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Aerodynamic Analysis of Helicopter Side Intake Variants by Full Scale Wind Tunnel Measurements

Autor(en): F. Knoth, J.H. You, C. Breitsamter
Zusammenfassung: The work presented in this paper aims at the aerodynamic optimization of engine side air intakes of a lightweight helicopter. For this purpose wind tunnel (W/T) tests are conducted on a novel full scale model of a helicopter fuselage section at the Institute of Aerodynamics and Fluid Mechanics of the Technische Universität München (TUM-AER). The new wind tunnel model includes a duct system, venturi meter and a radial fan to provide engine mass flow rates corresponding to realistic helicopter operation conditions. With 5-hole pressure probes significant trends on the total pressure drop and distortion coefficients are found at the Aerodynamic Interface Plane (AIP) for three different air intakes tested in hover and forward flight conditions. Further investigations are conducted concerning local surface pressure distributions.
Veranstaltung: 41th European Rotorcraft Forum 2015
Medientyp: Conference Paper
Sprache: englisch
Veröffentlicht: DGLR-Bericht, 2016, 2016-01, 41st European Rotorcraft Forum 2015; S.-; 2016; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn
Preis: NA
Stichworte zum Inhalt: air intakes;coefficients;distortion;ducts;fluid mechanics;fuselages;helicopters;hovering;mass flow rate;pressure sensors;scale models;trends;wind tunnel models;wind tunnel tests
Verfügbarkeit: Bestellbar
Veröffentlicht: 2016

Dieses Dokument ist Teil einer übergeordneten Publikation:
41st European Rotorcraft Forum 2015