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Intelsat-Ⅵ卫星招标结果,休斯公司的自旋稳定方案获胜,击败了福特公司的三轴稳定控制方案,引起了宇航界人士极大的关注。从六十年代到七十年代初,自旋稳定方案在静止通信卫星领域占有垄断地位,Intelsat-Ⅰ～Ⅳ全都采用这种控制方式。这类卫星寿命长,可靠性高,但提供的电力有限,姿态控制精度也受到限制。到了七十年代中期,卫星的姿态控制的方向逐渐转向三轴稳定,典型卫星有交响乐(Symphonie)、通信卫星(Satcom)、Intelsat-V、印度卫星(Insat)等。面对着这种竞争,从事自旋稳定卫星研制的厂商锲而不舍,不断对方案加以改进,并充分利用新一代运载工具——航天飞机给自旋稳定卫星结构上带来的方便(可使卫星直径的限制放宽),
Intelsat-VI satellite tender results, Hughes’s spin stability program won, defeated Ford’s three-axis stability control program, causing great concern to the aerospace community. From the 1960s to the early 1970s, the spin-stabilization scheme occupied a monopoly position in the field of stationary communication satellites. All of Intelsat-Ⅰ ~ Ⅳ adopted this control method. The long life of such satellites, high reliability, but provide limited power, attitude control accuracy is also limited. By the mid-seventies, the direction of satellite attitude control gradually turned to triaxial stability. Typical satellites include Symphonie, Satcom, Intelsat-V, and Insat. In the face of such competition, manufacturers engaged in the development of spin-stable satellites persevere in continuously improving the program and making full use of the new generation of vehicles - the convenience of a space shuttle to stabilize the structure of the spin-stable satellite (satellite diameter Relaxation of the restrictions),