Resources Contact Us Home
Aircraft high altitude vertical flight path and speed control system

Image Number 10 for United States Patent #5079711.

A variable bandwidth factor KALT is applied in a total energy control system to obtain a reduction in throttle activity while maintaining system stability. The system has a total energy control loop and an energy distribution control loop. In the former, a net thrust command signal T.sub.c is generated to reduce the total energy error to zero. In the latter, an elevator position command signal .delta.e.sub.c is generated to reduce the energy rate distribution error, i.e. correct the distribution of energy between kinetic energy (speed) and potential energy (altitude). The error signal input into each loop has a flight path component and a speed component. The factor KALT is applied to both components of the total energy error to reduce the bandwidth of the total energy control loop with increasing altitude and thereby reduce throttle activity. The factor KALT is also applied to one of the components of the energy distribution error to prioritize reduction of that component to zero by control of elevator position. Preferably, speed control is prioritized, and energy errors are channeled into short term deviations in altitude.

  Recently Added Patents
Passive charge cord release system for an electric vehicle
Concentration measuring apparatus for hydrogen sulfide in gas flow, and method for determining sulfide ion
Isolated nucleic acid molecule encoding an antibody that reduces GDF-8 activity
Organic semiconductor compound, semiconductor device, solar cell and producing method of organic semiconductor compound
Systems and methods for providing a video playlist
Catalytic pyrolysis using UZM-44 aluminosilicate zeolite
Semiconductor device
  Randomly Featured Patents
Frozen dessert composition
Interconnection resource assignment method for differential current switch nets
Microfiche reader transport system
Light emitting diode
Thrombin-based assay for antithrombin III
Translucent end cap or the like
Stacking and collecting apparatus
Dental X-ray holder for use in endodontics