Systems and methods for attenuation of noise and wakes produced by aircraft

A technology of aircraft and flow direction, which is applied in the direction of affecting the air flow flowing through the surface of the aircraft, generating vortices, reducing drag, etc., which can solve problems such as high cost and passenger inconvenience

Active Publication Date: 2012-10-17
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Separation minima represent a key limiting factor in the productivity of a growing number of airports around the world, with knock-on effects on the entire air traffic system, not to mention inconvenience to passengers
Airport congestion and delays translate into higher costs for aircraft transport

Method used

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  • Systems and methods for attenuation of noise and wakes produced by aircraft
  • Systems and methods for attenuation of noise and wakes produced by aircraft
  • Systems and methods for attenuation of noise and wakes produced by aircraft

Examples

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Embodiment Construction

[0041] will now refer to the figure 1 and figure 2 An embodiment will be illustrated with the aircraft and its flight control surfaces respectively described in . In particular, this embodiment relates to mounting the noise reducing, wake mitigation device within the flap element. However, it should be understood that such noise reduction, wake mitigation devices may also be installed in other types of aircraft flight control surfaces, such as ailerons, jet deflectors, spoilers, and slats installed on fixed wing aircraft Inside. Such noise reduction, wake mitigation devices may also be installed in the wing tips or winglets of fixed wing aircraft and in the blade tips of rotorcraft.

[0042] figure 1 Shown is an aircraft 100 with a noise mitigation system in conjunction with attachment to a wing 102 ( figure 1 Only one wing visible in ) is used with control surfaces in high-lift configurations. figure 1 The wing 102 seen in has the following flap elements coupled to its...

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PUM

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Abstract

Systems and methods for reducing the trailing vortices and lowering the noise produced by the side edges of aircraft flight control surfaces, tips of wings and winglets, and tips of rotor blades. A noise-reducing, wake-alleviating device is disclosed which incorporates an actuator and one or more air-ejecting slot-shaped openings coupled to that actuator and located on the upper and / or lower surfaces and / or the side edges of an aircraft flight control surface or the tip of a wing, winglet or blade. The actuation mechanism produces sets of small and fast-moving air jets that traverse the openings in the general streamwise direction. The actuation mechanism destabilizes the flap vortex structure, resulting in reduced intensity of trailing vortices and lower airplane noise.

Description

[0001] Related Patent Applications [0002] This application is based on the benefit of US Provisional Application 61 / 474,144, filed April 11, 2011, under Title 35, USC. Section 119(e). technical field [0003] Embodiments disclosed herein relate generally to systems and methods for reducing trailing vortices and reducing noise generated by side edges of aircraft flight control surfaces or tips of airfoils or rotating blades. Background technique [0004] Over the years, strict noise controls have resulted in inefficient air traffic and reduced airport productivity. At many airports, current capacity is largely governed by operating hours, often limiting mainly daytime hours and thus limiting noise pollution at night. Therefore, noise reduction in airport environments has become a priority area in the aerospace transportation industry. Engine and airframe components generate noise during takeoff, approach, and landing. With the advent of high bypass ratio engines, signifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C9/16B64C9/38
CPCY02T50/162B64C23/06Y02T50/10B64C21/08B64C9/38B64C2230/04B64C2230/06B64C21/04
Inventor A·施米勒维驰A·胡达多斯特
Owner THE BOEING CO
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