Reverse thrust in multi-engine propeller aircraft

A multi-engine, engine technology, applied to propellers, aircraft power units, aircraft parts, etc., can solve problems such as uneven reverse thrust, pilot error, and aircraft yaw

Pending Publication Date: 2020-04-21
PRATT & WHITNEY CANADA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this transition is not sufficiently synchronized, reverse thrust may not be generated evenly, which may cause yaw or other undesirable behavior of the aircraft
Traditional methods require careful pilot coordination, but are prone to pilot error and can be complex

Method used

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  • Reverse thrust in multi-engine propeller aircraft
  • Reverse thrust in multi-engine propeller aircraft
  • Reverse thrust in multi-engine propeller aircraft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] refer to figure 1 , shows an aircraft 100 having a fuselage 110 , a pair of wings 140 (or more), an engine 150 , a propeller 160 and a tail 170 . Aircraft 100 may be any suitable aircraft, such as a corporate, private, commercial, etc. aircraft, that includes a plurality of engines 150 and propellers 160 . Collectively, the engine-propeller pair may be referred to as a "powerplant". Fuselage 110 has a cockpit 120 , which may be positioned at any suitable location on aircraft 100 , for example, at the front of fuselage 110 . Cockpit 120 is configured to accommodate one or more pilots who control aircraft 100 through one or more operator controls. Operator controls may include any suitable number of pedals, yokes, steering wheels, center sticks, flight sticks, joysticks, knobs, switches, and the like. Although two engines 150 are shown, it should be understood that aircraft 100 may have any suitable number of engines, such as four, six, eight, etc.

[0034] Engine 150...

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PUM

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Abstract

Herein provided are methods and systems for producing reverse thrust in a multi-engine propeller aircraft, comprising: obtaining, at a first engine controller of a first engine of the aircraft, a first power request for the first engine for producing reverse thrust; determining, at the first engine controller, a first blade angle for a first propeller coupled to the first engine; obtaining, at thefirst engine controller and from a second engine controller of a second engine of the aircraft, a second power request for the second engine and a second blade angle for a second propeller coupled tothe second engine; and when the second power request is indicative of a request for producing reverse thrust and when the first and second blade angles are beyond a predetermined threshold, commanding, via the first engine controller, the first engine to produce reverse thrust based on the first power request.

Description

technical field [0001] The present disclosure relates generally to propeller control, and more particularly to reverse thrust generation via variable pitch propellers. Background technique [0002] A multi-engine propeller aircraft consists of two or more so-called "powerplants", each consisting of two main and distinct components: the engine and the propeller. In general, a multi-engine propeller aircraft will consist of any number of powerplants which may be arranged uniformly on each side of the aircraft fuselage and / or within the fuselage itself. Control of the engines and propellers may be performed separately or collectively via controls or other control structures available in the cockpit of the aircraft. [0003] During certain maneuvers, it may be desirable to have the powerplant produce reverse thrust, that is, thrust generally opposite the heading of the aircraft. In the case of propeller-driven aircraft, this can be achieved by varying the pitch of the propelle...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B64D31/12
CPCB64D31/12B64C11/30
InventorJ.查哈尔C.理希奥D.麦克格拉斯G.津加罗
OwnerPRATT & WHITNEY CANADA CORP