Abstract
A method is proposed for calculating main aerodynamic characteristics of the main rotor of the Mi-26 helicopter: a lift, a reactive moment, a required power of the propulsion system, a speed of the inductive air flow, a throttle response coefficient, a speed of the horizontal flight. This method based on the pressure propeller theory. The parameters of the Mi-26 helicopter and the propeller of the experimental setup calculated according to the pressure theory of the main rotor are experimentally confirmed. The percentage of the discrepancy between the statistical data on the aerodynamic characteristics of the Mi-26 helicopter rotor calculated with the pressure theory does not exceed 1.5%.
Highlights
The aerodynamic calculation of the helicopter main rotor is theoretically described by the classical theory of the helicopter main rotor, developed back in the fifties of the last century by M
The PHTP theory is a good addition to the vortex, impulse and classical theories of helicopter main rotor and for a designer who designs any aircraft that has helicopter main rotor, it is a good help in his creative work
The PHTP theory, we will start from the idealized representation of the velocity head of the blade, in which all parameters and characteristics of the helicopter main rotor are calculated in the most energy-intensive mode of its operation - hovering, which is associated with its safety in all modes work [1]:
Summary
The aerodynamic calculation of the helicopter main rotor is theoretically described by the classical theory of the helicopter main rotor, developed back in the fifties of the last century by M. The pressure-applied method of determining the main aerodynamic characteristics of a helicopter blade, based on the PHTP theory, is a simple, reliable and fairly accurate method for calculating the main parameters of the helicopter main rotor of the Mi-26 helicopter. The PHTP theory is a good addition to the vortex, impulse and classical theories of helicopter main rotor and for a designer who designs any aircraft that has helicopter main rotor, it is a good help in his creative work. The PHTP theory can be used to determine the aerodynamic characteristics of a helicopter propeller, and to determine the parameters of the propeller of a subsonic aircraft
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