panels at various vehicle speeds and wind directions. The approach consisted of performing external aerodynamic CFD simulation and using the aerodynamic loads as inputs to a CAE simulation. The details of the methodology are presented along with results and correlation to experimental data from the wind tunnel.

Doppalapudi, Sudhakar, Sbeih, Khaled, Srinivasan, Kumar, Bhandarkar, Ramchandra

Smart Fabric Stores Information Without Electronics

TBMG-283392/1/2018

Conductive thread — embroidery thread that can carry an electrical current — often is combined with other types of electronics to create fabric that lights up or communicates. This thread also has magnetic properties that can be manipulated to store either digital data, or visual information like letters or numbers. This data can be read by a magnetometer, an inexpensive instrument that measures the direction and strength of magnetic fields, and is embedded in most smartphones.

Kiekert unveils automatic-door tech for autonomous vehicles

18AUTP01_131/1/2018

A new electronic side door latch is the prelude to vehicle side doors that automatically open and close on command. “Our endgame is about providing a system in which the side doors automatically open when an autonomously-driven car arrives for passengers,” said Hector Verde, Director of Product Development for the Americas at Kiekert. Those doors would also close automatically after the occupants are in the vehicle. All this could happen with just the push of a button or sensor recognition, he added.

Buchholz, Kami

Thermoplastic Fuselage Demonstrator

TBMG-2766110/1/2017

Porcher Industries Badinières, France +33 (0)4 74 43 10 10

Door Audio Response Hybrid Modeling and Assesment

2017-01-18496/5/2017

The door response to audio excitation contributes to the overall performance of the audio system on several items. First, acting as a cabinet, it influences the loudspeaker response. Second, due to the door trim inner panel radiation, the radiated power is disturbed. A third effect is the regular occurrence of squeak and rattle, that will not be considered at this stage. Design issues regarding these attributes are numerous, from the loudspeaker design to door structure and trim definition. Modeling then appears as an unavoidable tool to handle the acoustic response of the loudspeaker in its actual surrounding. Since most of the issues are related to low frequency excitations (<200 Hz), and considering the fact that several loudspeaker references may be used in the same door, it was chosen to model the system in a hybrid manner: the electro-dynamical behavior of the speaker is modelled using a classical 1D modelling (Thiele and Small) while the door vibro-acoustic behavior is modelled by means of Finite Elements. After the vibroacoustic coupling between the loudspeaker and the door is fully described, transmission paths are investigated, showing possible simplifications. Electroacoustical indicators are then proposed to control the door design regarding audio quality issues. Sensitivity of the indicators to some design variables will then be shown.

Gagliardini, Laurent, Leneveu, Romain, Cloix, Aurélien, Durr, Alexandre

Structural and Flight Test of a Composite Bubble Door for the CHI CH-47D

F-0073-2017-12191

5/9/2017

ABSTRACT Columbia Helicopters, Inc, (CHI) has procured several military-surplus CH-47D helicopters for use in heavy-lift operations, including fire-fighting and other external lift operations. For decades, CHI has successfully utilized Direct Visual Operational Control (DVOC) to precisely control the load at the end of a long line. The key to DVOC is the use of a bubble window at both pilot and co-pilot positions on the aircraft, which allows the pilot flying the aircraft to see the load directly. CHI designed, manufactured, tested, and qualified a replacement cockpit door to hold a bubble window in the CH-47D. The new doorframe is made of carbon-fiber epoxy composite, holds an 18-inch-deep bubble window in the upper section, and holds a sliding ventilation window in the lower section. An abbreviated composite building block test was completed to prove the structure, and flight test was used to determine the optimal flight attitude to evacuate the cockpit of smoke.

Pilkington, Lawrence, Solem, Courtney, Royce, Anna

Design of Automotive Structures Using Multi-Model Optimization

2017-01-13423/28/2017

The use of structural optimization in the design of automotive structures is increasingly common. However, it is often challenging to apply these methods simultaneously for different requirements or model configurations. Multi-model optimization (MMO) aims to simplify the iterative design process associated with optimizing multiple parts or configurations with common design variables especially when conflicting requirements exist. In this paper, the use of MMO is demonstrated to evaluate the feasibility of an automotive door concept using an alternative material.

Zagorski, Nicolas, Nelson, Eric, Caliskan, Ari, Li, Allen

Mechanical Design, Prototyping, and Validation of A Martian Robot Mining System

2017-01-13053/28/2017

A robot mining system was developed by the State Space Robotic undergraduate student design team from Mississippi State University (MSU) for the 2016 NASA Robotic Mining Competition. The mining robot was designed to traverse the Martian chaotic terrain, excavate a minimum of 10 kg of Martian regolith and deposit the regolith into a collector bin within 10 minutes as part of the competition. A Systems Engineering approach was followed in proceeding with this design project. The designed mining robot consisted of two major components: (1) mechanical system and (2) control system. This paper mainly focuses on the design and assessment process of the mechanical system but will also briefly mention the control system so as to evaluate the designed robotic system in its entirety. The final designed robot consisted of an aluminum frame driven by four motors and wheels. It utilized a scoop and lifting arm subsystem for collecting and depositing Martian regolith. This subsystem was powered by two computers and used two commercially-of-the-shelf sensors to navigate the simulated Martian terrain. The State Space Robotics team is composed of engineering students with different backgrounds. The present design project provides a multidisciplinary environment for the students to explore and develop their skills in designing, problem formulating and solving, teamwork, communication, project management, and outreach.

