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Variable geometry ducted fans and related methods

A geometric shape, ducted fan technology, applied in the field of ducted fans, can solve problems such as aerodynamic efficiency damage

Active Publication Date: 2021-02-12
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thus, the aerodynamic efficiency of both flight modes is compromised

Method used

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  • Variable geometry ducted fans and related methods
  • Variable geometry ducted fans and related methods
  • Variable geometry ducted fans and related methods

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Embodiment Construction

[0022] The following detailed description refers to the accompanying drawings, which illustrate specific examples of implementations or implementations described in the present disclosure. Other examples having different structures and operations do not depart from the scope of the present disclosure. The same reference numerals may refer to the same elements or components in different drawings.

[0023] exist Figure 14 In, with reference to the above mentioned, the solid lines (if any) connecting the various elements and / or components may represent mechanical, electrical, fluid, optical, electromagnetic and other couplings and / or the above-mentioned The combination. As used herein, "coupled" means directly as well as indirectly associated. For example, component A may be directly associated with component B, or may be indirectly associated with component B, such as via another component C. FIG. It is to be understood that not all relationships between various disclosed e...

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Abstract

The present application discloses a variable geometry ducted fan and a method for increasing the aerodynamic efficiency of an aircraft in vertical and horizontal flight modes using a variable geometry ducted fan, the variable geometry The ducted fan may include: an air duct having a longitudinal axis, the air duct including an inlet of the variable geometry ducted fan; a fan rotatably mounted within the air duct downstream of the inlet, the fan including fan blades defining a fan area; and a variable area nozzle coupled to the air duct downstream of the fan, the variable area nozzle including a discharge portion of the variable geometry ducted fan having a variable discharge area.

Description

technical field [0001] The present disclosure relates generally to ducted fans (ducted fans) for air vehicles (aircraft, aircraft), and more particularly, to vertical take-off and landing (vertical take-off and landing, vertical take-off and landing (VTOL) fans) ) Variable geometry ducted fans for aerial vehicles. Background technique [0002] The ducted fan air vehicle may include at least one ducted fan, and an engine for driving the fan located inside an air duct of the ducted fan. A ducted fan aerial vehicle may have forward flight and static hover capabilities. For example, ducted fans are known to be used in vertical take-off and landing ("VTOL") aerial vehicles. However, while ducted fans can achieve both horizontal and vertical flight, conventional designs require compromises of design features for each flight mode (e.g., horizontal and vertical flight) in order to meet the overall Aerodynamic performance requirements. A number of constraints preclude a design th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64D29/02B64C29/00
CPCB64C29/00B64D29/02B64D33/04B64D35/04B64C11/001B64C29/0033F05B2240/123F05B2250/02F01D25/24F04D19/00F02K1/12B64C7/02F04D19/002F04D29/547F04D29/563
Inventor 罗伯特·F·马西奥莱克
Owner THE BOEING CO