To fix this, NASA provided the GATV with both optical beacons and a radar transponder. Rather than rely on reflections from a radar set aboard the Gemini, the GATV transponder would transmit a ...

The transponder concept is based on a two-antenna design ensuring a small time delay between reception and re-transmission of the radar signal. Furthermore the complete electronic and both antennas ...

The Army Black Hawk helicopter that collided with an American Eagle flight over the Potomac River late last month was flying ...

Footage of an air traffic radar screen shows the American Airlines flight making a routine landing when the US military Black ...

Senator Ted Cruz shared details about the crash in Washington after a meeting with the Federal Aviation Administration ...