posted on Nov, 2 2003 @ 06:52 AM
Interesting this comes up when this article just came out a few days ago..
Alliance Aerospace has been selected to build and support flight tests of the X43-C Hypersonic demonstrator by NASA's Langley Research Center. The
award of $149 million will cover a 5.5 year program. The Allied team will include Boeing and Pratt & Whiteny. The X-43C is to demonstrate a hypersonic
vehicle powered by an advanced air-breathing supersonic combustion ramjet/scramjet that can accelerate from Mach 5 to Mach 7 and cruise at about 4,800
mph. at an altitude of 100,000 ft. Three flights are planned, each of several minutes' duration.