Cheeseman Award Paper: Analyzing Low-speed Rotor Fuselage Interactions a Comparative Study of Simulations and Flight Test Data ON H175

doi:10.4050/F-0081-2025-0424

Unable to log in or get member pricing? Having trouble changing your password?

Please review our Frequently Asked Questions for complete information on these and other common situations.

Vertical Flight Library & Store

CHECKOUT

0 Item(s) In Cart Total: $0.00

Cheeseman Award Paper: Analyzing Low-speed Rotor Fuselage Interactions a Comparative Study of Simulations and Flight Test Data ON H175

Damien Desvigne, Martin Embacher, Airbus Helicopters

https://doi.org/10.4050/F-0081-2025-0424

Abstract:
In this work, comparisons between simulations &measurements in flight are proposed for different low-speed flight conditions out of ground effect on an Airbus Helicopters H175 PT1 rotorcraft equipped with a 5-bladed Spheriflex® rotor. Numerical results have been obtained by full-helicopter unsteady simulations relying on a single-rotor loose coupling approach between the Computational Structure Dynamics & Computational Fluid Dynamics parts, assuming blade elasticity and six degrees-of-freedom trim. One flight condition is tackled with both rigid-blade and elastic-blade modelling so as to highlight the influence of the blade softness on the results. The paper showcases good agreement between the simulation results & flight-test measurements regarding variations of main-rotor collective pitch, airframe attitude angles, rotor power & rotor loads with true airspeed. Airframe download is also numerically analysed.