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High speed moving platform air inlet and method

A technology for moving platforms and air intakes, applied in the field of ram air intakes, which can solve problems such as unhelpful conduit flow, instability, and inability to achieve performance parameters

Active Publication Date: 2012-06-06
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, current, flush-mounted ram air intakes often do not achieve desirable performance parameters
Also, at low mass flows, flush-mounted ram inlets also tend to produce unhelpful Helmholtz-type duct flow instabilities arising from the correlation between resonance in the duct and separation of the adjacent boundary layer in front of the inlet

Method used

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  • High speed moving platform air inlet and method
  • High speed moving platform air inlet and method
  • High speed moving platform air inlet and method

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Embodiment Construction

[0026] The following description is exemplary only and is not intended to limit the disclosure, application or use.

[0027] refer to figure 1 An access device 10 according to an embodiment of the present invention is shown located on the fuselage 14 of the mobile platform 12, in the region of the fuselage / wing interface, adjacent to but below the wing 14a. In this example, the mobile platform 12 comprises an aircraft, but it will be appreciated that the access device 10 is applicable to any form of high speed mobile platform, such as other aerial platforms, for example on missiles or rockets, or even on high speed land vehicles, Such as trains, or on ocean ships. However, it is contemplated that the inlet device 10 has particular application to commercial and military jet-powered aircraft employing environmental control systems using at least one cabin air compressor (CAC).

[0028] refer to Figure 2A , 2B , 2C, 3 and 5, the inlet arrangement 10 includes a Pitot inlet 16...

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Abstract

An inlet apparatus and method for use with a cabin air compressor on a high speed, airborne mobile platform, such as a commercial or military aircraft. The apparatus includes a Pitot inlet of a desired shape that is supported outside an exterior surface of a fuselage of the aircraft by a diverter structure. The diverter structure diverts a low energy portion of a boundary layer so that the low energy portion does not enter the Pitot inlet. The Pitot inlet receives the higher energy portion of the boundary layer and channels a ram airflow to an inlet of a cabin air compressor. The apparatus provides a recovery factor (RF) of at least about 0.8 at a cabin air compressor (CAC) inlet face, which keeps the electric power required to drive the CAC within available power limits, while minimizingthe drag of the inlet apparatus.

Description

[0001] Cross References to Related Applications [0002] This application is related to the subject matter of U.S. Patent Application No. 11 / 553,181, entitled "Tandem Inlet Apparatus and Method for Aerial Mobile Platforms" (Boeing Docket No. 06-0310; HDP Docket No. 7784-000962), the disclosure of which Incorporated by reference. technical field [0003] The present invention relates to ram air intakes for aerial mobile platforms, and more particularly to high efficiency ram air intakes suitable for use in high speed commercial jet aircraft to supply air to subsystems of the aircraft. Background technique [0004] Various commercial and military aircraft commonly use cabin air (CA) inlets for the environmental control systems (ECS) employed by such aircraft. Aircraft with CA inlets use ram air for cabin pressurization instead of engine bleed. With such aircraft, ram air collected by the CA inlet is typically supplied to an electric motor driven cabin air compressor (CAC), t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64D13/00
CPCB64D13/00B64D2241/00Y02T50/56B64D2033/0226B64D33/08B64D2013/0622Y10T137/0536Y02T50/50
Inventor 普拉迪普·G·帕里克罗伯特·H·威利
Owner THE BOEING CO