W
MeteorWayne":3s1xvkg8 said:ROFL, if they were a collision detection system, by the time it was detected, the ISS would be hit.
Get real!!!!
duluthdave":ohm91o8f said:This one caught my interest, so I did a bit of research. As best I can tell, that's the UHF antenna installed on the Destiny module during STS-100. The antenna is used for communication during spacewalks and for station-shuttle communications.
http://www.shuttlepresskit.com/STS-100/eva14.htm
http://www.spaceref.com/iss/element.drawings.html
Uses
TWTAs are commonly used as amplifiers in satellite transponders, where the input signal is very weak and the output needs to be high power.
A TWTA whose output drives an antenna is a type of transmitter. TWTA transmitters are used extensively in radar, particularly in airborne fire-control radar systems, and in electronic warfare and self-protection systems. In these types of applications, a control grid is typically introduced between the TWT's electron gun and slow-wave structure to allow pulsed operation. The circuit that drives the control grid is usually referred to as a grid modulator.
Another major use of TWTAs is for the electromagnetic compatibility (EMC) testing industry for immunity testing of electronic devices.
duluthdave":1ywnvkps said:This one caught my interest, so I did a bit of research. As best I can tell, that's the UHF antenna installed on the Destiny module during STS-100. The antenna is used for communication during spacewalks and for station-shuttle communications.
http://www.shuttlepresskit.com/STS-100/eva14.htm
http://www.spaceref.com/iss/element.drawings.html