JET ENGINE: New York to London in Less Than an Hour with New Aerospace Technology

Hypersonic travel could be possible for civilians if modifications can be made to Lockheed Martin?s new S-R-72 spy plane, which can travel at six times the speed of sound. Two major concerns are passenger safety, because of the intense heat generated at that speed, and the sonic boom, which could damage buildings at destination cities. Hypersonic civilian travel is not expected until the year 2030.