Aerospace & Defense - 2014
United Arab Emirates
Mar 7, 2014
The main aim of this topic is to introduce the concept of reusing the external tank of a space shuttle. To achieve this we are proposing to use Thermal Protection System (TPS) in conjunction with a High Temperature Heat Shield (HTHS). One of the most important and the only non-reusable part of a space shuttle is its External Tank (ET). There is a need to recreate the ET for every new space mission. This is primarily because of the fact that the ET cannot withstand the high temperature during re-entry and hence it breaks up and disintegrates over a ...
With ever tightening budget constraints on the US military, reduction in machinery is inevitable. No branch feels this more than the Navy. Put simply, less money means fewer ships. To be able to execute the same mission profiles without compromising mission standards the remaining ships must become more capable and more flexible. The Ridgeback is able to meet these demands. It is designed to operate in two distinctive modes, as a ground effect vehicle and as a conventional warship.
In mode one, the Ridgeback operates as a ground effect vehicle, allowing the Ridgeback to lift out of the ocean ...
Ruppell Spacetrack is an air floating maglev track for lauching a spaceship. An elevator is used to lift the spaceship to 20 km high above the Earth's surface. A long track accelerating it at 3G is used to give the spaceship enough energy to exit Earth attraction.
Hygrogen ballons and a huge electric fan (not see on the drawing) are used to keep the track in the right position and also act as counterweight during the accelaration phase.
Electric and hydrogen supply are coming from the Earth to keep the hydrogen balloons filled and fan running.
All the cables ...
This idea describes the development of SAROPAN, an all terrain chain belt mechanism robot, wirelessly controlled and automatic (dual mode operation) and camera mechanism for surveillance. It also describes the development of a software interface which allows several open and closed- loop control methods to be easily implemented. The developed hardware and software modules provide for an open and modular system for research purposes. This is demonstrated through the RF wireless control of the robot using Visual Basics 6.0 based software modules. The open loop system inputs implemented are motion control and kinematics via keyboard inputs. The closed-loop control ...
Today's satellite propulsion systems cost upwards of $15MM, were designed before the first handheld calculator was invented, and are impossible to miniaturize to accommodate smaller satellites. Over the past five years, these small satellites have become increasingly capable, but are being launched without propulsion for pointing their antennae or cameras, reorienting themselves in orbit or relative to one another, or deorbiting at the end of their lifetime because of this technological void. The Accion team of MIT PhDs has designed and tested a novel satellite propulsion technology that not only outperforms the large systems in use today for a ...
Fracture of materials often starts from a crack of the nano or micro scale. The Self healing composite produced mends these cracks before they propagate and lead to fracture. The composite is composed of DIglycidal Ether of BIsphenol A ( DGEBA) cured by Triethylene Tetramine (TETA) and microcapsules of TETA encapsulated in a Poly(methyl methacrylate) shell. A crack in this matrix initiates the healing process by rupturing the capsules. TETA flows from the ruptured capsules into the crack by capillary action and polymerizes, thus healing the matrix.
DGEBA is widely used in the aerospace and marine sectors as a ...
Satellite Beach, Fl
Jun 24, 2014
The Self Repairing Space Vehicle is a satellite, space station, human transport vehicle or resupply vehicle that has a self repairing module attached to it. The self repairing module
is a self contained unit. The self repairing module consists of multiple 3D printers. There is one 3D printer for printing metal objects. There is another 3D printer for printing plastic objects. There could be a third 3D printer for printing metallo-plastic objects. Each 3D printer would be provided with a catalog of all the applicable parts that the spacecraft is made of. The 3D printer could be commanded from ...
* Shielded Space Wall Defense System (SSWDS) :
In the huge rush of enemies weapons, suppose that a large numbers of, for example, rockets are launched simultaneously against buildings, establishments and other targets. Simultaneous pointing, tracking and destroying of all rockets are not easily or may not even be possible. But, by applying the SSWDS system, we can make a secured space wall in the air and in front of the rockets' path, as a destroying wall or defense border, and then destroy all of them simultaneously.
So, in SSWDS the light divergence is not a very critical case and ...
East Montpelier, Vt
Apr 14, 2014
At some point in their lives almost everyone has wanted to fly. The draw of the open sky can be very compelling, but for most it is out of reach. Airplanes are expensive and require specialized facilities to operate from. All of this can make it very difficult for someone to experience the joys of flying.
Enter the Skybound 250. Economically priced and freed of the restrictions of an airport this craft can get anyone flying. Designed around the FAA's regulations for ultralight aircraft this airship can carry one pilot and about 80lbs of cargo. Capable of traveling at ...
A Snake's body is very flexible to travel through challenging paths even there are complex obstacles. Snakes uses different methods to do this such as undulatory/serpentine, Side-winding, Caterpillar, Concertina locomotion.
What is Snake Hand?
Snake hand is a lengthy hydraulic robot with a controlling base station. The robot can simulate complex snake motions to travel easily through complex paths. Thee robot is constructed by integrating a number of identical units called Control Segments. The major components of a Control Segment are as follows:
1, Three bidirectional control valves with piston cylinder arrangement as shown in the figure.
2, Universal ...