TY - GEN
T1 - Validation and assesment of lower order aerodynamics based design of Ram Air Turbines
AU - Renganathan, Sudharshan Ashwin
AU - Denney, Russell
AU - Duquerrois, Antoine
AU - Mavris, Dimitri
N1 - Funding Information:
The author is grateful to Labinal Power Systems for funding this work and providing measurements for code validation.
Publisher Copyright:
© 2014 by Sudharshan Ashwin Renganathan, Russell Denney, Antoine Duquerrois, Dimitri Mavris.
PY - 2014
Y1 - 2014
N2 - Ram Air Turbines (RATs) are small-scale wind powered turbines installed in commercial and military aircraft to generate power for in-flight hydraulics and electronics, in the event of total power failure. There is a need for efficient design of RATs that maximizes the power by minimizing weight and cost. The Lifting Line (LL) theory is applied towards the aerodynamic analysis of a 2- bladed RAT and the approach is validated against experimental data. The goal of this paper is to demonstrate the feasibility of the LL theory as an efficient tool for conceptual design of RATs. First, the methodology is validated by reproducing an existing RAT blade design for a known operating condition. Next, off-design conditions are explored for a design point. The validation study demonstrated that the LL theory can predict aerodynamic performance of RATs within 20% up to the transonic regime. Given the simple computational implementation, cheap computational cost and observed level of accuracy the LL theory appears to be an attractive approach towards the conceptual design and design space exploration of RATs. Thus, the paper also investigates the aerodynamic design capabilities of the LL theory, given some constraints and operating condition.
AB - Ram Air Turbines (RATs) are small-scale wind powered turbines installed in commercial and military aircraft to generate power for in-flight hydraulics and electronics, in the event of total power failure. There is a need for efficient design of RATs that maximizes the power by minimizing weight and cost. The Lifting Line (LL) theory is applied towards the aerodynamic analysis of a 2- bladed RAT and the approach is validated against experimental data. The goal of this paper is to demonstrate the feasibility of the LL theory as an efficient tool for conceptual design of RATs. First, the methodology is validated by reproducing an existing RAT blade design for a known operating condition. Next, off-design conditions are explored for a design point. The validation study demonstrated that the LL theory can predict aerodynamic performance of RATs within 20% up to the transonic regime. Given the simple computational implementation, cheap computational cost and observed level of accuracy the LL theory appears to be an attractive approach towards the conceptual design and design space exploration of RATs. Thus, the paper also investigates the aerodynamic design capabilities of the LL theory, given some constraints and operating condition.
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U2 - 10.2514/6.2014-3463
DO - 10.2514/6.2014-3463
M3 - Conference contribution
AN - SCOPUS:84912570028
T3 - 12th International Energy Conversion Engineering Conference, IECEC 2014
BT - 12th International Energy Conversion Engineering Conference, IECEC 2014
PB - American Institute of Aeronautics and Astronautics Inc.
ER -
