Exploration Flight Test-1
 Launch of EFT-1 on December 5, 2014 | |
| Names | Orion Flight Test-1 (OFT-1) |
|---|---|
| Mission type | Technology demonstration |
| Operator | NASA |
| COSPAR ID | 2014-077A |
| SATCAT no. | 40329 |
| Website | nasa |
| Mission duration | 4 hours and 24 minutes |
| Orbits completed | 2 |
| Spacecraft properties | |
| Spacecraft | Orion CM-001 |
| Manufacturer | Lockheed Martin |
| Launch mass | 21,000 kg (46,000 lb) |
| Start of mission | |
| Launch date | December 5, 2014, 12:05 UTC (7:05 am EST) |
| Rocket | Delta IV Heavy No. 369 |
| Launch site | Cape Canaveral, SLC-37B |
| Contractor | United Launch Alliance |
| End of mission | |
| Recovered by | USS Anchorage |
| Landing date | December 5, 2014, 16:29 UTC (8:29 am PST) |
| Landing site | Pacific Ocean, 640 mi (1,030 km) SSE of San Diego (23°37′N 114°28′W / 23.61°N 114.46°W) |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Medium Earth orbit |
| Perigee altitude | 115 mi (185 km) |
| Apogee altitude | 3,610 mi (5,809 km) |
| Inclination | 28.8° |
 Mission insignia | |
Exploration Flight Test-1 or EFT-1 (previously known as Orion Flight Test 1 or OFT-1) was a technology demonstration mission and the first flight test of the crew module portion of the Orion spacecraft. Without a crew, it was launched on December 5, 2014, at 12:05 UTC (7:05 am EST, local time at the launch site) by a Delta IV Heavy rocket from Space Launch Complex 37B at the Cape Canaveral Air Force Station.
The mission was a four-hour, two-orbit test of the Orion crew module featuring a high apogee on the second orbit and concluding with a high-energy reentry at around 20,000 miles per hour (32,000 km/h). This mission design corresponds to the AS-201 and AS-202 missions of 1966, which validated the flight control system and heat shield of the Apollo command and service module at re-entry conditions planned for the return from lunar missions.