Liu, Yucheng, Batte, Jeremy, Collins, Zachary, Bateman, Jennifer, Atkins, John, Davis, Madelyn, Salley, David, Bethel, Cindy L., Ball, John, Archibald, Christopher

Multidisciplinary Design Optimization of Automobile Tail Door

2017-01-02513/28/2017

Stringent emission norms by government and higher fuel economy targets have urged automotive companies to look beyond conventional methods of optimization to achieve an optimal design with minimum mass, which also meets the desired level of performance targets at the system as well as at vehicle level. In conventional optimization method, experts from each domain work independently to improve the performance based on their domain knowledge which may not lead to optimum design considering the performance parameters of all domain. It is time consuming and tedious process as it is an iterative method. Also, it fails to highlight the conflicting design solutions. With an increase in computational power, automotive companies are now adopting Multi-Disciplinary Optimization (MDO) approach which is capable of handling heterogeneous domains in parallel. It facilitates to understand the limitations of performances of all domains to achieve good balance between them. The paper presents the MDO of a Tail door of a sports utility vehicle (SUV) which is carried out at the stage where major structural design has been finalized, and the only gauge of the tail door panels can be taken for design variables. The objective of the exercise was to minimize the mass while meeting various performance parameters. Modal and frequency response function (FRF) load cases are considered for noise vibration and harshness (NVH) domain and stiffness load cases for durability domain. Crashworthiness domain load cases for the tail door were not considered here because crash norms are not applicable for rear impact. Response surface based optimization method has been selected for the optimization considering resource availability and dexterity of being applied in various domains. A sensitivity study was used to identify critical panels for each performance parameter. Broken constraint charts were studied to identify the load cases which limit the mass reduction opportunity. The study showed twelve percent of mass saving which is significant for automotive doors.

Sharma, Suneel Kumar, Sahu, Ashish Kumar, Bhosale, Subhash

System and Method for Space Utilization Optimization and Visualization

TBMG-2552110/1/2016

NASA’s Langley Research Center has developed a space-allocation and planning software system to allow for more effective and efficient facility usage. It also provides a customizable strategy for organizing personnel and project teams to maximize productivity and synergies among employees. Cost-reduction solutions are suggested based on organizational input constraints related to the facility. The program uses a standard Web browser to allow for visualization of an entire organization down to individual rooms. The planning tool is based on algorithms that were developed using ArcGIS software and Visual Basic codes, which enable evaluation of different space-management scenarios in real time.

Airbus brings four dimensions to Airspace

16MEIP06_136/1/2016

As Airbus looks to launch new-engine option (neo) aircraft, it has announced it is also launching a new cabin brand it calls “Airspace by Airbus.” In essence, Airbus is hoping that its Airspace will enhance the passenger experience just as the new engines will enhance the airlines' bottom line due to efficiency increases. Culminating in what Airbus describes as “the best of [its] cabin innovation and design,” Airspace offers “a flexible canvas as a back-drop to enhance the airlines' own brands.” The new cabin is being touted as offering a more relaxing and functional environment for the passenger while optimizing space utilization. It will be launched with the A330neo wide-body airliner, which is inspired by the cabin of its in-service sibling, the A350 XWB.

Broge, Jean L.

Closure Slam CAE Method Investigation for Automobiles

2016-01-13494/5/2016

In the current scenario, the major thrust is to simulate the customer usage pattern and lab test using virtual simulation methods. Going ahead, prime importance will be to reduce the number of soft tool prototype for all tests which can be predicted in CAE. Automotive door slam test is significantly complex in terms of prediction through simulation. Current work focuses on simulating the slam event and deriving load histories at different mounting locations through dynamic analysis using LSDyna. These extracted load histories are applied to trimmed door Nastran model and modal transient analysis is performed to find the transient stress history. This approach has a significant advantage of less computation time and stress-convergence with Nastran for performing multiple design iterations compared to LSDyna. Good failure correlation is achieved with the test using this approach. Using these load histories, design improvements are evaluated and robustness of the approach is validated. An attempt is made to extract load histories using virtual mule in LSDyna. So, at an early stage in a project, using the only hinge and latch CAD location with closure mass, inertia and center of gravity, the load histories can be extracted and design improvement can be evaluated. Detailed analysis of predicting over-slam through simulation and effect of the position of glass on strain at different locations is highlighted.

