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An internally tensioned inflatable device for active flow control drag reduction

An active flow control, interior volume technology for vehicle components, streamlined bodywork, transportation, and packaging that addresses unsightly, less-than-ideal diffuser panels and/or spoilers

Inactive Publication Date: 2021-03-26
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some cases, fixed diffuser panels and / or spoilers may be less than ideal due to unsightly

Method used

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  • An internally tensioned inflatable device for active flow control drag reduction
  • An internally tensioned inflatable device for active flow control drag reduction
  • An internally tensioned inflatable device for active flow control drag reduction

Examples

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Embodiment Construction

[0072] While the foregoing description of inflatable active flow control devices will be described in the context of a passenger vehicle, inflatable active flow control devices can be used for other active flow control in other types of vehicles and / or non-vehicular applications in application.

[0073] An inflatable active flow control device includes an internally tensioned inflatable structure that can be deployed from a retracted position when required to reduce drag and / or improve vehicle stability. By way of example only, an inflatable active flow control device may be used to implement a deployable underbody diffuser and / or a deployable rear spoiler that is activated at higher vehicle speeds and retract. A deployable diffuser and / or rear spoiler may be used to improve fuel economy and / or increase stability without adversely affecting vehicle aesthetics.

[0074] As described further below, an internally tensioned inflatable structure according to the present disclosur...

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PUM

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Abstract

The invention discloses an internally tensioned inflatable device for active flow control drag reduction. The inflatable active flow control device includes a first surface, a second surface, and a spring including one end connected to the first surface and an opposite end connected to the second surface. A flexible material is connected to the first surface and the second surface around the spring, defines an inflatable interior volume, and includes a plurality of wires extending through the inflatable interior volume at spaced locations between opposing inner surfaces of the flexible material.

Description

technical field [0001] The present disclosure relates to devices for actively reducing aerodynamic drag and / or increasing vehicle stability. Background technique [0002] The information provided in this section is intended to generally present the context of the disclosure. To the extent described in this section, the work of the presently named inventors, and aspects of the description that may not conform to the prior art at the time of filing, are neither expressly nor implicitly admitted to be prior art with respect to the present disclosure. technology. [0003] Vehicles may include fixed diffuser panels and / or spoilers to reduce aerodynamic drag, which improves fuel economy. These devices may also be used to improve aerodynamic stability by providing downward force and / or controlling downward force when the vehicle is exposed to severe and variable crosswinds. However, in some cases, fixed diffuser panels and / or spoilers may be less than ideal due to their unsightl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D35/00G06F30/28
CPCB62D35/007G06F30/28B62D37/02Y02T10/82
Inventor T.韩W.M.金P.W.亚历山大C-H.严B.哈利希
Owner GM GLOBAL TECH OPERATIONS LLC
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