Aerospace & Defense

Currently, there is a problem getting small satellites into space. If you do not have millions of dollars and years to spare, but want to do something with the "common heritage of mankind" above our heads, you have to build a small, cheap satellite. But rockets today do not take small satellites to orbit: they take big.

There are no commercially available rockets today with a payload of less than 100 kilograms. The smallest of those now under serious development (except ours) only go down to around 50. By contrast, the dominant small satellite standard is the CubeSat, massing 1-5 kilograms. Their only ways to orbit are hitching a ride with a large payload (the "truck" model) or gathering ...

The development of an Ornithopter is inspired by a need of intelligent surveillance robots, capable of subtly infiltrating restrained spaces and maneuvering in them without any human assistance, just by using the controllers. The ornithopter has an appearance of a flying bird and it mimics the bird in its flight. The flapping action of the wings of an ornithopter is obtained from the governing mechanisms. The smooth flight of any flapping wing vehicle depends upon the flap angle and its frequency. The problem that most of the pre-existing governing mechanisms for ornithopter are facing according to the literature survey is low flap angle of the mechanism. This project mainly focuses on designing the new mechanism in order to overcome ...

The entry presents the aerodynamic design, mechanical design and prototyping of a unique unmanned aerial platform. This platform is being developed in response to a perceived requirement for a more flexible surveillance and remote sensing platform than is currently available. Missions for such a platform include coastal surveillance, intelligence gathering by law enforcement agencies and environmental monitoring.

The design of the proposed platform consists of an electric powered quad tilt-rotor UAV that is capable of vertical takeoff and landing (VTOL) like a helicopter and long duration horizontal flight like an airplane. An optimal design procedure is conducted to satisfy a set of pre-determined requirements, which will ensure a competitive aerial platform performing primarily intelligence, surveillance and reconnaissance missions in ...

This project presents the development of an assessment module movement patterns used by unmanned surface vehicles – USVs, to provide support for naval operations. Also, it presents a methodology that integrates an Operational Situation (OPSIT) in order to evaluate different patterns and sensors used by these kind of vehicles to achieve an Anti-Submarine (ASW) mission.

This OPSIT, consists of probabilistic models and at the same time in physical and technical features of vehicles and their components. It is designed and programmed an algorithm simulation tools, Matlab and LabVIEW® where these models are integrated in order to evaluate and get results.

Subsequently the different constraints of the models are identified and formulates a design of experiments to establish ...

A Twin shrouded manned aerial vehicle has been fabricated from the combination of springtail and martin jetpacks. This made the system more advanced and controls feasible. The dynamic flight model, which can be run in real time, includes the reactions from ducted-fans, aircraft body aerodynamics, control surfaces, gyration and landing gear interactions Experiments were designed to validate assumptions used in development of model equations, the result of the experiments gave good advantage in designing and building of the Aerial vehicle, this avoided scaling issues that where encountered while the manufacturing of a manned Aerial vehicle.

The main purpose of this system is for both commercial and military under surveillance category, as this system is made of basic parts, which ...

Problem Statement:
NASA currently is working on their Highway in the Sky software to designate roads in the sky. The software appears to be missing one piece of the puzzle that is critical to it's success. The problem is that in the event of a crash scenario, due to engine failure or other failure, where would a personal aircraft land and what would be the best path for a successful landing. The reason this is a problem would be the fact that personal aircraft would tend to fly at a lower altitude than a commercial aircraft, which means there would be less time to react to an emergency situation.

Solution Statement:
Add a new module to the ...

The double layer chamber was designed to provide an industrial solution to chemical processes when preserving tough technical standards is a must in order to keep the contained fluid (most of them are new biofuels) free of undesired stain and contaminants which sometimes are generated inside the tanks that are used at nowadays industry.

As an innovative example, Bioethanol combustions cells are the kind of processes that may take advantage of this development. These cells needs pure bioethanol to work properly but the problem is that even the commercialized bio ethanol is not pure and so a filtering pre-process is needed before the fuel is driving to a stainless steel tank. Once inside the tank and due ...

EAML System (Employing Air Molecules as Lenses);
To Enhance Laser Beams in Laser Weapons against
Terrorists Attacks:

Bubbles in a kettle of boiling water, droplets on a sweaty room window
and dew droplets on leaves and flowers, all of them, can act as natural
lenses; those droplets can magnify the objects of their environments.
So, the above facts are the main roots of a new idea that may come
into mind immediately after observing all of those facts;
employing air molecules as tiny natural lenses to enhance and
modify the laser beams in the air, to overcome the problem of using
lens in the laser weapons and laser beams focusing in the air against

This project proposes an improved Green Taxiing system focused around the landing gear. Because single-aisle aircraft should represent 70% of the deliveries over the next 20 years, a typical 200-passenger aircraft, similar to the Airbus A320 or the Boeing 737, flying a two-hour mission is chosen as the baseline for the sizing process.

This electric and autonomous taxiing system is designed with 200kg induction motors with a power of 90kW and a variator ratio of 20. These motors power the wheels hence enabling the aircraft to taxi without its main engines. They also avoid the use of tugs normally required for the pushback phase. The motor identified as optimum is close to the one developed and prototyped by Safran ...

Efficient propulsion for a stratospheric aerial relay aircraft (SARA) is described from the perspective of prior art. Aircraft such as the E-11A, EQ-4B, Grob Stratos 2C, Egrett G520, U2, and WB-57 are stratospheric cruisers with endurance from 7-32 hours. The E-11A cruises at Mach 0.8, and the Egrett at Mach 0.4. The Egrett cruises at 1/20th the fuel of the E-11A and can remain high on the horizon of ground nodes for just as long. The unique properties of the Egrett and Grob Stratos are: Large wing and large propeller (3 and 6 meters, respectively). The objective of the Propulsion for a SARA High Altitude Long Endurance (HALE) aircraft is to increase the propeller size to even larger size ...

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