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특허 상세정보

Active control of boundary layer transition and turbulence

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64B-021/00   
미국특허분류(USC) 244/203 ; 244/204 ; 244/130 ; 114/67A
출원번호 US-0838649 (1986-03-11)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 33  인용 특허 : 3
초록

The invention is a boundary flow control system and method which comprises heating elements 24 to trigger boundary layer transition and audio speakers 83 to provide acoustic suppression 51 of boundary layer turbulence 52. The trigger and suppression control are activated by a feedback amplifier 82 which reads boundary layer flow conditions using an anemometer probe 81. The active control of the boundary layer permits delay of flow separation and a reduction in skin friction drag as compared to natural flow conditions.

대표
청구항

A system for active control of boundary layer flow comprising in combination: a flow surface; a plurality of heater strips are embedded in and flush with said flow surface and extending spanwise along said surface in a region of positive pressure gradient for triggering boundary layer transition from laminar to turbulent flow; sensor means disposed on said flow surface for sensing flow oscillations thereon downstream of said triggering means; feedback means connected to said sensor means; and means for controlling the amplitude of turbulent boundary laye...

이 특허를 인용한 특허 피인용횟수: 33

  1. Bonutti, Peter M.. Active drag and thrust modulation system and method. USP2004096793177.
  2. Bonutti, Peter M.. Active drag and thrust modulation system and methods. USP2005126978767.
  3. Bonutti, Peter M.. Active drag modulation system and method. USP2004116824108.
  4. Gölling, Burkhard; Haucke, Frank; Bauer, Matthias; Nitsche, Wolfgang; Peltzer, Inken. Aircraft with a control device. USP2015049014877.
  5. Gölling, Burkhard. Aircraft with wings and a system for minimizing the influence of unsteady flow states. USP2017059656740.
  6. Guida, Nicholas R.. Airflow interrupting devices. USP20190310239606.
  7. Snarski Stephen R.. Device for interactive turbulence control in boundary layers. USP1999085941481.
  8. Ryutaro Yoshino JP. Drag control system for flying machine, process for estimating drag of flying machine, boundary layer control system, and boundary layer control process. USP2002056390417.
  9. Bonutti, Peter M.. Drag modification system. USP2013078482436.
  10. Prince, Troy S; Kolacinski, Richard; Patel, Mehul. Hierarchical closed-loop flow control system for aircraft, missiles and munitions. USP2016049310166.
  11. Prince, Troy S; Kolacinski, Richard; Patel, Mehul. Hierarchical closed-loop flow control system for aircraft, missiles and munitions. USP20181110139209.
  12. Mangalam, Siva M.. Method and system for locating critical flow feature indicators in three dimensional flow regimes. USP2005116963810.
  13. Testi Marco,ITX. Method for interfacing a pilot with the aerodynamic state of the surfaces of an aircraft and body interface to carry out this method. USP2001086273371.
  14. Koroteev, Dmitry Anatolievich; Osiptsov, Andrei Alexandrovich. Method of a formation hydraulic fracturing. USP2015038967251.
  15. Sirovich Lawrence (New York NY) Levich Evgene (Tel-Aviv ILX) Bronicki Lucien Y. (Yavne ILX). Method of and apparatus for controlling turbulence in boundary layer and other wall-bounded fluid flow fields. USP1997015595205.
  16. Narramore, Jimmy Charles. Retractable vortex generator. USP2011027878457.
  17. North, Travis C.; Helberg, Christopher M.; Shelnutt, Austin M.. Skin based system cooling using internal system fan. USP2018029891677.
  18. Hwang Danny P.. Skin friction reduction by micro-blowing technique. USP1998095803410.
  19. Glezer, Ari; Mahalingam, Raghavendran; Heffington, Samuel. Synthetic jet heat pipe thermal management system. USP2009107607470.
  20. Mangalam,Siva M.. System and method for closed loop control of boundary layer shear stress. USP2007127302838.
  21. Mangalam, Arun S.; Mangalam, Siva M.. System and method for control of aeroelasticity effects. USP2012048155794.
  22. Mangalam, Siva M.. System and method for real time determination of unsteady aerodynamic loads. USP2004116826493.
  23. Drack, Lorenz Edwin; Petitjean, Benoit Philippe; Benignos, Jorge Alejandro Carretero; Rangwalla, Akil Abbas; Patil, Pratish. System and methods for reducing wind turbine noise. USP2017039593670.
  24. Pincus Steven M. ; Neidorff Robert A.. System to determine a relative amount of patternness. USP1998065769793.
  25. Drouin, Jr., Donald V.; Schwimley, Scott Lee. Systems and methods for alleviating aircraft loads with plasma actuators. USP2016099446840.
  26. Silkey, Joseph S.; Smereczniak, Philip. Systems and methods for controlling flows with pulsed discharges. USP2014058727286.
  27. Bonutti, Peter M.. Systems for modifying a fluid flow of a vehicle. USP2017029581179.
  28. Duane C. McCormick ; Daniel L. Gysling. Tangentially directed acoustic jet controlling boundary layer. USP2002056390418.
  29. Mahalingam, Raghavendran; Glezer, Ari. Thermal management of batteries using synthetic jets. USP2011108030886.
  30. Bonutti,Peter M.. Traction control system. USP2007067234730.
  31. Bonutti, Peter M.. Ultrasonic communication and drag modification. USP2010077755519.
  32. Bonutti, Peter M.. Ultrasonic drag modulation. USP2011087990287.
  33. Miller Robin Mihekun ; Tunkel Roman N.. Vibration-driven acoustic jet controlling boundary layer separation. USP2000086109566.