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Automatic velocity control system for aircraft

一种飞行控制系统、飞行器的技术，应用在控制/调节系统、飞机控制、非电动变量控制等方向，能够解决飞行器乘客不良影响、初始减速恶化等问题，达到减少无益纵向加速、改善效率、增加稳定性的效果

Active Publication Date: 2007-09-26
BELL HELICOPTER TEXTRON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] the combination of positive and negative accelerations caused by the behavior of system 11 creates adverse effects on aircraft occupants
Initial deceleration caused by sustained or momentary gusts worsens under acceleration caused by large undershoots and overshoots of the throttle position

Method used

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  • Automatic velocity control system for aircraft
  • Automatic velocity control system for aircraft
  • Automatic velocity control system for aircraft

Examples

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Embodiment Construction

[0026] The object of the present invention is to obtain an airspeed control system for automatically controlling the airspeed of an aircraft and reducing the longitudinal acceleration caused by turbulence encountered in flight. The system of the present invention utilizes a combination of the airspeed signal and the inertial speed (longitudinal ground speed) signal as a speed feedback signal for the control system when a gust with a longitudinal component is detected. In calm air, steady state airspeed and inertial speed are the same value.

[0027] Referring to the drawings, Figure 4 shows a schematic diagram of a preferred embodiment of the control system of the present invention wherein a selected airspeed is given by an operator or pilot. System 23 is a closed loop feedback system that uses airspeed and inertial speed (ground speed) to determine the proper throttle response to changes in airspeed. In the system shown, the selected airspeed signal is output by a command de...

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Abstract

The invention relates to a molten and cast refractory AZS-type product whose chemical content consists of 15.5 to 22 % by weight ZrO2,10.5 to 15 % by weight SiO2, 1.0 to 2.5 % by weight Na2O+K2O+Li2O and <1 % by weight impurities. Said invention is used for glass furnaces, in particular for the superstructures and roofs thereof.

Description

technical field [0001] The present invention relates generally to the field of flight control systems for aircraft, and in particular to systems for automatically controlling the speed of an aircraft. Background technique [0002] Many modern aircraft have flight control systems for maintaining selected flight parameters at or near selected values. These parameters may include altitude, heading, attitude and / or airspeed, each parameter being maintained by the control system by manipulating the aircraft's flight control system. For example, altitude may be controlled by utilizing flight control surfaces such as elevators or by using throttles to control the airspeed of the aircraft. These flight control systems are typically closed-loop feedback control systems that allow inputs from the control system to respond to changes in controlled parameters. [0003] A typical closed-loop system uses airspeed or inertial speed to control the speed of the aircraft. Airspeed is defin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C19/00
CPCG05D1/0615B64D31/08
Inventor 肯尼思·E·布尔塔凯恩·J·舒尔特
Owner BELL HELICOPTER TEXTRON INC
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