XM-21

     Mostly engine, this vehicle was used as a target for the Nike and Hawk air defense systems under test at White Sands. The XM-21 was guided by radio remote control and its jet turbo engine propelled it to speeds up to 500 knots. A two-stage parachute was used to bring the craft safely back to the ground. U.S. Army

• Length: 17.5 feet
• Wing Span: 11 feet
• Weight: 2,285 pounds
• Propellant: Liquid
• Ceiling: 40,000 feet
• Speed: Mach .8