Invention Grant
- Patent Title: Control system for controlling propeller aircraft engine during takeoff
- Patent Title (中): 起飞期间螺旋桨飞机发动机控制系统
-
Application No.: US11459756Application Date: 2006-07-25
-
Publication No.: US08414260B2Publication Date: 2013-04-09
- Inventor: James R. Johnson
- Applicant: James R. Johnson
- Applicant Address: US MD
- Assignee: Lockheed Martin Corporation
- Current Assignee: Lockheed Martin Corporation
- Current Assignee Address: US MD
- Agency: Gardner Groff Greenwald & Villanueva, PC
- Main IPC: B64C11/34
- IPC: B64C11/34 ; B64C13/18

Abstract:
A control system and method of controlling a propeller aircraft engine during takeoff limits the amount of engine power developed at the very beginning of the takeoff in order to maximize thrust and minimize rollout distances. The control system limits the amount of power developed by the engine, even in the face of a nominal demand by the pilot for maximum engine power. Instead, the control system provides something significantly less than full power at the beginning of takeoff and gradually increases the power developed by the engine to full power as the airspeed increases. This gradual increase from partial engine power toward full power helps prevent stalling of the propeller, thereby maximizing the effectiveness of the propeller and engine in assisting the aircraft to takeoff quickly. The control system is particularly helpful for taking off from high-altitude runways.
Public/Granted literature
- US20080029653A1 CONTROL SYSTEM FOR CONTROLLING PROPELLER AIRCRAFT ENGINE DURING TAKEOFF Public/Granted day:2008-02-07
Information query