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Experimental Verification of the Aerodynamics of Stream Thrust Probes
43rd AIAA Aerospace Sciences Meeting and Exhibit
  • Robert S. Hiers III, Arnold Air Force Base, TN
  • James R. Sirbaugh, Arnold Air Force Base, TN
  • Capt Barrett T. McCann, United States Air Force Academy
  • Russell M. Cummings, United States Air Force Academy
  • Cadet Laura S. Luft, United States Air Force Academy
  • Cadet Dimitrios P. Grillos, United States Air Force Academy
Publication Date
1-10-2005
Abstract

Determining the local stream thrust (a vector quantity) from a measured pitot pressure (a scalar quantity) requires either knowledge of the flow direction or a probe shape that compensates for flow direction. This compensation ideally would make the measured pressure directly proportional to the component of momentum along the probe axis. The flow angle sensitivity required to resolve this component of momentum was previously determined theoretically. A proposed probe nose shape was analyzed using computational fluid dynamics (CFD) and was found to produce a flow angle sensitivity close to the required sensitivity. In the current work, the proposed nose shape was tested in a wind tunnel at Mach numbers 1.67, 2.45, and 3.48 at angles of attack from 0 to 15 deg. The test results indicate that the flow angle sensitivity of the proposed nose shape agrees with the required sensitivity to within 1 percent up to a flow angle of 15 deg.

Disciplines
Citation Information
Robert S. Hiers III, James R. Sirbaugh, Capt Barrett T. McCann, Russell M. Cummings, et al.. "Experimental Verification of the Aerodynamics of Stream Thrust Probes" 43rd AIAA Aerospace Sciences Meeting and Exhibit (2005) p. 1 - 8
Available at: http://works.bepress.com/rcumming/48/