Some Effects of Fin Leading-edge Shape on Aerodynamic Heating at Mach Number 2.0 at a Stagnation Temperature of about 2,600 Degrees R PDF Download

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Some Effects of Fin Leading-edge Shape on Aerodynamic Heating at Mach Number 2.0 at a Stagnation Temperature of about 2,600 Degrees R

Some Effects of Fin Leading-edge Shape on Aerodynamic Heating at Mach Number 2.0 at a Stagnation Temperature of about 2,600 Degrees R PDF Author: William M. Bland
Publisher:
ISBN:
Category : Aerodynamic heating
Languages : en
Pages : 15

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Book Description
Three un-instrumented tapered magnesium fins with the leading edges swept back 17 degrees have been tested in an ethylene-heated high-temperature jet at the Langley Pilotless Aircraft Research Station at Wallops Island, Virginia. These tests were made to investigate some effects of leading-edge diameter and leading-edge shape on the aerodynamic heating by noting the time for melting to begin on the fins. Results of these tests, which were conducted at a Mach number of 2.0 for stagnation temperatures in the neighborhood of 2,600 degrees R, indicate that increasing the diameter of the cylindrical leading edge increased the time required for melting to start. This increase was greater, probably because of conduction effects, than that predicted by relating the time to melt inversely with the square root of leading-edge diameter. Also, the model with the flat-face leading edge lasted 1.39 times as long as the model with about the same size cylindrical leading edge.