Unlock instant, AI-driven research and patent intelligence for your innovation.

Helicopter tail propeller

A technology for helicopters and thrusters, applied in the field of aircraft, can solve the problems of complex configuration and structure of coaxial dual rotors + tail thrusters, and achieve the effects of light weight, simple structure and reduced safety risks

Pending Publication Date: 2020-06-19
常州华创航空科技有限公司
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing coaxial dual-rotor + tail thruster configuration is complex, and the planetary gear train is used to realize the deceleration function, which increases the size and weight of the tail thruster, and puts forward higher requirements for its light weight. Lubrication requirements for gear trains require the design of complex lubrication systems and detection systems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Helicopter tail propeller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] An embodiment of the present invention, such as figure 1 Shown, the present invention provides a kind of helicopter tail thruster, comprise input shaft 1 and output shaft 2 of propeller, input shaft 1 is connected with the tail drive shaft of helicopter, output shaft 2 is connected with the tail propeller of helicopter, input shaft 1 and The output shaft 2 is connected so that the propeller can be installed between the tail drive shaft and the propeller of the helicopter, and the thrust transmitted by the tail propeller is directly used for the high-speed flight of the helicopter, wherein the connection between the input shaft 1 and the tail drive shaft of the helicopter The mode, the connection mode of the output shaft 2 and the tail propeller of the helicopter, and the mode of providing thrust to the helicopter through the tail propeller of the helicopter adopt the prior art, and are not redundantly described here.

[0035] Preferably, the input shaft 1 and the output...

Embodiment 2

[0041] An embodiment of the present invention, such as figure 1 As shown, on the basis of Embodiment 1, the casing 5 is an annular structure, and the interior of the casing 5 is provided with a through installation cavity, and the two ends of the installation cavity are respectively provided with corresponding to the first bearing and the second bearing 4. card slot.

[0042] By setting the casing 5 as an annular structure, and the mounting cavity of the casing 5 is provided with a card slot matching the first bearing 3 and the second bearing 4, it is beneficial to fix the first bearing 3 and the second bearing 4, and It is beneficial to transfer the load transferred by the tail propeller through the first bearing 3 to the casing 5, and finally to the helicopter fuselage.

[0043] Further, the outer sides of the first bearing 3 and the second bearing 4 are provided with an oil seal mounting seat 6 matching the mounting cavity, and a lip-shaped oil seal 7 connected with the ou...

Embodiment 3

[0048] An embodiment of the present invention, such as figure 1 As shown, on the basis of Embodiment 1 or Embodiment 2, a spacer 11 is provided between the first bearing 3 and the second bearing 4, and by setting a spacer 44 between the first bearing 3 and the second bearing 4, This facilitates the positioning of the first bearing 3 and the second bearing 4 .

[0049] Preferably, both the first bearing 3 and the second bearing 4 are fixed by lock nuts 12 .

[0050] Preferably, the input shaft 1 and the output shaft 2 are connected by a floating spline, which facilitates the transmission of thrust, and both ends of the floating spline are sealed by the second annular sealing ring 13 .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a helicopter tail propeller. The propeller comprises an input shaft connected with a tail transmission shaft of a helicopter, and an output shaft which is connected with a tailpropeller of the helicopter, wherein the input shaft is connected with the output shaft, a first bearing and a second bearing are arranged outside the output shaft, the first bearing is close to a tail propeller and is used for bearing thrust and bending moment transmitted by the tail propeller, the second bearing is close to the tail transmission shaft and is used for supporting the output shaft,a casing is arranged outside the first bearing and the second bearing, and the casing is connected with a helicopter body of a helicopter so that loads generated by the tail propeller are transmittedto the casing through the first bearing and then transmitted to the helicopter body of the helicopter through the casing. The propeller is advantaged in that the propeller does not contain a speed reduction structure, so the structure of the propeller is simpler, the weight is lighter, the tail transmission shaft of the helicopter can be prevented from bearing excessive axial force, and the safety risk is favorably reduced.

Description

technical field [0001] The invention relates to the technical field of aircraft, in particular to a helicopter tail propeller. Background technique [0002] As one of the unique creations of aviation technology, helicopters have greatly expanded the application range of aircraft. Helicopters are typical military and civilian products that can be widely used in transportation, patrol, tourism, rescue and other fields. The maximum cruising speed of a conventional helicopter is usually around 300km / h, while the speed of a fixed-wing aircraft can be very high, but it needs to take off and land on the airport runway, and cannot hover and fly at low speed. Therefore, if there is a kind of aircraft that can have the advantages of helicopter and fixed-wing aircraft, it will have a wide range of purposes. [0003] Existing high-speed helicopters have two configurations of coaxial dual rotors + tail thruster and tilting rotors. Among them, the configuration of coaxial dual rotors + t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B64C27/12
CPCB64C27/12
Inventor 刘志强丁文强石前列施冰孙玉飞
Owner 常州华创航空科技有限公司