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Title: Surface velocities and temperature changes for C-130, C-141, and C-5A exhaust blasts and C-5A wing-tip vortex
Authors: United States. Army Materiel Command.
Carr, James W.
Keywords: Aircraft
Exhaust blast
Wing tip vortices
Aircraft exhaust emissions
Publisher: Soils and Pavements Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: Miscellaneous Paper
Abstract: This report describes a series of field investigations conducted to determine exhaust-blast velocities and temperatures at the ground level for various aircraft and the wing-tip vortex velocity of the C-5A. Measurements of exhaust-blast velocities and temperature rise during static conditions were collected for C-130, C-141, and C-5A aircraft. Taxi, breakaway, and lift-off tests were conducted with the C-141 and C-5A to record velocity during actual aircraft operations. Wind velocity created by the wing-tip vortex of the C-5A was recorded during actual aircraft operations. Results of these tests indicate that temperature increases from engine exhaust blasts are not sufficient to cause detrimental effects on runway surfacing in use to date. Maximum temperature increases due to exhaust blast were 180 deg Fahrenheit (F) for the C-130, 90 deg F for the C-141, and 85 deg F for the C-5A. Operations of C-141 and C-5A produced exhaust-blast velocities at the ground surface of 120 and 135 mph, respectively. These velocities are sufficient to possibly cause uplift of various mat panels presently in use. NOTE: This file is large. Allow your browser several minutes to download the file.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Miscellaneous Paper

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