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Mission type | Demonstration |
---|---|
Operator | Air Force Space Command |
COSPAR ID | 2012-071A |
SATCAT no. | 39025 |
Mission duration | 1 year, 10 months and 6 days |
Spacecraft properties | |
Spacecraft type | Boeing X-37B |
Manufacturer | Boeing |
Launch mass | 5,400 kg (11,900 lb) [1] |
Power | Deployable solar array, batteries [1] |
Start of mission | |
Launch date | 11 December 2012, 18:03 UTC[2] |
Rocket | Atlas V 501 |
Launch site | Cape Canaveral SLC-41 |
Contractor | United Launch Alliance |
End of mission | |
Landing date | 17 October 2014, 16:24 UTC[3] |
Landing site | Vandenberg AFB Runway 12 |
Orbital parameters | |
Reference system | Geocentric |
Regime | Low Earth |
Semi-major axis | 6,698.18 km (4,162.06 mi) [4] |
Eccentricity | 0.0009437 [4] |
Perigee altitude | 320 km (200 mi) [4] |
Apogee altitude | 333 km (207 mi) [4] |
Inclination | 43.50 degrees [4] |
Period | 90.93 minutes [4] |
Mean motion | 15.84 [4] |
Epoch | 13 August 2014, 18:50:13 UTC [4] |
OTV program |
USA-240, also referred to as Orbital Test Vehicle 3 (OTV-3), is the second flight of the first Boeing X-37B, an American unmanned robotic vertical-takeoff, horizontal-landing spaceplane. It was launched to low Earth orbit aboard an Atlas V rocket from Cape Canaveral on 11 December 2012. Its mission designation is part of the USA series.
The spaceplane was operated by Air Force Space Command, which has not revealed the specific objectives of the mission or identity of the mission's payload. The Air Force stated only that the "mission will incorporate the lessons learned during the refurbishment process on OTV-1. As the X-37B program is examining the affordability and reusability of space vehicles, validation through testing is vital to the process. We are excited to see how this vehicle performs on a second flight." [5] [6]
OTV-3, the second mission for the first X-37B, and the third X-37B mission overall, was originally scheduled to be launched on 25 October 2012, [7] but was postponed because of an engine issue with the Atlas V launch vehicle. [8] The X-37B was successfully launched from Cape Canaveral on 11 December 2012. [5] [6] In March 2014, OTV-3 broke the X-37B program's endurance record by passing 470 days in space. [9] [10]
The vehicle landed at Vandenberg AFB on 17 October 2014 at 16:24 UTC, having spent just short of 675 days in orbit. [3] [11]
Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida.
A spaceplane is a vehicle that can fly and glide like an aircraft in Earth's atmosphere and maneuver like a spacecraft in outer space. To do so, spaceplanes must incorporate features of both aircraft and spacecraft. Orbital spaceplanes tend to be more similar to conventional spacecraft, while sub-orbital spaceplanes tend to be more similar to fixed-wing aircraft. All spaceplanes to date have been rocket-powered for takeoff and climb, but have then landed as unpowered gliders.
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The Boeing X-37, also known as the Orbital Test Vehicle (OTV), is a reusable robotic spacecraft. It is boosted into space by a launch vehicle, then re-enters Earth's atmosphere and lands as a spaceplane. The X-37 is operated by the Department of the Air Force Rapid Capabilities Office, in collaboration with United States Space Force, for orbital spaceflight missions intended to demonstrate reusable space technologies. It is a 120-percent-scaled derivative of the earlier Boeing X-40. The X-37 began as a NASA project in 1999, before being transferred to the United States Department of Defense in 2004. Until 2019, the program was managed by Air Force Space Command.
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USA-212 was the first flight of the Boeing X-37B Orbital Test Vehicle 1, an American robotic vertical-takeoff, horizontal-landing (VTHL) spaceplane. It was launched aboard an Atlas V rocket from Cape Canaveral on 22 April 2010, and operated in low Earth orbit. Its designation is part of the USA series.
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USA-233, or Wideband Global SATCOM 4 (WGS-4) is a United States military communications satellite operated by the United States Air Force as part of the Wideband Global SATCOM program, launched in 2012. The fourth Wideband Global SATCOM satellite, it is the first WGS Block II satellite to be launched. It is stationed at 88.5° East in geostationary orbit.
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USA-277, also referred to as Orbital Test Vehicle 5 (OTV-5), is the third flight of the second Boeing X-37B, an American unmanned vertical-takeoff, horizontal-landing spaceplane. It was launched to low Earth orbit aboard a Falcon 9 rocket from LC-39A on September 7, 2017. Its mission designation is part of the USA series.
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