Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Systems and methods for a signed magnitude adder in one's complement logic
Light-source control device, light-source control method, image reading device, and image forming apparatus
Switching module and switching synchronization system
Distylium plant named `PIIDIST-II`
Press nut
Integrated wire carrier for electrode array
System and method for providing security in browser-based access to smart cards
  Randomly Featured Patents
X-ray generator employing hemimorphic crystal and ozone generator employing it
Apparatus for changing the tapered rolls of a skew rolling mill
Heat recovery boiler and hot banking releasing method thereof
Video game control unit
Fuel injection method for a direct-injection auto-ignition internal-combustion engine
Integrated fuel pressure regulator and rail assembly
Plastic film wrapper
Method for producing acrylonitrile
Efficient multi-frame motion estimation for video compression
Keep vein open method and injector with keep vein open function