Accession Number : AD0718122

Title :   A Wind Tunnel Investigation of Jets Exhausting into a Crossflow. Volume I. Test Description and Data Analysis.

Descriptive Note : Technical rept.,

Corporate Author : NORTHROP CORP HAWTHORNE CALIF AIRCRAFT DIV

Personal Author(s) : Fricke,Lynn B. ; Wooler,Peter T. ; Ziegler,Henry

Report Date : DEC 1970

Pagination or Media Count : 448

Abstract : A low speed wind tunnel test of a four-foot diameter circular plate model with up to three exhausting jets was conducted to determine surface static pressure distributions, jet paths, and jet decay characteristics in the presence of a crossflow. Data were obtained for the one-jet configuration with the jet exiting at a number of angles to the plate and at various velocity ratios and sideslip angles. Two-jet arrangements were tested with the jets exiting normal to the plate for three different spacings between the two jets and at a number of velocity ratios and sideslip angles. Three-jet configuration data were obtained with the jets exiting normal to the plate for a number of velocity ratios and sideslip angles. As a result of this investigation, several conclusions are deduced pertaining to the interaction of multiple jets exhausting into a crossflow. The test model, instrumentation, test procedure, and reduction and accuracy of the test data are discussed in this volume. A summary and discussion of the test results are also presented. (Author)

Descriptors :   (*JET MIXING FLOW, INTERFERENCE), (*EXHAUST GASES, JET MIXING FLOW), (*VERTICAL TAKEOFF AIRCRAFT, NOZZLE GAS FLOW), FLAT PLATE MODELS, WIND TUNNEL MODELS, FLOW FIELDS, CURVE FITTING, PRESSURE, DATA PROCESSING, TEST METHODS, FLOW VISUALIZATION, INTERACTIONS, SIDESLIP

Subject Categories : Aerodynamics
      V/STOL

Distribution Statement : APPROVED FOR PUBLIC RELEASE