41. Unlike its predecessor, the F / A-22 can fly at supersonic speeds for long ranges. 42. The bow shock significantly increases the drag in a vehicle traveling at a supersonic speed . 43. The Stiletto was developed to investigate the design of an aircraft at sustained supersonic speeds . 44. SpaceshipTwo reached supersonic speeds in this first powered flight. 45. Meanwhile, the fliers were back in the air, delivering death and destruction at supersonic speed . 46. There Gilruth led research using rockets to test the dynamics of vehicles at supersonic speeds . 47. The plane is designed to combine supersonic speeds with stealth technology to thwart enemy radar. 48. The F-22 can evade radar with its stealth technology and fly at supersonic speeds without afterburners. 49. The Lewinsky story then travelled with supersonic speed . 50. At supersonic speeds , Oswald efficiency number decreases substantially.