METER OF AEROMETRIC PARAMETERS OF FLYING VEHICLE Russian patent published in 1994 - IPC

FIELD: flying vehicles. SUBSTANCE: meter of aerometric parameters has two flow-through pressure pickups 1 and 2 each of which contains one pivot tube. Pressure pickups are opposite relative to each other and are communicating through their capillary pressure dividers 10 and 11 with entry openings 6 and 7 receiving the throttled pressure. The position of pneumatic passages 14 and 15 discharging static pressure on the capillary pressure dividers is determined by relationship of coefficients of pressure pickups 1 and 2 over the total and throttled pressure passages. Static pressure pneumatic passages 14 and 15 are brought in communication through averaging chamber 16 and pneumatic passages 18 and 20 containing anemosensitive metering and compensating elements 21 and 19 forming the intelligence signals of barometric altitude and vertical velocity which are included in their electric measuring circuit 26 connected via low-frequency filters 29 and 32 and differentiator 31 with outputs of the meter by the barometric altitude and vertical velocity. Total-pressure entry openings 12 and 13 are in communication with entry openings of the nominal static pressure source through jet inverters 37 and 38 whose outlets are also in communication with summing chambers 39 and 40 which are in communication with pneumatic passages and with throttled pressure entry openings 6 and 7. The outlets of summing chambers 39 and 40 are in communication with passages 41 and 42 containing velocity and slip angle anemosensitive elements 47 and 48 which are included in electric measuring circuit 49 whose output signal is divided by air velocity and slip angle channels by means of phase-sensitive amplifier 50, uncontrolled rectifier 53 and phase-sensitive rectifier 55. Air velocity and slip angle channels are connected with the meter outputs. EFFECT: enhanced accuracy and extended informativeness and range of measurement towards low velocities. 1 dwg