Browse Topic: Head-up displays

Items (119)
Windshield with Enhanced Infrared Reflectivity Enables Packaging a Driver Monitor System in a Head-Up Display2021-01-01054/6/2021
Integration of a driver monitor system (DMS) in a head-up display (HUD) gives the monitor camera a continuous view of the driver’s face, since the driver always faces the road ahead. However, with both infrared (IR) illuminator and IR camera packaged in the HUD, reflectivity of the windshield is important at IR wavelengths used by the camera. Not only is windshield IR reflectivity important for a clear camera image of the driver’s face, but increasing windshield reflectivity also decreases the effect of ambient sunlight on the camera image of the driver’s face. We describe a method to measure windshield reflectivity, both for the 940 nm band used by a DMS, and for visible light for the HUD. The measurement method uses a fiber-optic spectrometer, two collimating lenses, and a method to compensate for sample tilt. The lenses are mounted on a stage that adjusts the height above the sample. As an example, this method was used to characterize an IR reflecting windshield, prepared for a prototype automotive HUD. At 940 nm, and 45° angle of incidence, the measured reflectivity is > 85% for unpolarized incident light. For visible light at 550 nm, and 62° angle of incidence, the measured reflectivity is 13.9% for both an IR reflecting windshield and for a reference windshield, for unpolarized incident light. The prototype windshield gives a good reflected image for the DMS IR camera and a good HUD image as seen by the driver. The method used to prepare this prototype windshield is suitable for high-volume production.
Lambert, David K.Itsede, FidelisTomura, KazuhiroNohara, AtsushiChou, KinryoCarty, Dylan
This document sets forth general, functional, procedural, and design criteria and recommendations concerning human engineering of data link systems. The recommendations are based on limited evidence from empirical and analytic studies of simulated data link communication, and on experience from operational tests and actual use of data link. However, because data are not yet available to support recommendations on all potentially critical human engineering issues these recommendations necessarily go beyond the data link research and include requirements based on related research and human factors engineering practice. It is also recognized that evolution of these recommendations will be appropriate as experience with data link accumulates and new applications are implemented. This document focuses primarily on recommendations for data link communications between an air traffic specialist and a pilot, i.e., air traffic services communications, although some recommendations address use of data link for flight information services. Unless otherwise specified within the text, all recommendations apply to both flight deck and ground-based data link systems. This document is intended as a guide for development and evaluation of data link systems. Human engineering considerations are an important element of data link system performance. As illustrated in Figure 1, human engineering recommendations address many component functions required for effective data link communication services in the operational environment. For presentation purposes, the recommendations are divided into five sections: General, functional, procedures, flight deck/air traffic service (ATS) workstation integration, and human-computer interface. To facilitate understanding and use of this document appropriate cross-references to interrelated recommendations appear in parentheses throughout the text.
G-10 Executive Advisory Group
This paper presents preliminary results of a pilot-in-the-loop (PIL) study of different cueing designs to reduce pilot workload in rotorcraft shipboard landings. The participants were tasked with flying an approach to touchdown on the deck of an Arleigh Burke Flight IIA class Destroyer under both day visual flight rules (VFR) and night-unaided, zeroillumination conditions. For each condition, the participants were presented with three different cue types. For the day iterations these were a generic military standard heads up display (HUD), a ship fixed tunnel in the sky (tunnel), and a virtual flight lead cueing system (FLCS). The zero-illumination night condition was deemed impossible to land with only the HUD, so it was replaced with a combination of the tunnel and FLCS for the purpose of gaining initial feedback on combining elements of different systems. Terminal landing constraints (location, heading, and impact velocity) were used as measures of pilot performance, the NASA Task Load Index (TLX) survey was used to evaluate perceived pilot workload, and the System Usability Scale (SUS) was used to rate interface and cueing usability. Initial findings showed that pilots viewed the tunnel cueing as having the lowest perceived workload while the FLCS provided the best terminal performance. All types of 3D cueing improved performance when compared to the HUD baseline. The use of 3D cueing also expanded the operational envelope to include zero-illumination conditions. For completeness, the study requires additional subjects, specifically those that have prior shipboard landing experience, as COVID-19 safety precautions paused in-person simulator testing early in the testing period. This body of work represents the next iteration of FLCS research, initially published in Ref. 1.
