Newsgroups: sci.space
Path: cantaloupe.srv.cs.cmu.edu!rochester!udel!gatech!asuvax!cs.utexas.edu!usc!elroy.jpl.nasa.gov!decwrl!netcomsv!butch!crayxmp.lmsc.lockheed.com!vandenbe
From: vandenbe@crayxmp.lmsc.lockheed.com (J.A. Vanden Beukel)
Subject: Re: Drag Free Satellites
Message-ID: <1993Apr26.191442.26802@butch.lmsc.lockheed.com>
Sender: news@butch.lmsc.lockheed.com
Organization: Lockheed Missiles & Spaces Co.
Date: Mon, 26 Apr 93 19:14:42 GMT
Lines: 4

Regarding drag free satellites, Joe Cain gives a good description of the concept.  It is however more than a concept.  The Navy's Triad satellite succesfully used drag free control.  Drag free control is an integral part of the Stanford Gravity Probe-B spacecraft, due to fly in 1999.  It is also part of the European STEP satellite.

Jeff V.

