Driving to Mach 1: 'jetmobiles' try to go supersonic

Article Abstract:

The design philosophies used in two 'jetmobiles' in the quest for the land speed record is presented. The 'Spirit of America' jetmobile uses a single jet engine and relies on computer controls to attenuate the effects of sonic pressure on the car's body. The 'Thrust SSC' uses two jet engines and uses engine placement to compensate for lift forces.

Automobiles, Racing, Automobile racing, Jet propulsion, Car speed records

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Little bangs

Article Abstract:

DARPA officials have arranged a deal with three aerospace companies for the creation of a micro chip propulsion system that can efficiently be used for defense and satellite communication purposes. The team has successfully designed a 15-thruster chip capable of carrying out digital propulsion.

Semiconductor chips, Integrated circuits, Contracts, Aerospace industry, Space vehicles, United States. Defense Advanced Research Projects Agency, Spacecraft engines, Northrop Grumman Space & Mission Systems Corp., Aerospace Corp. (El Segundo, California)

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Builders of light pipes

Article Abstract:

Issues are presented concerning the development of optical communications fibers which carry an optical signal along the length of a network without the need for the signal to be converted into an electrical format along the route.

Innovations, Telecommunications industry, Communications industry, Fiber optics, Digital communications, Fibre optics

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