pulsed efficiency
21Radar signal characteristics — A Radar System uses a Radio Frequency electromagnetic signal reflected from a target to determine information about that target. In any radar system, the signal transmitted and received will exhibit many of the characteristics described below.The …
22Magnetoplasmadynamic thruster — An MPD thruster during test firing The Magnetoplasmadynamic (MPD) thruster (MPDT) is a form of electrically powered spacecraft propulsion which uses the Lorentz force (a force resulting from the interaction between a magnetic field and an… …
23Laser cutting — process on a sheet of steel. CAD (top) and stainless steel laser cut part (bottom) Laser cutting is a technology that uses a laser to cut materials, an …
24Jean-Pierre Petit — (b. 5 April 1937) is a French scientist, senior researcher at National Center for Scientific Research (CNRS), now retired. His main working fields are fluid mechanics, kinetic theory of gases, plasma physics, magnetohydrodynamics power generation …
25Yttrium aluminium garnet — YAG redirects here. For the IATA airport code see Fort Frances Municipal Airport. For the YMCA sponsored program see YMCA Youth and Government. Yttrium aluminium garnet General Category synthetic mineral Chemical formula Y3Al …
26Muon spin spectroscopy — is an experimental technique based on the implantation of spin polarized muons in matter and on the detection of the influence of the atomic, molecular or crystalline surroundings on their spin motion. The motion of the muon spin is due to the… …
27Flywheel energy storage — NASA G2 flywheel Flywheel energy storage (FES) works by accelerating a rotor (flywheel) to a very high speed and maintaining the energy in the system as rotational energy. When energy is extracted from the system, the flywheel s rotational speed… …
28Light-emitting diode — LED redirects here. For other uses, see LED (disambiguation). Light emitting diode Red, pure green and blue LEDs of the 5mm diffused type Type Passive, optoelectronic Working principle Electr …
29Rocket — This article is about vehicles powered by rocket engines. For other uses, see Rocket (disambiguation). A Soyuz U, at Baikonur Site 1/5 A rocket is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engi …
30Stirling engine — Alpha type Stirling engine. There are two cylinders. The expansion cylinder (red) is maintained at a high temperature while the compression cylinder (blue) is cooled. The passage between the two cylinders contains the regenerator …