Walters, RobertFeigh, Dr.McCandless, Joseph
This document recommends design and performance criteria for aircraft lighting systems used to illuminate flight deck controls, luminous visual displays used for transfer of information, and flight deck background and instrument surfaces that form the flight deck visual environment. This document is for commercial transport aircraft except for applications requiring night vision compatibility.
A-20A Crew Station Lighting Committee
Development of a CAE Method for Predicting Solar Loading Impact for Electrical System Performance in an Automotive Cabin2018-01-07854/3/2018
A number of market factors such as customer demand for improved connectivity and infotainment systems, automated driver assist systems and electrification of powertrain have driven an increase in the number of electrical systems within the cabin of automotive vehicles. These systems have limited operating temperature windows, therefore markets with high ambient temperatures and solar loading represent a significant challenge due to high cabin temperatures. Traditionally climatic facilities have been used replicate the conditions seen in these markets in order to understand the performance of the electrical systems. However such facilities have a number of limitations such as fixed solar arrays, secondary radiation from the walls and substantial operating costs limiting testing to envelope tests. Therefore the requirement for CAE based approach to more accurately represent the conditions seen in the real world is clear. To this end this work presents a CAE method for predicting component and ambient temperatures within the cabin. To improve the understanding of the effect environmental factors have on cabin temperatures and to correlate the computational results an experimental methodology has been developed to collect in-field data. The key features of the test procedure include comprehensive instrumentation of vehicle cabin to measure ambient and surface temperatures, characterization of the ambient conditions local to the vehicle including; direct, diffuse and global solar irradiance, temperature, wind speed and direction. The results generated by the computational model have been also been correlated against those collected from the climatic wind tunnel to ensure robust behavior. A comparison of the temperature distributions for the real world and wind tunnel datasets is presented to determine the validity of wind tunnel testing.
Palmer, Edward W.Jansen, WilkoPalaniswamy, AdaikalaParfitt, Megan
Identifying Traffic Scenarios to Evaluate Driver Readiness in Automated Driving: An Exploratory Study2018-01-05024/3/2018
Automated vehicle technology is rapidly increasing in capability and the adoption of these technologies will become more widespread in the future. In the intermediate stages of automation where the driver is required to supplement the automated technology, it may be necessary to evaluate the driver’s readiness to take-over a part or of all the dynamic driving task (SAE, 2016). Specifically, while driving with a level 2 or 3 automated driving feature, a challenge may be that drivers with low readiness fail to take over in an appropriate manner. One important implication of assessing driver readiness is to assess driver state. In this study, we investigated candidate for a driver readiness index which was compared between manual driving (Level 0) and ACC driving (Level 1). Additionally, one more method to evaluate the readiness of the driver is to measure whether the driver anticipates potential hazards (i.e., does their foot hover over the brake or throttle). To encourage this type of behavior, vehicles could include a human-machine interface (HMI) that supports the driver to understand where potential hazards exist; however, this would need to be designed to prevent annoyance. The hypothesis for the series of studies was that showing overall traffic status allows the driver to more rapidly prepare for potential hazards when compared with no additional information (i.e., next lane vehicle turn signal). This part of the current study measured driver behavior and traffic data along a designated route in a naturalistic setting. Several traffic scenarios were identified that include overt anticipatory behavior. In this paper, we had two research questions. One is how to measure driver readiness level. Two is what type of information would be useful for maintaining readiness.
Fukui, ToshinaoRemtema, ToddAustin, BenjaminDomeyer, JoshuaFukui, ToshinaoRemtema, ToddAustin, BenjaminDomeyer, Joshua
This document is a tool for the certifying authority, cockpit designers, instrument suppliers, lighting suppliers, and component suppliers. It is an aid to understanding and meeting relavant regulatory requirements, particularly those relating to pilot compartment view {CFR 25.773(a)(2)} and instrument lights {25.1381(a)(2)} for glare arising from visible eletromagnetic radiation.
