FACILITY DETERMINING MASS OF HELICOPTER IN HORIZONTAL FLIGHT Russian patent published in 2003 - IPC

FIELD: measurement technology, information and measurement systems, helicopter control systems. SUBSTANCE: facility includes three pressure transducers 1, 2, 3, each transducer being connected to drain outlet on surface of blade, which are located in one section of blade at distance r=0.7R from axis of rotor, where R is radius of rotor. First drain outlet is located on pressure side of blade at distance 0.4 chord from front edge, second outlet is located on suction side of blade at same distance and third outlet is located on pressure side of blade at distance 0.6 chord from front edge. Each pressure transducer is connected to input of its integrator 4, 5 or 6 which control inputs and input of rotation speed-to-voltage converter 8 are connected to transmitter of rotation speed of rotor 7. Outputs of integrators 4, 5, 6, of rotation speed-to-voltage converter 8, transmitters 9 of longitudinal speed of movement and element 10 of temperature outside helicopter are connected to inputs of matching device 11 which output is coupled to input of computer 12 linked to indicator 13. EFFECT: increased accuracy of determination of mass of helicopter in horizontal flight. 1 cl, 2 dwg