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Enhanced performance rotorcraft rotor blade

A technology of rotor blades and rotorcraft, applied in the directions of rotorcraft, aircraft parts, aircraft control, etc., can solve problems such as non-optimal aerodynamic operating conditions of helicopters, and achieve the effect of reducing stall and improving forward speed.

Active Publication Date: 2013-10-23
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the retreating blade stalls and does not generate sufficient lift, non-optimal aerodynamic operating conditions for the helicopter may result

Method used

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  • Enhanced performance rotorcraft rotor blade
  • Enhanced performance rotorcraft rotor blade
  • Enhanced performance rotorcraft rotor blade

Examples

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Embodiment Construction

[0021] The following detailed description is exemplary in nature and is not intended to limit the disclosure or the application and uses of the disclosed examples. Descriptions of specific devices, techniques, and applications are provided as examples only. Modifications to the examples described herein will be readily apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other examples and applications without departing from the spirit and scope of the present disclosure. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. The present disclosure should be accorded scope consistent with the claims, and not limited to the examples described and illustrated herein.

[0022] Embodiments of the disclosure may be described herein in terms of functional and / or logical block components and var...

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Abstract

An enhanced performance rotorcraft rotor blade system and methods are presented. A rotor blade comprises an inboard blade portion, and at least one controllable surface coupled to the inboard blade portion. The at least one controllable surface is operable to improve a lift of the inboard blade portion by altering an angle of attack of the inboard blade portion independent of the rotor blade.

Description

technical field [0001] Embodiments of the present disclosure generally relate to flow over fluid dynamic surfaces. More specifically, embodiments of the present disclosure relate to enhancing fluid dynamic properties of flow over a fluid dynamic surface. Background technique [0002] When the helicopter reaches its maximum forward speed, the helicopter has a forward speed limitation primarily due to the "backward blade stall" blades and this forward speed limitation further results in a "backward blade stall". If the retreating blade stalls and does not generate sufficient lift, non-optimal aerodynamic operating conditions for the helicopter may result. Contents of the invention [0003] The present invention discloses an enhanced performance rotorcraft rotor blade system and method. The rotor blade includes an inboard blade portion and at least one controllable surface coupled to the inboard blade portion. The controllable surface is operable to increase the lift of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C27/46B64C13/00
CPCB64C27/72B64C2027/7266Y10T29/49336Y02T50/30B64C27/615
Inventor D·L·珀尔曼
Owner THE BOEING CO
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