A-20A Crew Station Lighting Committee
Passengers First Light Truck - A Modern Take on a Narrow Wake2016-01-13334/5/2016
Individuals in the United States consume twice as much energy as those in any other region. Solitary workday commutes in light vehicles are the leading reason for this difference. An electric vehicle design is proposed to help catalyze more social, higher occupancy, commuting habits - through application of existing technology. Performance criteria are: 1) attract passengers to the suburban front yard at 6:30 AM, 2) match market leading crash test performance, cargo capability, and sense of freedom, and 3) deliver easier parking, better acoustics and better passenger mile efficiency. A vehicle as a rolling event venue determines a large windscreen, side-by-side upright seating arrangements, and acoustic excellence -an experience where there are only good seats. These requirements force a decision to close the wake along a vertical line to form a narrow wake. The chassis is platform batteries with dual motor electric rear drive and undetermined front drive. Findings: 1 Narrow wake synergies include: a) cargo loading on a tailgate ramp to a low 0.3m (12 inch) high load floor through a 0.8m (32 inch) wide opening - as a controlled event using an onboard powered trolley, b) passengers more safely located, and c) thick rear doors that pivot concentric with the rear axle, with no chance of damaging adjacent objects. 2 A consistent driver’s eye location, as datum, provides better forward visibility past the A-Pillar and more consistent relationships between driver, passengers and vehicle safety and content delivery systems, when compared to location off fixed pedals at the firewall. 3 Collateral benefits of the eye datum include large section B-Pillars, dual diagonal cooling circuits that apply full cooling power as the sun clocks, and a smooth transition to self-driving operation.
Fontana, Edward C.
Google Glass is equipped with a head-up display, camera, microphone, and bone conduction audio transducer serving as a loudspeaker. It also has vibration sensors and a touchpad integrated in the sidepieces of the headset. With these features, Google Glass is well suited for visualization, diagnostics, and service purposes, as well as for technical interventions and person-to-person communication.
Technological Changes and Competitive Advantage: The New Deal for Avionics Firms2014-01-21739/16/2014
Since 2000, avionics is facing several changes, mostly driven by technological improvements in the electronics industry and innovation requirements from aircraft manufacturers. First, it has progressively lost its technological leadership over innovation processes. Second, the explosion of the electronics consumer industry has contributed to shorten even more its technology life cycles, and promoted the use of COTS. Third, the increasing complexity of avionics systems, which integrate more and more functions, have encouraged new players to enter the market. The aim of this article is to analyze how technological changes can affect the competitiveness of avionics firms. We refer to criticality levels as a determinant of the market competitiveness. Certification processes and costs could stop new comers to bring innovations from the consumer electronics industry and protects traditional players. The study will compare three avionics systems regarding their patent dynamics since 1980: flight controls, Integrated Modular avionics and Head-Up Displays. We assume that differences in the market competitiveness may appear due to their differences in their related criticality level. Systems belonging to Design Assurance Level A or B required wide-range of capabilities and long-term experience. The opportunity for new comers to introduce a certified-version of their product could be constrained by certification requirements.
