| 摘要 |
Vacuum systems deriving their trustworthiness by means of simplified apparatus, wherein, the vacuum source will be derived from simple venturis common to the state of the art, whereby, ice prevention will be achieved by use of bleed air from the turbine section of the jet engine used to power the aircraft. Venturi ice prevention will be selectable by the pilot and will fail safe to the on position should the aircraft encounter a complete electrical failure. The remaining units comprising of the vacuum system and connective tubing will all be common to the state of the art. One of the vacuum systems will supply regulated vacuum pressure to the earth reference gyros by means of a venturi being located within the inlet mouth of a jet engine, said pressure then routed to a pressure regulator and then routed to the gyros, therefore, regulated pressure will be available immediately following engine start and will remain available in flight even should its respective engine fail. Another vacuum system will supply variable vacuum pressure to the rate gyros, said variable being responsive to and proportional with the speed of the aircraft, thereby, the deflective sensitivity of the rate gyros will increase should the speed of the craft increase, conversely, the deflective sensitivity will decrease should the speed of the craft decrease, thus, speed compensated rate gyros.
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