阅读说明：本技术 主动自旋翼直升机 (Active self-rotary wing helicopter ) 是由 谭佑军 于 2019-09-23 设计创作，主要内容包括：在直升机机身上主动旋翼翼尖安装一组自由旋翼,当主动旋翼施加动力旋转的时候,在空气阻力的作用下使翼尖上自由旋翼向相反的方向旋转,自由旋翼旋转均衡主动旋翼翼根和翼尖不能同速切割空气的工作状态,提高了效率,由于自由旋翼是与主动旋翼相反方向旋转,降低了最外围旋翼翼尖的线性速度,降低了噪音也提高了效率。(A set of free rotor is installed to initiative rotor wingtip on the helicopter fuselage, when the initiative rotor applys power rotation, make free rotor to opposite direction rotation on the wingtip under the effect of air resistance, the operating condition of free rotor rotation equilibrium initiative rotor wing root and wingtip can not cut the air at the same speed has improved efficiency, because free rotor is rotatory with initiative rotor opposite direction, the linear speed of rotor wingtip outside has been reduced, the noise has been reduced and efficiency has also been improved.)

1. The utility model provides an initiative is from rotor helicopter, it includes a set of or multiunit initiative rotor on the fuselage, and the initiative rotor can be two or the multichip, has free rotor, characterized by at initiative rotor wingtip: a set of (2) initiative rotors of exerting power on the helicopter fuselage, install (1) free rotor that does not exert power on its wingtip, drive (1) free rotor forward motion when (2) initiative rotor is to (3) initiative rotor direction of rotation and rotate to opposite direction under the effect of air resistance promptly (4) free rotor direction of rotation motion, the operating condition of the balanced initiative rotor wing root of free rotor rotation and wingtip can not the same speed cutting air, because free rotor is rotatory with the opposite direction of initiative rotor, the linear velocity of rotor wingtip outside has been reduced.

Technical Field

The invention relates to a helicopter which is connected with a power system and drives a rotor wing on a wing tip to rotate in the opposite direction by air resistance in the rotating process of the rotor wing, in particular to a helicopter which can balance the air cutting speed of the original blade root and the blade tip in the self-rotating process of the rotor wing, can improve the efficiency of the blade, and can reduce noise while delaying the linear speed of the original wing tip from exceeding the sonic speed to improve the efficiency by self-rotating in the opposite direction of the self-rotating wing. The rotor is suitable for helicopters, autogyro and multi-axis gyroplanes.

Background

It is known that 1930 professor Fokker Germany designs an ideal rotor and transmission device to invent a helicopter. Since the linear speed of the rotor wing from the root to the tip is greatly different, the efficiency is low due to the uneven speed of cutting air, and the linear speed of the tip is high, easily exceeds the sonic reduction efficiency and is noisy. Also improved by a number of methods, large diameter rotors increase the number of blades and efficiency. The shape of the wing tip is changed to delay the falling of air and the wing tip, so that the noise is reduced. Such rotors have not been fundamentally changed until now.

Disclosure of Invention

The invention provides a new solution for changing the condition that the linear speed of the wing tip is large and easily exceeds the sound velocity reduction efficiency, and the noise is large. The scheme is that a free rotor wing is arranged at the tip of a rotor wing connected with a power system and self-rotates in the opposite direction

The technical scheme adopted by the invention for solving the technical problems is as follows: a set of free rotor wing is installed at the wing tip of the active rotor wing on the helicopter fuselage, when the active rotor wing applies power to rotate, the free rotor wing on the wing tip rotates in the opposite direction under the action of air resistance, the free rotor wing rotates to balance the working state that the wing root and the wing tip of the active rotor wing cannot cut air at the same speed, and the linear speed of the wing tip of the outermost rotor wing is reduced because the free rotor wing rotates in the opposite direction of the active rotor wing.

The invention has the beneficial effects that: the free rotor rotates balanced initiative rotor wing root and wingtip and can not cut the air at the same speed and can raise the efficiency, and the free rotor is rotatory with the opposite direction of initiative rotor, has reduced the linear velocity of outermost periphery wingtip, has reduced the noise, has also improved efficiency.

Drawings

Figure 1 is a top view of the rotor of the present invention in rotation.

Figure 2 is a rotary side elevational view of the rotor of the present invention.

In the figure, 1 is a free rotor, 2 is an active rotor, 3 is an active rotor rotating direction, and 4 is a free rotor rotating direction.

Detailed Description

In fig. 1, a set of (2) active rotors applying power on a helicopter fuselage, and (1) free rotors not applying power are installed on the wingtips of the active rotors, when the (2) active rotors rotate towards the (3) active rotor rotating direction, the (1) free rotors are driven to move forwards to rotate towards the opposite direction under the action of air resistance, namely, the (4) free rotors rotate towards the rotating direction, the free rotors rotate to balance the working state that the roots and the wingtips of the active rotors cannot cut air at the same speed, and the linear speed of the wingtips of the outermost rotors is reduced because the free rotors rotate in the opposite direction of the active rotors.