Beaugency, AurelieGatti, MarcRegis, Didier
Safety and Operational Improvements Using Head-Up Displays in Small Aircraft and Helicopters2011-01-252810/18/2011
Small aircraft and helicopters have an increasing need for “heads out” presentations, which means a projected presentation of symbols and images, primarely infrared, on an optical combiner in the pilots field of view. The information presented will appear at an infinite distance i.e. the focal point is far away enabling the pilot to see the symbology superimposed on and correlated to the outside world. The driving factors for a “heads out” presentations are increased safety through improved situation awareness in almost all weather conditions as well as operational improvements due to reduced landing minima prerequisites in adverse weather conditions. Also safety during taxiing and landing are improved through early detection of eventual other aircraft and objects. The landing aid is important for small aircraft like business jets that often fly into unequipped airfields. The overall benefits are reduction in number of incidents/accidents, cost savings and reduced number of diversions. For helicopters performing special transport missions, for example transporting people and gods to off-shore oil platforms, a system featuring heads out symbology and infrared imagery would mean a great safety improvement during adverse weather. The presented information shows the pilot what he needs for flight and navigation, gives guidance to assist his maneuvering of the aircraft and enhances his vision through use of special imaging sensors. The heads-out solution is configured into a sub-system in different ways. The Head-Up Display (HUD) cold be sold as a stand-alone equipment integrated into the avionics data buses or as one part of the total cockpit display system or as an Enhanced Flight Vision System (with the display itself and an infrared camera). New types of head-up displays are no longer designed as two units, an over-head projector and a combiner, but built into one single unit using new optical solutions. In combination with a reduced equipment and integration cost. This will open up the introduction into smaller aircraft and helicopters. One trend breaking solution is the newly developed Saab Head-Up Display (HUD) named RIGS.
Brandtberg, HansZanden, Johan
Design and Flight Test of a Primary Flight Display Combined Vision System2011-01-252510/18/2011
A series of flight tests were conducted to design and evaluate a Combined Vision System (CVS) that integrates a forward looking infrared video image with synthetic vision on a primary flight display. System features included colorizing the video image to mesh with the synthetic terrain background, decluttering the approach symbology to facilitate the detection of the approach lights and runway markings, creating a semi-transparent IR sky to ensure continuous situational awareness of the surrounding terrain, and annunciating the decision height to facilitate the transition to the actual runway environment. Over 100 approaches were flown during three flight test sessions. For the first flight test session pilots reviewed early CVS proofs of concept on Honeywell's Citation Sovereign. During the approach in low visibility conditions, the Pilot Flying remained head-down to 100 ft AGL, at which time he lifted his head and made a subjective judgment of whether he could easily and safely complete the transition to land before making a go-around. In the second flight test session enhancements included IR image coloring, IRS/GPS navigation system integration, and display annunciations. The series of flight tests culminated in a CVS integration on Honeywell's Gulfstream G450 aircraft for a direct head-up display (HUD) versus head-down display (HDD) comparison of the IR imagery. The HUD location is currently the standard for low visibility approaches with IR imagery. The G450 evaluation had three highly experienced pilots with an average of over 12,000 flight hours and over 2,500 hours with a HUD. They flew a total of 46 approaches, most to full-stop landings and many were in high workload conditions - low visibility weather or strong crosswinds. Again the Pilot Flying stayed head-down to 100 ft AGL and then transitioned to the outside view of actual runway environment before landing. Pilot performance with the CVS was equivalent to performance with the HUD on all flight parameters including glideslope deviation, airspeed deviation, configuration to land at the crossing threshold, and the landing footprint on the runway.Workload scores and display ratings were equivalent between the two displays, giving a strong indication that the Honeywell CVS provides equivalent performance and an alternative means to the HUD for displaying the IR imagery.
Ververs, Patricia MayHe, GangSuddreth, JohnOdgers, RobEngels, JaryWyatt, IvanHughes, KeithHamblin, ChristopherFeyereisen, Thea
Panoramic Displays: The Next Generation of Fighter Aircraft Cockpits2011-01-252610/18/2011
Since about 10 years the trend in aviation cockpit design is toward an increasing display area and a smaller number of individual displays at the same time. Modern display technology even allows building displays which are able to cover the area of the entire main instrument panel of a fighter cockpit. The application of large area displays offers the advantage to largely improve the situation of the pilot by augmenting his situation awareness, thus enhancing his operational capability. A display that provides a large display area (panoramic display) could not only be used to show a bigger amount of information but also to indicate this information in a more detailed manner at the same time and it also offers the chance to combine information thus supporting the generation of a mental model of the situation. The introduction of a panoramic display in an aircraft cockpit, however, has to be initiated by conceptual work aiming to find the optimum way to both utilise the large display area and interact with the device. We therefore developed a display and control concept for the panoramic display and began to investigate the potential benefits of such a big screen. Our work comprises the evaluation of the pilot's situation awareness and workload in an operative simulation environment, considering his needs and situational impacts. In that context we explored potential ways to interact with such a display in order to identify the most promising control method(s). The present report summarises our conceptual work on panoramic displays, the methodology we applied and the results of the usability study on interaction methods. It describes also our way ahead regarding the measurement of situation awareness. Further studies shall prove that panoramic displays can in fact contribute to improve the performance of the entire system by supporting the pilot's process to build a proper mental model of the situation.