Unadkat, Siddharth Bhupendra, Kangde, Suhas, Burkul, Mahalingesh, Badireddy, Mahesh

The Topology Optimization Analysis on Rope-Wheel Glass Lifter

2016-01-13844/5/2016

Deng, Mengshi, Lan, Jian

Small Overlap Impact Countermeasure-Front Door Hinge Pillar Dual Box

2016-01-04024/5/2016

Since the inception of the IIHS Small Overlap Impact (SOI) test in 2012, automotive manufacturers have implemented many solutions in the vehicle body structure to achieve an IIHS “Good” rating. There are two main areas of the vehicle: forward of vehicle cockpit and immediately surrounding the vehicle cockpit, which typically work together for SOI to mitigate crash energy and prevent intrusion into the passenger zones. The structures forward of vehicle cockpit are designed to either 1) absorb vehicle energy from impact to the barrier, or 2) provide enough strength and rigidity to aid deflection of the vehicle away from the barrier. The structures which are immediately surrounding the vehicle cockpit (known as pillars and rocker/sills) are traditionally components designed to be highly rigid sheet metal panels to protect the occupant during crash events. This paper focuses on a concept for a portion of the cockpit structure that combines energy absorption and high rigidity structure, which are not typical in this area of a vehicle’s architecture. Using CAE methods, it is observed that a vehicle’s SOI structural rating will be enhanced utilizing the presented concept.

Elliott, Eric S., Roche, Christopher, Reddy, Jashwanth

Moon Tours Android

TBMG-241183/1/2016

This Android app provides a native interface to the Lunar Mapping and Modeling Portal’s (LMMP) lunar data archive and analysis tools. It complements the iOS app previously released, incorporating a very similar feature set. Both apps contain a subset of the functionality available in the desktop/Web version. Compared to the iOS version of the LMMP, the Android version provides the additional tools necessary to perform elevation analysis and perimeter/area measurements.

AS2369 Cover for Access Door Rectangular Type (Moulded)

AS2369-4 (Current)12/4/2015

No scope available.

Engine and Airframe Technical Standards Committee (TSC)

SPSCGR

TBMG-2326511/1/2015

SPSCGR generates a contact graph suitable for use by the ION (Interplanetary Overlay Network) DTN (Delay/Disruption Tolerant Network) implementation from data provided by the JPL SPS (Service Preparation System) Portal. Prior to SPSCGR, there was no way for a mission or other entity to route DTN traffic across the DSN without manually constructing a contact graph. SPSCGR automates this process of contact graph construction.

Novel Aircraft Ground Operation Concepts Based on Clustering of Interfaces

2015-01-24019/15/2015

The projected uptick in world passenger traffic challenges the involved stakeholders to optimise the current aviation system and to find new solutions being able to cope with this trend. Since especially large hub airports are congested, operate at their capacity limit and further extensions are difficult to realise. Delays due to late arrival of aircraft or less predictable ground operation processes disrupt the airport operations in a serious way. Various concepts improving the current turnaround processes have been presented thus far, whereby radical aircraft design changes have little chances for realisation in the short term. By maintaining the established overall aircraft configuration, the concepts promote higher probability to become commercially available for aircraft manufactures and operators. Based on a clustering of aircraft interfaces, such as doors and service panels, for state-of-the-art passenger aircraft, concepts targeting to reduce the required resources and time are presented. First studies show that relocating and installing wider passenger doors allow shortening the passenger egress and ingress process by up to 55% compared to current short-to-medium haul aircraft. From a cabin layout point of view, a merger of two galleys and spatial separation from the cabin entrance area would enable a parallelisation of de-/boarding and catering operations which save up time to 20%. The implementation of these single improvements radically shortens the average turnaround time by almost 55% for a full-service carrier and 32% for a low-cost carrier scenario. Furthermore, weight penalties due to additional installed aircraft systems are translated into block fuel deltas of around +0.3% on a 500 nm (926 km) trip. The presented concepts promote a large improvement potential to turnaround time with minor-to-moderate aircraft modifications as well as a higher level of process robustness and thus have the potential to increase airline revenues.

Schmidt, Michael, Nguyen, Philipp, Hornung, Mirko

Wallops Flight Facility 6U Advanced CubeSat Ejector (ACE)

TBMG-22549

8/1/2015

Six-unit (6U) CubeSats are recognized as the next nanosatellite to be considered for standardization. The CubeSat standard established by California Polytechnic University (Cal Poly), which applies to 1U–3U sizes, has proven to be a valuable asset to the community. It has both provided design guidelines to CubeSat developers and a consistent, low-risk interface to launch service providers. This has ultimately led to more flight opportunities for CubeSats. A similar path is desired for the 6U CubeSat. Through this process of standardization, a consistent, low-risk interface for the 6U needs to be established.