Empirical Inflow Ratio Adjustment for Hovering Open Rotors with Experimental Validation

2025-01-0162

To be published on 05/02/2025

Event
AeroTech Conference & Exhibition
Authors Abstract
Content
This study presents empirical modifications of Blade Element Momentum Theory (BEMT) to improve rotor performance prediction for open rotors in hovering conditions. The empirical adjustments were made to the inflow ratio, factoring in the real rotor wake area and estimated induced power losses. A comparison between experimental data and two analytical models, one using an empirical inflow formula and the other a theoretical formula (classical BEMT), was conducted for two rotors. The empirical inflow model demonstrated superior accuracy in predicting thrust and torque. These modifications are applied to the inflow ratio by accounting for the actual rotor wake area and estimated induced power losses. The findings highlight the potential for more accurate performance prediction through the integration of empirical data into theoretical frameworks.
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Citation
Dayhoum, A., Ramirez-Serrano, A., and Martinuzzi, R., "Empirical Inflow Ratio Adjustment for Hovering Open Rotors with Experimental Validation," SAE Technical Paper 2025-01-0162, 2025, .
Additional Details
Publisher
Published
To be published on May 2, 2025
Product Code
2025-01-0162
Content Type
Technical Paper
Language
English