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:

1970-12-01

Pagination or Media Count:

448.0

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
• VSTOL

Distribution Statement:

APPROVED FOR PUBLIC RELEASE