B.E. Humphreys

The ability of an aerofoil surface to achieve and maintain lamiliar flow is impaired by surface and other contamination and it is essential that means are available to negate the effects of contamination in service to ensure that the potential benefits of laminar flow are maintained during the short and long term. The primary contaminants are ice (or frost), insect debris and airborne dust. These and other contaminants are evaluated with respect to their temporal and spatial applicability and to the threat which they present. ln many respects the requirement for combating contamination is similar for both Natural Laminar How (NLF) and surfaces with suction (LFC or HLFC), although each poses different problems with respect to contamination avoidance systems. Methods of ice and insect contamination protection are reviewed with respect to their usefulness and applicability to laminar flow aerofoils. Liquid transpiration systems are a promising method for providing protection against both ice and insect debris. The specific problems and solutions relating to integration of this type of protection system with NLF and LFC are reviewed.

First European Forum on Laminar Flow Technology, Hamburg, 1992

Conference Paper

englisch

21,0 x 29,7 cm, 8 Seiten

DGLR-Bericht, 1992, 1992-06, First European Forum on Laminar Flow Technology; S.262-269; 1992; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

aerodynamics, laminar flow

Bestellbar

1992