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특허 상세정보

Angle of attack sensor using inverted ratio of pressure differentials

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G01C-021/00   
미국특허분류(USC) 73/180 ; 73/178R
출원번호 US-0741955 (1991-08-08)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 16  인용 특허 : 0
초록

An angle of attack sensor is provided with ports for sensing flow angles in desired planes based upon differential pressure at the ports when a longitudinal or reference axis of the sensor changes relative to the flow stream. Impact pressure is also measured with the same probe, or with a separate probe, and the angle of attack is calculated by subtracting the pressures at the angle sensitive ports, and dividing by the measured impact pressure (qcm). At higher angles of attack, the denominator qcm approaches and passes through zero. When this quantity, q...

대표
청구항

An apparatus for determining angles of attack across a substantial range comprising: means for measuring pressures which vary as a function of angle of attack and for providing a first signal that is a function of the difference of such pressures; means for providing a second signal which is a function of a measured pitot pressure and a measured static pressure; means for determining when the second signal is at a selected value different from zero; means for providing a ratio indicative of angles of attack across a first portion of the substantial range...

이 특허를 인용한 특허 피인용횟수: 16

  1. Frantz, James B.. Apparatus and method for determining information for aircraft. USP2005096940425.
  2. Frantz James B.. Apparatus and method for measuring and displaying angular deviations from angle of zero lift for air vehicles. USP2001086271769.
  3. Benning, Kevin J.; Willcox, Charles R.. Aspirated enhanced total air temperature probe. USP2012018104955.
  4. Alwin, Steven Floyd; Cronin, Dennis James; Skarohlid, Mark Charles. Dual-channel electronic multi-function probes and methods for realizing dissimilar and independent air data outputs. USP2003126668640.
  5. Cronin, Dennis J.; Amerson, Thomas D.; Foster, Roger D.; Alwin, Steve F.; Skarohlid, Mark C.. Error detection and fault isolation for multi-function air data probes and systems. USP2004076761057.
  6. Hongerholt,Derrick David; Cronin,Dennis James. Fault isolation method and apparatus in artificial intelligence based air data systems. USP2007087257470.
  7. Alwin, Steve F.; Cronin, Dennis J.; Foster, Roger D.. Iterative method of aircraft sideslip compensation for multi-function probe air data systems. USP2003076594559.
  8. Herr, Stefan; Leclair, Ryan Michael; Winslow, Christopher; Simpson, Alexander; Haertel, Carlos; Maeder, Thierry. Method and apparatus for measuring air flow condition at a wind turbine blade. USP2013048408871.
  9. Schauer,Travis Jon; Hongerholt,Derrick David; Cronin,Dennis James. Method and apparatus for obtaining improved accuracy and range for air data parameters inferred from independent measurements of interdependent pressures. USP2007057213454.
  10. Foster Roger D.. Method of and apparatus for using an alternate pressure to measure mach number at high probe angles of attack. USP2001106305218.
  11. Cronin, Dennis J.; Alwin, Steve F.. Method of reducing total temperature errors and multi-function probe implementing same. USP2003046543298.
  12. Glenney, Kevin. Method to calculate sideslip angle and correct static pressure for sideslip effects using inertial information. USP2003056561020.
  13. Thomas,Steven H.. Methods and system for determining angles of attack and sideslip using flow sensors. USP2008057377159.
  14. Cronin,Dennis J.; Drutowski,Karl G.; Mack,Andrew P.. Multi-function air data probes employing neural networks for determining local air data parameters. USP2008057379839.
  15. Cronin, Dennis J.; Foster, Roger D.. Multi-function air data probes using neural network for sideslip compensation. USP2003086604029.
  16. Cronin, Dennis J.; Amerson, Thomas D.. Sideslip correction for a multi-function three probe air data system. USP2003086609421.