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The middle rocket shows the straight-line flight configuration in which the direction of thrust is along the center line of the rocket and through the center of gravity of the rocket. On the rocket at the left, the nozzle has been deflected to the left and the thrust line is now inclined to the rocket center line at an angle called the gimbal ...
The plane was permanently retired in 1998, and the Air Force quickly disposed of their SR-71s, leaving NASA with the last two airworthy Blackbirds until 1999. [36] All other Blackbirds have been moved to museums except for the two SR-71s and a few D-21 drones retained by the NASA Armstrong Flight Research Center. [37] Lockheed U-2 "Dragon Lady"
Once in orbit, a spacecraft may fire rocket engines to make in-plane changes to a different altitude or type of orbit, or to change its orbital plane. These maneuvers require changes in the craft's velocity, and the classical rocket equation is used to calculate the propellant requirements for a given delta-v.
Rocket 3 (2020–2022) LauncherOne (2020–2023) Firefly Alpha (2021–present) Space Launch System (2022–present) RS1 (2023–present) Terran 1 (2023) SpaceX Starship (2023–present) Vulcan Centaur (2024–present) New Glenn (2025-present) Rocket 4 (Under development, expected 2025) Neutron (Under development, expected 2025)
The Aerial Regional-scale Environmental Survey (ARES) was a proposal by NASA's Langley Research Center to build a robotic, rocket-powered airplane that would fly one mile above the surface of Mars, [1] in order to investigate the atmosphere, surface, and sub-surface of the planet.
Orbital's Stargazer launches Pegasus carrying the three Space Technology 5 satellites in the skies of California, 2006. Air-launch-to-orbit (ALTO) is the method of launching smaller rockets at altitude from a heavier conventional horizontal-takeoff aircraft, to carry satellites to low Earth orbit.
A medium-lift launch vehicle (MLV) is a rocket launch vehicle that is capable of lifting between 2,000 to 20,000 kg (4,400 to 44,100 lb) by NASA classification or between 5,000 to 20,000 kilograms (11,000 to 44,000 lb) by Russian classification [1] of payload into low Earth orbit (LEO). [2]
However, mass fraction may have little to do with the costs of a rocket, as the costs of fuel are very small when compared to the costs of the engineering program as a whole. As a result, a cheap rocket with a poor mass fraction may be able to deliver more payload to orbit with a given amount of money than a more complicated, more efficient rocket.