Multi-directional, three component velocity measurement pressure

Details Multi-directional, three component velocity measurement pressure Multi-directional, three component velocity measurement pressure

1998-01-12

1999-07-27

Felber, Joseph L.

Measuring and testing

Wind tunnel: aerodynamic wing and propeller study

738665, G01M 902, G01M 906

Patent

active

059293314

ABSTRACT:
The development of a nearly-omni-directional pressure probe for three-velocity-component and pressure measurements is described, with particular focus on the techniques and technology employed in probe construction, calibration, electronic interfacing and frequency-response study. The device eliminates the velocity directionality limitations of current multi-hole probes and makes a valuable, rugged tool for use in complex 3-D flow mapping and aerodynamic design and evaluation, in basic research as well as industrial development settings. The probe performance is demonstrated in a flowfield with flow reversal downstream of a backward-facing step. The probe provides low-frequency response capabilities. The probe's main element is a multi-pressure port spherical head, which may include eighteen ports. Fiber optic interferometry techniques may be incorporated to significantly increase frequency response.

REFERENCES:
patent: 3699811 (1972-10-01), Maiden et al.
patent: 5423209 (1995-06-01), Nakaya et al.
Sellers, III, et al., "The Basic Aerodynamics Research Tunnel--A Facility Dedicated to Code Validation," AIAA-88-1997, AIAA 15th Aerodynamic Testing Conference, May 18-20, 1988, pp. 1-12.
Zilliac, "Calibration of Seven-Hole Pressure Probes for Use in Fluid Flows with Large Angularity," NASA Technical Memorandum 102200, National Aeronautics and Space Administration--Ames Research Center, Dec., 1989, 42 pages.
Rediniotis, et al., "The Seven-Hole Probe: Its Calibration and Use," (invited paper), Forum on Instructional Fluid Dynamics Experiments, vol. 152, Jun., 1993, pp. 21-26.
Rediniotis, et al., "Dynamic Pitch-Up of a Delta Wing," AIAA Journal, vol. 32, No. 4, Apr., 1994, pp. 716-725.
Huston, "Accuracy of Airspeed Measurements and Flight Calibration Procedures," National Advisory Committee for Aeronautics, Technical Note No. 1605, pp. 1-80, Date Unknown.
Galls, et al., "Development of an Interactive, Real-Time, Multimedia Flow-Diagnostics Laboratory," Department of Aerospace Engineering Texas A&M University, 34th Aerospace Sciences Meeting & Exhibit, Jan. 15-18, 1996, pp. 1-11.
Atkins, et al., "Fiber-Optic, In-Cylinder Pressure Sensor Developed," Diesel & Gas Turbine Worldwide Product Report, Apr., 1995, 2 pages.

Affiliated with

Also associated with

Rating

Multi-directional, three component velocity measurement pressure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-directional, three component velocity measurement pressure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-directional, three component velocity measurement pressure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-880652