S. Kuzmina, F. Ishmuratov, M. Zichenkov, V. Kuzmin, J. Schweiger

This paper presents a review of active aeroelastic aircraft design concepts in the past and in the nowadays emphasizing the following areas: aeroelastic characteristics associated with all-movable surfaces, advantages of the adaptive attachment stiffness concept for all-movable surfaces and safety aspects for the concept. The numerical and experimental activities performed on the dynamically scaled demonstrator by TsAGI as a partner (subcontractor) of the 3AS Project are also represented. The conventional vertical tail with rudder, which is fixed at the root, is replaced by a smaller tail, which can be rotated about the spanwise axis. The objective of the Active Aeroelastic All-Movable Vertical Tail (AAAMVT) concept is to develop and validate novel approaches for increasing the effectiveness of vertical tail surface through the use of an adaptive attachment. The European Research Aeroelastic Model (EuRAM) demonstrator, a 4-engine wide body transport, 1:10 length scale aeroelastic wind tunnel model, span=5.7m, mass=200kg, has been designed and fabricated to test the AAAMVT concept. Finite Element (FE) models of the traditional vertical tail with rudder, new all-movable fin and of the complete EuRAM airplane were created for multidisciplinary optimization and analysis. In addition to the FE models (in NASTRAN format), the domestic software ARGON, which is based on continuum plates, was used for the design and optimization of the shape and attachment stiffness of the vertical tail. Experimental activity was performed in TsAGI wind tunnels T-103 and T-104. The ARGON code has been used also to follow experiments for the purpose of both predicting the results and to update analytical models. Updating mathematical models of an elastic structure are carried out at different stages of investigation on the base of stiffness measurements, Ground Vibration Tests (GVT) and wind tunnel tests. Such an integrated approach allows validity of the results to be provided.

International Forum on Aeroelasticity and Structural Dynamics, 2005, München

Conference Paper

englisch

21,0 x 29,7 cm, 12 Seiten

DGLR-Bericht, 2005, 2005-04, International Forum on Aeroelasticity and Structural Dynamics 2005; S.1-12; 2005; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

in getr. Zählung;

aeroelasticity, flutter

Bibliothek

2005