AEROMECHANICAL METHOD FOR MEASUREMENT OF HELICOPTER INFLIGHT CONDITION PARAMETERS AND DEVICE FOR ITS REALISATION Russian patent published in 2009 - IPC G01M17/00 

FIELD: physics, measurement.

SUBSTANCE: group of inventions is related to the field of metering technology and may find application for measurement of helicopter inflight condition parameters. Necessity to control attack angle and lifting rotor blade traction is stipulated by requirements of maneuverability and desire of operating organisations to transport cargos of maximum permissible weight. Functional ratios are detected between difference of pressure at blade of helicopter lifting rotor and lifting rotor traction values, ram action, longitudinal and transverse speeds of flight, gross weight, blade section attack angle and coefficient of lifting force. At that measured signals with the help of pressure difference detectors are transformed with the help of device functional transducers, and preset functional dependences in the form of mathematical ratios are used to calculate values of functional transducers voltages that are proportional to sought for parameters of helicopter inflight condition. Group of inventions makes it possible to expand resources of metering facilities, in which inlet signal is field of aerodynamic pressure forces. In this case number of parameters subject to measurement is increased, as well as accuracy of measurement.

EFFECT: increased number of parameters subject to measurement and also increased accuracy of measurement.

2 cl, 3 dwg