article · 2019
Compound Helicopter X3 in High-Speed Flight: Correlation of Simulation and Flight Test
Constantin Öhrle, Airbus Helicopters, Martin Embacher, Felix Frey, Jakob Thiemeier, Manuel Keßler, Ewald Krämer, Paul Cranga, Paul Eglin
Cited by 5Abstract and details only
Abstract
This work presents the correlation of simulation results and flight test data for a high-speed (V =220kts), high advance ratio (μ > 0.5) flight of the compound helicopter X3. The simulation tool chain consists of state-of-the-art coupling between the computational fluid dynamics (CFD) code FLOWer and the comprehensive analysis (CA) tool HOST. By applying a free-flight trim procedure, the experimental flight state is accurately represented in the simulation. The deviations of most trim controls is below 1° and the maximum deviation is less than 1.4°. The analysis of the high fidelity CFD results illustrates key features of the flow physics at this high advance ratio, such as wake interactions, reverse flow and advancing side loading. The correlation of rotor dynamics data between simulation and flight test is favorable. Good accordance is demonstrated for flap bending moments, torsion moments and pitch link loads. In contrast, the correlation is weaker for the chord bending moments for which it is shown that the interblade damper and drive train model mostly determine the structural loads.
Cite this paper
Öhrle, C., Helicopters, A., Embacher, M., Frey, F., Thiemeier, J., Keßler, M., Krämer, E., Cranga, P., & Eglin, P. (2019). Compound Helicopter X3 in High-Speed Flight: Correlation of Simulation and Flight Test. https://doi.org/10.4050/f-0075-2019-14566
Öhrle, Constantin, et al. “Compound Helicopter X3 in High-Speed Flight: Correlation of Simulation and Flight Test.” 2019, pp. 1–18, https://doi.org/10.4050/f-0075-2019-14566.
Öhrle, Constantin, Airbus Helicopters, Martin Embacher, Felix Frey, Jakob Thiemeier, Manuel Keßler, Ewald Krämer, Paul Cranga, and Paul Eglin. 2019. “Compound Helicopter X3 in High-Speed Flight: Correlation of Simulation and Flight Test.” https://doi.org/10.4050/f-0075-2019-14566.
Öhrle, C. et al. (2019) ‘Compound Helicopter X3 in High-Speed Flight: Correlation of Simulation and Flight Test’. Available at: https://doi.org/10.4050/f-0075-2019-14566.
@article{ohrle2019compound,
title = {{Compound Helicopter X3 in High-Speed Flight: Correlation of Simulation and Flight Test}},
author = {Öhrle, Constantin and Helicopters, Airbus and Embacher, Martin and Frey, Felix and Thiemeier, Jakob and Keßler, Manuel and Krämer, Ewald and Cranga, Paul and Eglin, Paul},
pages = {1--18},
year = {2019},
doi = {10.4050/f-0075-2019-14566}
}Made from the index record. Check names, capitalisation and page numbers against the paper. Need another style? AI for Research has over 10,000.