2013
Aerospace & Defense

Since the 1950’s the state-of-the-art for transport aircraft design has been the extendable ‘tube’ that transfers strength and rigidity through the external skin. This design includes a passenger compartment with its ‘overhead bins’ and a floor under which cargo and utility equipment ride. This design requires that specially trained baggage handlers load and unload the cargo-hold while ‘specially’ trained passengers load and unload the overhead bins. This process is time consuming and therefore expensive and includes a certain innate level of passenger dissatisfaction due to abusive and oblivious travelers.

The ‘tube’ design was necessitated by strength and weight requirements that no longer dominate aircraft design. The Secure, Known-Yield, Cargo Access Pallet (SKYCAP) system is a projection of applied modern ...

The SM-39 is a next generation air superiority fighter and fighter-bomber. Designed to perform the missions of the F-22, F-15, F/A-18E/F and the now retired F-14 Tomcat and A-6 Intruder, the SM-39 is a twin engine, piloted or unpiloted autonomous, low observable aircraft. With two internal weapon bays, a variable dihedral empennage, double slotted flaps with boundary layer blowing, thrust vectoring nozzles and titanium foam metal sandwich construction, the SM-39 is a sixth to seventh generation fighter and a direct bridge between atmospheric aircraft and future reusable space fighters.

Of radical planform, the SM-39 is a triple fuselage design featuring a streamlined center, high fineness ratio primary fuselage accompanied laterally by right and left mounted secondary fuselages. The secondary ...

The basic idea is upon landing to start the rotation of the airplane wheels before contact with the ground.

Courrently at the moment of the first contact with the ground, the wheels skid generating smoke and reducing the life of the tires because the wheel speed is above cero in relation to the ground.

Also the skidding increases the run length before stop because the coefficient of kinetic friction aplies which is much lower that the static one.

To start the rotation of the wheels a couple of alternatives can be studied:
- a very small electric motor located in each wheel

- a very small wind propler atached to each wheel

Very little energy is required to start ...

This idea makes use of Adaptive Neural-Network Predictive Controllers (ANNPC) in conjunction with GPS signals to control the orbit and attitude of any type of Earth-orbiting spacecraft. The simulation models we have developed demonstrate that one can implement an orbital control system for spacecraft by combining ANNPC with input state vectors generated from GPS signals received on board. The key advantage of using ANNPC is that it does not require highly accurate and costly dynamic models for specific spacecraft to enable orbital and attitude prediction and control for every new spacecraft design. Instead, a generic ANNPC algorithm can be developed and trained to learn the orbital and AOCS dynamics of spacecraft during their preoperational and operational phases. The simulations ...

This Spinal Injury Protector for fighter aircraft ejection seats is meant for the protection of fighter pilot (usually military) from serious spinal injury during an emergency evacuation. This Spinal Injury protector is a portable light-weight and ready to use add-on seat bottom assembly suitable to fit all ejection seats.

Why this Spinal Injuries Protector is developed? In fighter aircraft, an ejection seat is a system designed to rescue the pilot in an emergency. In most designs, the seat is catapult out of the aircraft and propelled by an explosive charge or rocket motor. During an emergency evacuation the pilot ejects himself from the aircraft and the seat is catapult 5 to 20g upward carrying the pilot with it within ...

Hydrodynamically speaking, screw propellers of conventional marine propulsions represent vortex systems rotating in transverse to the flow plane that generates periodic impulses of pressure in water and this way create underwater acoustic field being used for detection and identification of ships.

Intensity of the underwater acoustic field (hydrophone noise) is the key parameter that determines survivability of a ship and her ability to accomplish her mission, and, finally, outcome of marine warfare. So, reduction or, better, elimination of periodic impulses produced by naval propulsion systems represents a vital problem of modern combat ships and, especially, submarines.

The new propulsion system doesn't employ the idea of rotating vortices. Instead it produces an array of distributed stationary vortices and, so, doesn't ...

The submersible speedboat can be carried assembled by road, rail or ship. The small size, high speed, the use of the water jet, low acoustic, electric, hydrodynamic, thermal and magnetic footprint, the silent planned displacement, with the propulsion system off and consecutive surfacing / diving, allows to act in a "noisy" environment, avoiding the need countermeasures. Fins, used as a shield, with inflatable tanks,allowing torpedo shots at very close targets.The thrust vectoring nozzle allows easy and precise boat handling in horizontal and vertical level, eliminating the bow and stern rudders. Because of low rate of positive buoyancy- with deflated elastic tanks- allows the rapid surfacing / diving and underwater navigation only on hydrodynamics. Moving accumulators, inflatable tanks on the ...

This invention involves controlling the unwanted acoustic noise inherent in a highly concentrated flame by modulating an electric arc embedded in the flame. The purpose of the arc is to generate an inverse modulated signal, which will inhibit the unwanted noise, generated by the combustion gases in the flame.

The "light characteristics" of the flame visible to the naked eye or not, activate a photo detector. The signal from the photodetector is electronically inverted and amplified to modulate a current regulated tungsten arc within the flame whose acoustical waveform cancels the noise output of the flame.

This system can be retrofitted onto existing jet engines or built into newly conceived engines without interfering in the engines performance. ...

The Innovation
Launch vehicle rocket engines must operate from sea level to near-vacuum conditions. They require high thrust at takeoff when the vehicle is heaviest. As the vehicle ascends to space it requires a high specific impulse (Isp) to minimize the propellant consumption. These requirements are in conflict. Aerojet has patented an Afterburning Rocket Engine (ABRE) that provides both high thrust at lift off and high Isp in space. Figure 1 shows the ABRE concept. Combustion of additional propellants in the nozzle increases the pressure in the nozzle and thrust significantly. The higher pressure in the nozzle allows a larger nozzle area ratio which increases the vacuum Isp.
Aerojet has tested the ABRE engine in 2005. Figure 2 ...

The idea of reaching up to the heavens has captivated several generations. For this challenge, rockets have shown to be extremely inefficient, and the idea of constructing a “Centrifugally Extended Carbon Nano-Tube Tether Space Elevator” (CECNTTSE) presents unsolved technological challenges. We conclude that; to efficiently achieve the goal of unrestricted movement away from Earth’s gravitational pull, both the use of the current state of the art and the proposed method for a Space Elevator should be reinvented.

For this reason, we propose the “Buoyant Advanced Building Elevator Lightweight” (BA-BEL) Tower, a new concept of ”a floating tower” that will be capable of reaching up to the Karman Line and beyond, while providing the structural support to a sub-orbital elevator ...

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