J. Mertens

Supersonic transports are very drag sensitive. So laminar flow is an essential technology. It is a prerequisite to achieve long range capability. By reducing fuel burn it allows for reduced size and weight of the aircraft. Transition mechanisms (ALT, CFI, TSI) are as for transonic transports, but at more severe conditions: higher sweep angles, cooled surfaces; higher mode instabilities must be taken into account, although they may not become important below Mach 3. Hitherto there exists worldwide no ground test facility to investigate TSI at the expected cruise Mach numbers between 1.6 and 2.4. A quiet Ludwieg tunnel could be a favourable choice for Europe. But it will require a new design approach including improved theoretical predictions, usage of classical wind tunnels for turbulent flow and flight tests for validation.

First European Forum on Laminar Flow Technology, Hamburg, 1992

Conference Paper

englisch

21,0 x 29,7 cm, 5 Seiten

DGLR-Bericht, 1992, 1992-06, First European Forum on Laminar Flow Technology; S.319-323; 1992; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

aerodynamics, laminar flow

Bestellbar

1992