Browse Topic: Gliders

Items (14)

MOMENTUM: SEPTEMBER 2019

19MOMP0909/01/2019

The car is the star at Formula SAE 2019 saw more Formula SAE competitions, more cars, more teams…and more victories. Air mission Introduction of autonomous gliders were among the changes implemented for SAE Aero Design 2019. Baja believers The battle for the Baja SAE season championship went down to the wire, as usual. Competition comes to Mcity University of Toronto repeats as winner in the second year of the AutoDrive Challenge.

Unmanned Ocean Drone

TBMG-21188

12/01/2014

Liquid Robotics Sunnyvale, CA 408-636-4200

Reducing Light Duty Vehicle Fuel Consumption and Greenhouse Gas Emissions: The Combined Potential of Hybrid Technology and Behavioral Adaptation

2013-01-128204/08/2013

When comparing the potential of advanced versus conventional powertrains, a traditional approach is to hold glider design constant and simulate “comparable performance” to a conventional vehicle (CV). However, manufacturers have developed hybrid electric vehicle (HEV), plug-in hybrid electric vehicle (PHEV), and all-electric vehicle (EV) powertrains in gliders designed to synergistically enhance fuel saving benefits of such powertrains by further reducing road load and engine output power (or continuous power for the EV) where no conventional powertrain option is provided. In the U.S. marketplace, there are now several examples of both hybrid and plug-in hybrid electric vehicles using gliders common to top selling CVs and a few using low load gliders to further reduce fuel consumption. We use fuel consumption estimates from FuelEconomy.gov for a number of plausible CV versus HEV, PHEV, and EV comparisons to estimate the potential additional annual fuel savings and greenhouse gas (GHG

Santini, Danilo, Burnham, Andrew

Losing weight with lost foam casting

11OFHD0728_0107/28/2011

Equipment made with lightweight materials can improve fuel consumption and increase available payload capacity. There are a variety of design techniques to achieve lightweight vehicles. One option that has been widely used is materials selection and the choice of less dense materials such as aluminum, magnesium alloys, or composites. There are several drawbacks to these material options including reduced material strength, ductility, and stiffness as well as higher cost. Another option involves using ferrous materials under innovative processing conditions. When both the weight and cost per unit of strength are considered, ductile iron, also known as nodular iron, is a very attractive material to consider. While denser than aluminum, ductile iron's higher strength can result in weight reduction by allowing thinner section size.

Variable-Structure Control of a Model Glider Airplane

TBMG-295307/01/2008

A variable-structure control system designed to enable a fuselage-heavy airplane to recover from spin has been demonstrated in a hand-launched, instrumented model glider airplane (see figure). It has long been known that the most effective spin recovery technique for fuselage- heavy aircraft involves the use of ailerons to roll the airplane into the spin. This technique might be considered counter-intuitive because the pro-spin aileron deflection tends to initially increase the roll-rate component of the angular momentum of the airplane. However, it restores some controllability, enabling the pilot to perform subsequent maneuvers to pull out of the spin. The design of the present model-airplane control system was inspired in part by recognition that the aforementioned (and conventional) spin-recovery technique mimics a variable-structure control law.

Surface-Launched Explorers for Reconnaissance/Scouting

TBMG-584604/01/2002

Small, instrumented, expendable robotic aircraft and projectiles have been proposed for use in scouting for targeted new sites by providing closeup images with ~10-cm resolution, covering large distances ~1 to 10 km quickly and allowing reconnaissance to enable sample return. Denoted microflyers or surface-launched explorers (SLEs), the proposed robotic aircraft and projectiles were conceived especially for use in the exploration of Mars and possibly other distant planets. SLEs could also be adapted to such terrestrial uses as military reconnaissance, exploration of hostile terrain (e.g., volcanoes, steep cliffs, or glaciers), surveying hazardous-waste sites, and searching for victims of earthquakes.

A Review of the Severe Lightning Threat

2001-01-288809/11/2001

The CAA has previously initiated and funded research to assess the lightning threat to helicopters operating in the North Sea. One of the conclusions of this research is that lightning strikes to helicopters operating in the North Sea are more likely to involve positive polarity cloud-to-ground strikes which generally have a higher action integral than the typical negative polarity cloud-to-ground strikes. The UK-CAA is also familiar with a lightning accident to a glider North of London in 1999. One of the conclusions of the investigation into this accident was that the glider had been struck by a lightning strike with a considerably greater action integral than the present certification test threat level. EUROCAE WG31 and SAE Committee AE2 have reviewed the above data and other incident/accident reports. The available data on the severe threat is considered limited, the committees therefore requested that further evidence be presented. The EUROCAE WG31 Committee therefore took an

Tudor, Dave

Biomorphic Gliders

TBMG-731204/01/2001

Biomorphic gliders are small robotic microflyers proposed for use in scientific exploration of planetary atmospheres and terrains that capture some key features of insect and bird flight. Biomorphic gliders as biomorphic flight systems are a subset of biomorphic explorers. The multidisciplinary system concept of "Biomorphic Explorers" represents small, dedicated, low-cost explorers that possess some of the key features of biological systems, not easily captured by conventional robotic systems. Such features particularly include versatile mobility, adaptive controls, bioinspired sensor mechanisms, biomorphic sensor fusion, biomorphic communications, biomorphic cooperative behavior, distributed operations, and biomorphic energy generation/conversion. Significant scientific and technological payoff at a low cost is realizable by using the potential offered by a large number of such cooperatively operating biomorphic explorer units in concert with the traditional exploration platforms such

Studies On A Helical Magnetic Flux Compression Generator

2000-01-361710/31/2000

The basic performance of a simple helical flux compression generator, driven by 200 g of high explosives, has been studied with current-voltage measurements and optical diagnostics. Emphasis has been put on the characterization of physical effects that limit the generator output with respect to, for instance, maximum achievable output current. Simulation of the electric current output with the commercial circuit simulator PSPICE shows that this generator exhibits an instantaneous flux loss of about 20 % in the low current mode. Based on dynamic magnetic field probe measurements, the complexity of the generator's magnetic field structure is briefly discussed.

Neuber, A., Dickens, J., Giesselmann, M., Kristiansen, M., Freeman, B., Dorsey, D., Worsey, P., Baird, J., Schmidt, M.

Personal Cabin Pressure Alarm

TBMG-696210/01/2000

Compact instruments, similar in appearance to common personal pagers, have been proposed for warning aircraft crewmembers that cabin air pressure has decreased to a potentially dangerous level. An instrument of this type, called a "personal cabin pressure monitor and warning system" (PCPMWS), implements a warning protocol consistent with Federal Aviation Administration (FAA) requirements for commercial flight crews to (1) use supplemental oxygen after a 30-minute exposure to a cabin pressure altitude between 10,000 and 12,000 ft (about 3,050 and 3,660 m), or (2) immediately when the cabin pressure altitude exceeds 12,000 ft. The PCPMWS would provide both 10,000- and 12,000-ft warnings. The elapsed time between these two warning altitudes could also serve as an indication of the rate of decompression, and thus of the urgency of the situation.

AS6393 Knob (Glider Release Control)

AS6393-2 (Current)05/22/1956

No scope available.

Engine and Airframe Technical Standards Committee (TSC)

AS3194 Knob (Glider Release Control)

AS3194-3 (Current)12/12/1949

No scope available.

Engine and Airframe Technical Standards Committee (TSC)

AIR PICK-UP AND GLIDERS AS RELATED TO FUTURE OF AIR CARGO

42005101/01/1942

du Pont, Richard C.

GLIDERS FOR TRANSPORT

42005201/01/1942

Barringer, Lewin B.

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