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Driveshaft for rotary system

A technology for driving shafts and axes, which is applied in the field of rotating systems and can solve problems such as heavy machinery and complexity of transmission shafts

Inactive Publication Date: 2018-05-11
ROHR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Drive shafts with traditional U-joints or other traditional misalignment compensating devices can be heavier and mechanically more complex than desired for a rotary drive system

Method used

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  • Driveshaft for rotary system
  • Driveshaft for rotary system
  • Driveshaft for rotary system

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0019] The detailed description of one or more embodiments of the disclosed apparatus and methods is presented herein by way of example and not limitation with reference to the accompanying drawings.

[0020] figure 1 An exemplary embodiment of a rotorcraft, vertical take-off and landing (VTOL) aircraft 10 is depicted. Aircraft 10 includes a fuselage 12 with an extended empennage 14 . Dual counter-rotating coaxial main rotor assemblies 18 are located at fuselage 12 and rotate about main rotor axis A. As shown in FIG. The main rotor assembly 18 is driven by a multi-engine powerplant 20 comprising one or more engines 24 (ENG 1 and ENG 2 ) via a main gearbox (MGB) 26 ( image 3 ). Main rotor assembly 18 includes upper rotor assembly 28 driven in a first direction (eg, counterclockwise) about main rotor axis A and in a second direction about main rotor axis A opposite the first direction (ie, counter-rotating) (eg, clockwise) driven lower rotor assembly 32 . Each of upper rot...

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PUM

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Abstract

A composite driveshaft (110) includes a body (116) having a first end (118), a second end, and an intermediate portion (124) defining a driveshaft axis (DSA). The first end defines a first coupling region (130) and the second end defines a second coupling region. At least one virtual hinge (140) is arranged adjacent at least one of the first coupling region and the second coupling region. The at least one virtual hinge being defined by a plurality of axially extending openings (153) forming a plurality of axially extending flexible material webs (150) that accommodate both bending moments andaxial changes of the body.

Description

Background technique [0001] Exemplary embodiments relate to the field of rotating systems, and more particularly to compound drive shafts for rotating systems. [0002] In a rotary drive system, a drive shaft may be used to transmit torque from a rotating drive member to a rotating driven member. U-joints or other misalignment compensating devices are often used. For example, a U-joint may be placed at each end of the drive shaft or at an intermediate location, forming part of the connection between the drive shaft and the driving component and between the drive shaft and the driven component. Many types of misalignment compensation means are known. Basically, they are used to ensure that the drive shaft is only loaded with torque, and they minimize any bending and compression or tension deformation. An advantage is that the fatigue life of the drive shaft is increased in particular by limiting the bending stresses. In the absence of misalignment compensating means, any mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C3/02B64C27/14
CPCF16C2326/43B64C27/14F16C3/026B64C27/10B64C2027/8236F16D3/005F16C1/02
Inventor S.N.纳姆皮M.J.斯梅尔塞
Owner ROHR INC