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

Image Number 4 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
Signal processor and signal processing method
Techniques for accessing a parallel database system via external programs using vertical and/or horizontal partitioning
Using interrupted through-silicon-vias in integrated circuits adapted for stacking
Epoxy composition for encapsulating an optical semiconductor element
Rear body panel cover for a motor vehicle
Case for electronic device
Method of treating cancer using a survivin inhibitor
  Randomly Featured Patents
Mixtures of alkylated methylolated 4,5-dihydroxy-imidazolidin-2-ones
N-fluorosulfonimides, process for their production, as well as their use as fluorinating agents
Circular knitting machine with replaceable knitting head
Integrated or intrapackage capability for testing electrical continuity between an integrated circuit and other circuitry
Rolling shutter for wall or roof openings, especially in connection with turnable roof window
Cleaning implement comprising a removable cleaning pad having multiple cleaning surfaces
High speed image acquisition system and method of processing and decoding bar code symbol
Method and device for monitoring movement of mirrors in a MEMS device
Electrostatic discharge circuit layout