This content is not included in your SAE MOBILUS subscription, or you are not logged in.
GMC Aero Astro Body Panels
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 06, 1983 by SAE International in United States
Annotation ability available
The GMC Aero Astro is a C.O.E. (Cab-Over-Engine) Vehicle which incorporates the use of add-on plastic body panels to achieve a more aerodynamicly efficient truck-tractor. These panels are made of low pressure-low modulus unreinforced RIM plastic and FRP (Fiber Rein-forced Plastic) using RTM (Resin Transfer Molding) fabricating techniques to obtain Class ‘A’ surfaces. The RTM process is unique since the reinforcement is integrally molded to the outer skins in a one step operation. The RIM (Reaction Injection Molded) panel is designed to collapse into a low profile sidewall when the dragfoiler is dropped into the lowered position. However, this same panel would have to expand and remain rigid enough to minimize cross wind effects in the raised position.
This paper describes how these panels were developed for the Aero Astro, and how they would negotiate the multi-mission requirements for fuel efficiency.
CitationGregg, W., "GMC Aero Astro Body Panels," SAE Technical Paper 831003, 1983, https://doi.org/10.4271/831003.
- Masson, W.T. Jr. “Wind Tunnel Development of the Dragfoiler - A System for Reducing Tractor-Trailer Aerodynamic Drag” S.A.E. Paper 750705 1975
- Marks, C. H. Buckley, F. T. Jr. Walston, W.H. Jr. “An Evaluation of the Aerodynamic Drag Reductions Produced by Various Cab Roof Farings and a Gap Seal on Tractor-Trailer Trucks” S.A.E. Paper 760105 1976
- Muirhead, Vincent U. “An Investigation of Drag Reduction for Tractor-Trailor Vehicles” NASA Contractor Report 144877 October 1979
- Sovran, G. Morel, T. Mason, W. T. Jr. “Aerodynamic Drag Mechanisms of Bluff Bodies and Road Vehicles” Plenum Publishing Corp. 1978