Aerospace & Defense
Normandy Park, Washington
May 19, 2017
Inexpensive, Simple and Safe System to Prevent Aircraft Fuel-tank Explosion
Since 1990, three aircraft, manufactured in USA, have exploded due to combustion in the fuel-tank. In 1996, Trans World Airways (TWA) Flight 800 explosion caused 230 deaths. National Transport Safety Board (NTSB) listed “Explosive Mixture in Fuel Tanks in Transport Category Aircrafts” as Item 1 to its Most Wanted Transportation Safety list in 1997. The Federal Aviation Administration (FAA) amended its regulation 14CFR25.981 on July 21, 2008. The regulations do not mandate the use of any particular system type. The industry has selected fuel tank nitrogen inerting system (FTIS) ...
Hybrid Remotely-operated underwater vehicle (H-ROV) is a robot that completes functions underwater on behalf of a crew, located on the surface, with whom the H-ROV is tethered. These functions include: search/recover, inspection, equipment repair, scientific analysis, dredging/trenching, cable-laying, and surveying.
H-ROV is designed to work at desirable depth. It is steered by turning a rudder left and right and it adjust the altitude under the water by tilting the elevators. Water- pushing and creating a forward force is done by a propeller. A power source is engaged on this action with transmitter and receiver of 6 channel. It has ...
An aircraft tire with airfoils, or an airfoil texture, molded into the sidewall. The idea being that when the tire is exposed to the air stream the airfoil feature would create a lift force that causes the tire to rotate. By creating this feature on a tire, retrofitting existing aircraft would only mean replacing the ...
May 15, 2017
Self-Healing Alternator Control for Light Aircraft
Aircraft today are loaded with electronics. So having electrical power available is critical for safe flight. The sole device for producing this power is the aircraft’s alternator. Unfortunately, the present state-of-the-art for controlling it is not totally reliable. So a unique method has been developed to improve this.
The Self-Healing Alternator Control has four stages located between the control switch and the alternator itself: (see schematic)
1. A Toggling Relay.
2. Redundant Voltage Regulators.
3. Redundant Field Wires.
4. Switching Diodes.
The control process begins when the pilot closes a switch ...
The report deals with the concept of using flapping wing as a mode of flight for light unmanned aerial vehicles. Using biomimetics, the study of a bird flight is made followed by the design proposal which mimics this bird flight mechanism. A detailed calculation is then made for calculating lift and thrust produced by a single wing including the benefits of diffuser lift provided by the unique wing design. Finally, the kinematic, aerodynamic and dynamic equations of motion are derived for the rear flapper.
Another means of reducing the negative lift generated during the upward stroke is by making ...
Military tracked vehicles are deployed in severe environmental and loading conditions during Military operations. The space availability and high heat rejection sources makes the cooling system design a challenging task by offering little margin in design parameters. This paper presents prime aspects of the design methodology i.e. packaging of cooling system aggregates in available space, optimizing air flow, numerical simulation and also the evaluation of cooling system performance on a test bench in simulated vehicle conditions and during field trials. During preliminary design stage virtual prototyping approach was adopted which helped to make critical decisions earlier in the development ...
This idea is inspired by MIT's small jumping robot cubes and the decades old technology used to orientate satellites in orbit.
Reaction wheels (flywheels) rotate at high angular velocities and then are made to stop using one of the four electromagnetic brakes transferring angular momentum into the body of the frame. Once the energy from the flywheel has dissipated the flywheel starts to spin again until it reaches maximum rotation and is ready once again for action.
When the brake is activated the frame gets jolted forward slightly but with a slight curve towards the centre of ...
Cedar Rapids, Iowa
May 1, 2017
As the airplane cockpit evolves, additional methods of Human Machine Interface (HMI) are desired. Examples of this include: the use of multi-touch swipe gesture for Primary Flight Display (PFD) screen transfer, allowing the Pilot to perform mode and menu selections via touch, pinch/zoom map range selection, touch and drag Navigation Display (ND) flight planning, the use of voice commands, providing secondary / audible feedback for touch gestures, Artificial Intelligence (AI) event-triggered safety monitoring, integration of 3D cameras or Google glass, biometric monitoring, etc. etc.
Current aircraft architectures were not built with this type of HMI functionality in mind and therefore ...
Stykfit7 is a security screw with a novel drive configuration of 7 lobes and a large center rejection pin. These two features make insertion and removal only possible with the matching keyed driver. it is patented. All other security screws are out of patent protection and have millions of driver bits in circulation, found commonly at retail. Stykfit7 is further novel in that the bit and driver grip each other positively. This allows the driver both hold the screw precisely and direct it towards its assembly point hands free. The bond is so strong it holds under rotation and ...
Imagine a new airliner design that has slower, safer take off and approach speeds yet can fly at Mach .95 with little drag. Imagine an airliner that takes the engines away from the wings and places them out of the way of bird strikes at the tail of an advanced airfoil body. Imagine a plane that can carry twice the load yet get the same fuel economy as others with 1/2 this load. Now imagine your airfare actually going down.
Not possible? Actually, the design has been around since the early 60's jet age. Propeller designs go back even further. ...