The X-37 B aerodynamic design was derived from the larger Space Shuttle orbiter, hence the X-37 B has a similar lift-to-drag ratio, and a lower cross range at higher altitudes and Mach numbers compared to Darpa Hypersonic Technology Vehicle.An early requirement for the spacecraft called for a delta-v of 7,000 mph (3.1 km/s) to change its orbit.An early goal for the program was for the X-37 B to rendezvous with satellites and perform repairs.The X-37 B was originally designed to be carried into orbit in the Space Shuttle cargo bay, but underwent redesign for launch on a Delta IV or comparable rocket after it was determined that a shuttle flight would be uneconomical.

свернуть