Kellerer, JohannesMöller, ChristophKostka, AlexanderNeujahr, HaraldSandl, Peter
Heads-Out Information Solutions for Small Aircraft2009-01-310911/10/2009
Small aircraft have an increased need for presentation of pilot information heads-out. Heads-out means that the information is projected and overlaid the outside world enabling the pilot to receive information and images from the avionics system at the same time as he can look out of the windows. Heads-out presentation is accomplished by an optical head-up or head-worn display device. Driving factors for heads-out presentation are improved landing credits to be able to land at the airport of destination also during adverse weather conditions, improved safety due to better situation awareness and operating cost savings. New technologies giving compact and more affordable head-up displays (HUD) are now availble and installation in small fixed wing aircraft (e.g. business jets) and helicopters is feasible. Saab has developed a new head-up display named RIGS, which provides pilots with information linked to flight and navigation. RIGS gives all-weather capability with improved landing credits, ideal for flying and landing aircraft in challenging conditions by presenting instrument landing system information and images from Enhanced Vision Sensors. Today's EVS technology connected to RIGS enables pilots to see through darkness, smog and various levels of snow, rain and fog. The system will significantly improve safety during taxiing and landing through early detection of runway incursions and improved awareness of the terrain. Other information such as sighting symbology in military applications and Synthetic Vision Systems (SVS) images can be included and presented heads-out.
Brandtberg, HansZandén, Johan
HUMAN ENGINEERING RECOMMENDATIONS FOR DATA LINK SYSTEMSARP4791A (Historical)2/16/2008
This document sets forth general, functional, procedural, and design criteria and recommendations concerning human engineering of data link systems. The recommendations are based on limited evidence from empirical and analytic studies of simulated data link communication, and on experience from operational tests and actual use of data link. However, because data are not yet available to support recommendations on all potentially critical human engineering issues these recommendations necessarily go beyond the data link research and include requirements based on related research and human factors engineering practice. It is also recognized that evolution of these recommendations will be appropriate as experience with data link accumulates and new applications are implemented. This document focuses primarily on recommendations for data link communications between an air traffic specialist and a pilot, i.e., air traffic services communications, although some recommendations address use of data link for flight information services. Unless otherwise specified within the text, all recommendations apply to both flight deck and ground-based data link systems. This document is intended as a guide for development and evaluation of data link systems. Human engineering considerations are an important element of data link system performance. As illustrated in Figure 1, human engineering recommendations address many component functions required for effective data link communication services in the operational environment. For presentation purposes, the recommendations are divided into five sections: General, functional, procedures, flight deck/air traffic service (ATS) workstation integration, and human-computer interface. To facilitate understanding and use of this document appropriate cross-references to interrelated recommendations appear in parentheses throughout the text.
G-10 Executive Advisory Group
The scope of this document is limited to descriptions of the display characteristics of the Flight Dynamics, Inc. (FDI) Model 1000WS Head up Guidance System (HGS) as installed on the Boeing 727 airplane and certified by the Federal Aviation Administration for use in Category III landing operations. The symbology depicted in this document is referenced to the particular pilot task(s) for which it was designed. Also included are descriptions of operational features of the particular symbol along with any associated criteria regarding symbology constraints, source data, or position error.
G-10 Aerospace Behavioral Engineering Technology
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