Read A Parametric Experimental Investigation of a Scramjet Nozzle at Mach 6 with Freon and Argon or Air Used for Exhaust Simulation

A Parametric Experimental Investigation of a Scramjet Nozzle at Mach 6 with Freon and Argon or Air Used for Exhaust Simulation

National Aeronautics and Space Administration

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Description:A parametric experimental investigation of a scramjet nozzle was conducted with a gas mixture used to simulate the scramjet engine exhaust flow at a free-stream Reynolds number of approximately 6.5 x 10(exp 6) per foot. External nozzle surface angles of 16, 20, and 24 deg were tested with a fixed-length ramp and for cowl internal surface angles of 6 and 12 deg. Pressure data on the external nozzle surface were obtained for mixtures of Freon and argon gases with a ratio of specific heats of about 1.23, which matches that of a scramjet exhaust. Forces and moments were determined by integration of the pressure data. Two nozzle configurations were also tested with air used to simulate the exhaust flow. On the external nozzle surface, lift and thrust forces for air exhaust simulation were approximately half of those for Freon-argon exhaust simulation and the pitching moment was approximately a third. These differences were primarily due to the difference in the ratios of specific heats between the two exhaust simulation gases. A 20 deg external surface angle produced the greatest thrust for a 6 deg cowl internal surface angle. A flow fence significantly increased lift and thrust forces over those for the nozzle without a flow fence. Cubbage, James M. and Monta, William J. Langley Research Center EXHAUST FLOW SIMULATION; EXHAUST GASES; EXHAUST NOZZLES; FLOW DISTRIBUTION; NOZZLE FLOW; SUPERSONIC COMBUSTION RAMJET ENGINES; ARGON; FREON; GAS FLOW; HYPERSONIC SPEED; LIFT; PITCHING MOMENTS; THRUST...We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with A Parametric Experimental Investigation of a Scramjet Nozzle at Mach 6 with Freon and Argon or Air Used for Exhaust Simulation. To get started finding A Parametric Experimental Investigation of a Scramjet Nozzle at Mach 6 with Freon and Argon or Air Used for Exhaust Simulation, you are right to find our website which has a comprehensive collection of manuals listed.
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Pages: 110

Format: PDF, EPUB & Kindle Edition

Publisher: Createspace Independent Publishing Platform

Release: 2018

ISBN: 1722905980

Description: A parametric experimental investigation of a scramjet nozzle was conducted with a gas mixture used to simulate the scramjet engine exhaust flow at a free-stream Reynolds number of approximately 6.5 x 10(exp 6) per foot. External nozzle surface angles of 16, 20, and 24 deg were tested with a fixed-length ramp and for cowl internal surface angles of 6 and 12 deg. Pressure data on the external nozzle surface were obtained for mixtures of Freon and argon gases with a ratio of specific heats of about 1.23, which matches that of a scramjet exhaust. Forces and moments were determined by integration of the pressure data. Two nozzle configurations were also tested with air used to simulate the exhaust flow. On the external nozzle surface, lift and thrust forces for air exhaust simulation were approximately half of those for Freon-argon exhaust simulation and the pitching moment was approximately a third. These differences were primarily due to the difference in the ratios of specific heats between the two exhaust simulation gases. A 20 deg external surface angle produced the greatest thrust for a 6 deg cowl internal surface angle. A flow fence significantly increased lift and thrust forces over those for the nozzle without a flow fence. Cubbage, James M. and Monta, William J. Langley Research Center EXHAUST FLOW SIMULATION; EXHAUST GASES; EXHAUST NOZZLES; FLOW DISTRIBUTION; NOZZLE FLOW; SUPERSONIC COMBUSTION RAMJET ENGINES; ARGON; FREON; GAS FLOW; HYPERSONIC SPEED; LIFT; PITCHING MOMENTS; THRUST...We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with A Parametric Experimental Investigation of a Scramjet Nozzle at Mach 6 with Freon and Argon or Air Used for Exhaust Simulation. To get started finding A Parametric Experimental Investigation of a Scramjet Nozzle at Mach 6 with Freon and Argon or Air Used for Exhaust Simulation, you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

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A Parametric Experimental Investigation of a Scramjet Nozzle at Mach 6 with Freon and Argon or Air Used for Exhaust Simulation

A Parametric Experimental Investigation of a Scramjet Nozzle at Mach 6 with Freon and Argon or Air Used for Exhaust Simulation

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