FLIGHT AIR DATA MEASURING SYSTEM

摘要

The invention relates to aviation. The inventive aircraft flight air data measuring system is characterised in that all blocks and units thereof such as airspeed heads which are provided with receiving openings and an electric heating anti-ice system and are connected to pressure sensors by pneumatic lines, external air temperature sensors and a flight path computer are arranged in a single special aerodynamically streamlined body which is fixable to the aircraft and consists of axisymmetric body elements. Said flight air data measuring system is selected such that it is autonomous and communicates with the aircraft exclusively by information transmitting and power supplying channels via electrical connectors. In order to provide the system with the autonomy in terms of power supply, power supply units are placed in the body thereof. In order to extend the operating measuring range, reduce the structure weight and the number of required pressure measuring channels, the system is provided with the airspeed heads (1-4) which are protruded from the body and embodied in the form multi-rib rods with intake holes arranged between the ribs thereof. In order to reduce the power required by the anti-ice system and to simplify the design of the entire structure, the system body surface or the part thereof can be made of a hydrophobic material. In order to extend the flight data operating measuring range up to an angle of attack of -180°=a=180° and an gliding angle of -180°=ß=180°(i.e. in a full scale) the system can consists of several independent subsystems, wherein all blocks and units are arranged in individual aerodynamically streamlined bodies fixable to the aircraft elements and said flight air data measuring subsystems are constructed in such a way that they are autonomous and communicate with the aircraft exclusively by information transmitting and power supplying channels. The inventive flight air data measuring system makes it possible to easily replace a defective system in the case of a failure.