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Plasma actuator system and method for use with a weapons bay on a high speed mobile platform

A motion platform, actuator technology used in transportation and packaging, affecting air flow across aircraft surfaces, drag reduction, etc., which can solve problems such as increasing aircraft weight, complexity and life cycle costs

Active Publication Date: 2008-12-31
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

mechanical spoilers typically require mechanical linkages and electromechanical and / or hydraulic actuators, all of which add significantly to the weight, complexity, and life cycle cost of the aircraft

Method used

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  • Plasma actuator system and method for use with a weapons bay on a high speed mobile platform
  • Plasma actuator system and method for use with a weapons bay on a high speed mobile platform
  • Plasma actuator system and method for use with a weapons bay on a high speed mobile platform

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Embodiment Construction

[0025] The following description is merely exemplary in nature and is not intended to limit the disclosure, application, or uses.

[0026] Referring to FIG. 1 , a flow control system 10 for use on an airfoil 14 of a motion platform 12 is shown. In this example, the motion platform 12 is an aircraft and, for convenience, will be referred to as "aircraft 12" throughout the following discussion. It should be immediately appreciated, however, that the teachings of the present disclosure are not limited to use with winged aerodynamic platforms, such as commercial and military aircraft, but can be readily applied to unmanned aerial vehicles (UAVs), missiles, rotorcraft, ground on vehicles and even high-speed water craft.

[0027] In FIG. 1 , system 10 employs a plurality of plasma actuators 16 spaced along a Coanda surface 18 of airfoil 14 . Although only four plasma actuators 16 are shown, more or fewer may be employed to meet the needs of a particular application. In this examp...

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Abstract

A system and method for controlling a freestream air flow over a surface of an airborne mobile platform, for example an aircraft. In one implementation the system includes a plurality of plasma actuators used on an undersurface of a fuselage of an aircraft upstream of a weapons bay of the aircraft. When the plasma actuators are energized an induced flow is created adjacent the actuators. The induced flow operates to deflect the shear layer created when the freestream air flow moves over the weapons bay (while the bay doors are open), away from the weapons bay. This significantly reduces the oscillating acoustic pressure waves that would normally be produced if the shear layer turns into the weapons bay. The system and method significantly reduces acoustic noise inside the weapons bay and improves separation of ordnance from the weapons bay.

Description

[0001] Cross References to Related Applications [0002] This application is generally related to the subject matter of concurrently filed US applications Serial Nos. 11 / 753,857 (Boeing Docket No. 07-0456) and 11 / 753,876 (Boeing Docket No. 06-0438), filed May 25, 2007. [0003] This disclosure is also generally related to subject matter of US Application Serial No. 11 / 403,252, filed April 12, 2006 (4 / 12 / 06), assigned to The Boeing Company. [0004] All applications mentioned above are hereby incorporated by reference into this disclosure. technical field [0005] The present disclosure relates to plasma actuators, and more particularly, to the use of one or more plasma actuators to improve the performance of weapons bays of high speed moving platforms by modifying the boundary layer flow over the weapons bays when the weapons bay doors of the moving platforms are open. Acoustic properties, and also improve the separation of weapons released from the weapons compartment. Bac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C21/00
CPCB64C21/00Y02T50/10
Inventor 斯科特·L·施威姆利小唐纳德·V·德劳因
Owner THE BOEING CO