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Astronaut training describes the complex process of preparing astronauts in regions around the world for their space missions before, during and after the flight, which includes medical tests, [2] physical training, [3] extra-vehicular activity (EVA) training, wilderness survival training , water survival training , robotics training ...
Once the aircraft completes 360° of roll at ¼ turn, repeat step 2. three more times to complete the entire rolling circle. Neutralize aileron, elevator, and rudder gradually as the rolling circle completes. Below is a graph that illustrates the elevator and rudder input as a function of rolling position during one turn quadrant.
Radio control (often abbreviated to RC) is the use of control signals transmitted by radio to remotely operate a device. Examples of simple radio control systems are garage door openers and keyless entry systems for vehicles, in which a small handheld radio transmitter unlocks or opens doors. Radio control is also used for control of model ...
Sergei Krikalev. Sergei Konstantinovich Krikalev ( Russian: Сергей Константинович Крикалёв, also transliterated as Sergei Krikalyov; born 27 August 1958) is a Russian mechanical engineer and former cosmonaut and head of the Yuri Gagarin Cosmonaut Training Center . As a prominent rocket scientist, he is a veteran of ...
Astrodynamics. Orbital mechanics or astrodynamics is the application of ballistics and celestial mechanics to the practical problems concerning the motion of rockets, satellites, and other spacecraft. The motion of these objects is usually calculated from Newton's laws of motion and the law of universal gravitation.
Primary life support system. A primary (or portable or personal) life support system (or subsystem) ( PLSS ), is a device connected to an astronaut or cosmonaut's spacesuit, which allows extra-vehicular activity with maximum freedom, independent of a spacecraft's life support system. A PLSS is generally worn like a backpack.
Astronaut Doug Wheelock operating ham radio from the ISS. Amateur Radio on the International Space Station ( ARISS ), operating in the Amateur-satellite service, is a project sponsored by various entities and carried out by astronauts and cosmonauts on the International Space Station who also have an amateur radio license .
A trunked radio system is a two-way radio system that uses a control channel to automatically assign frequency channels to groups of user radios. In a traditional half-duplex land mobile radio system a group of users (a talkgroup) with mobile and portable two-way radios communicate over a single shared radio channel, with one user at a time ...