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AIRCRAFT AUTOMATIC FLIGHT CONTROL SYSTEM

  • US 3,848,833 A
  • Filed: 07/14/1972
  • Issued: 11/19/1974
  • Est. Priority Date: 07/14/1972
  • Status: Expired due to Term
First Claim
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1. An automatic flight control system for an aircraft having the usual manual control wheel and control mechanism between it and the craft control surface for controlling the attitude of the craft in accordance with movement of said control wheel, the combination comprising an automatic pilot servomotor system having a servomotor, an output member connected with said control mechanism, and clutch means adapted when engaged to move said control mechanism and control surface in accordance with movement of said servomotor and when disengaged to permit free movement of said control mechanism and control surface by said control column, automatic flight control means including stable attitude reference and flight path control means for controlling said servomotor system when engaged to automatically control said control surfaces to automatically maintain said craft attitude and flight path, control wheel steering means for said automatic flight control system including switch means actuable by the human pilot for disengaging said servomotor clutch means during actuation of said switch means whereby the human pilot may alter said attitude and flight path through said manual control mechanism, and logic means responsive to actuation of said switch means for synchronizing said automatic flight control means to the attitude and flight path established by said human pilot through said manual control mechanism and upon deactuation of said switch means to re-engage said servomotor clutch means whereby said automatic flight control means thereafter controls said aircraft from said manually estalished attitude and flight path.

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