Helicopter

Abstract

A helicopter has a main rotor with propeller blades which is driven by a rotor shaft and which is hinge-mounted to this rotor shaft. The angle between the surface of rotation of the main rotor and the rotor shaft may vary. A swinging manner on an oscillatory shaft is essentially transverse to the rotor shaft of the main rotor and is directed transversally to the longitudinal axis of the vanes. The main rotor and the auxiliary rotor are connected to each other by a mechanical link. The swinging motions of the auxiliary rotor controls the angle of incidence (A) of at least one of the propeller blades of the main rotor.

Description

RELATED APPLICATION[0001]This application claims priority to Belgian Patent Application No. 2006 / 0043 entitled AUTOSTABIELE HELICOPTER by Alexander VAN DE ROSTYNE, which was filed on Jan. 19, 2006. The contents of that application are incorporated by reference herein.BACKGROUND[0002]The present disclosure concerns an improved helicopter.[0003]The disclosure concerns a helicopter generally. In particular, but not exclusively it is related to a toy helicopter, and in particular to a remote-controlled model helicopter or a toy helicopter.SUMMARY[0004]It known that a helicopter is a complex machine which is unstable and as a result difficult to control, so that much experience is required to safely operate such helicopters without mishaps.[0005]Typically, a helicopter includes a body, a main rotor and a tail rotor.[0006]The main rotor provides an upward force to keep the helicopter in the air, as well as a lateral or forward or backward force to steer the helicopter in required directio...

AI Technical Summary

Benefits of technology

[0008]Solutions to slow down the effect have already been provided up to now, including the application of stabilizing rods and weights at the tips of the propeller blades.

[0020]The present disclosure aims to minimize one or several of the above-mentioned and other disadvantages by providing a simple and cheap solution to auto stabilize the helicopter, such that operating the helicopter becomes simpler and possibly reduces the need for long-standing experience of the pilot.

[0026]In practice, it appears that such an improved helicopter is more stable and stabilizes itself relatively quickly with or without a restricted intervention of the user.

[0029]By measuring the relative angular displacement of the swing and by using the measured signal as an input signal for a microprocessor which controls the drive of the main rotor and the drive of the tail rotor as a function of a stabilizer algorithm, the thrust of the tail rotor can be adjusted so as to counteract the unwanted effect of the disturbance and to thus automatically restore the stable flight conditions for the helicopter, with minimal or any intervention of the pilot.

[0030]In this configuration, the tail rotor is used essentially as a gyroscope, such that the gyroscope of the known helicopters can be omitted. This can also result in a lot of weight being saved.

Problems solved by technology

It known that a helicopter is a complex machine which is unstable and as a result difficult to control, so that much experience is required to safely operate such helicopters without mishaps.

The main rotor has a natural tendency to deviate from its position, which may lead to uncontrolled movements and to a crash of the helicopter if the pilot loses control over the steering of the helicopter.

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