Echo 1

Mission

Echo 1

• Type: Communications
• Orbit: Elliptical Orbit
• Launch Cost: $7,270,000

The Echo 1A spacecraft was a 30.48 m diameter balloon of mylar polyester film 0.0127 mm thick. The spacecraft was designed as a passive communications reflector for transcontinental and intercontinental telephone (voice), radio, and television signals. It had 107.9 MHz beacon transmitters for telemetry purposes. These transmitters were powered by five nickel-cadmium batteries that were charged by 70 solar cells mounted on the balloon. Because of the large area-to-mass ratio of the spacecraft, data for the calculation of atmospheric density and solar pressure could be acquired. The spacecraft was also used to evaluate the technical feasibility of satellite triangulation during the latter portion of its life. Echo 1 failed during the coast period after launch, as the attitude control jets on the second stage failed and the spacecraft did not achieve orbit. Echo 1A was a successful relaunch.

Location

Space Launch Complex 17A

Cape Canaveral, FL, USA

Space Launch Complex 17A has witnessed the launch of 145 rockets, including 145 orbital launch attempts, while Cape Canaveral, FL, USA, has been the site for 967 rocket launches.

Rocket

McDonnell Douglas Thor Delta

American orbital launch vehicle. Commercial name for the military’s Thor-Delta.

Agency

United States Air Force

The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Signal Corps, the USAF was established as a separate branch of the United States Armed Forces in 1947 with the enactment of the National Security Act of 1947.