Parachute-type helicopter

Abstract

A utility helicopter generally has two propellers, the bigger propeller provides a rising force, and the smaller propeller provides a forward propulsive force. The invention adopts three propellers and is called a parachute-type helicopter, wherein, two of the three propellers are the same with a utility helicopter; the bigger propeller provides a rising force; and the smaller propeller provides a forward propulsive force. A parachute-shaped truncated cone is mounted at the bottom part of the parachute-type helicopter; the third propeller is mounted at the top of the truncated cone; the rotation direction of the third propeller is opposite to that of the bigger propeller which provides a rising force, so as to excellently keep the balance of the parachute-type helicopter; the shape and the function of the propeller on top of the truncated cone are the same with a ventilating fan, and the propeller can absorb airflow under the truncated cone; through high speed revolution, abundant air is insufflated into a container of the truncated cone to form a pressure which rushes out of a small hole at the bottom part of the truncated cone in high speed, and generates an upward propulsive force acting on the parachute-type helicopter; and both of the propellers mounted on top of the truncated cone and the big propellers mounted on top of the parachute-type helicopter can produce upward ascensional force, so that the working efficiency of a motor can be improved. The invention changes the foundational structure of a helicopter, improves the efficiency of a propeller, and enables a helicopter to fly higher and farther with the same energy.

Description

1. Technical field:

[0001] helicopter 2. Background technology:

[0002] Helicopter gas duct rotor blade flap system (application number 03109296.9)

[0003] A helicopter gas duct rotor blade flap system, which is suitable for high-speed helicopters with high maneuverability, produces a gas barrier that guides the rotor-induced airflow during its operation, which can reduce the air flow to a certain extent. The diameter of the rotor increases the rotational speed of the rotor, reduces the vibration and noise of the helicopter rotor, and increases the flight speed of the helicopter.

[0004] Human-powered helicopter (application number 85102445)

[0005] The invention belongs to the field of aviation science and technology. The invention has higher requirements on aerodynamic efficiency, material selection, technological level and transmission device, etc., and realizes the conversion of human kinetic energy into high mechanical energy, which is mainly realized by means of ...

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