Empennage Wake Filling using Steady Chord-wise Blowing for Propulsive Fuselage Concepts

Master thesis (2022)

Authors

S. Garg Aerospace Engineering

Contributors

L.L.M. Veldhuis Flow Physics and Technology (supervisor 1)
M. van Sluis Flight Performance and Propulsion - Aerospace Engineering (supervisor 1)
A. Gangoli Rao Flight Performance and Propulsion - Aerospace Engineering (supervisor 2)
A.H. van Zuijlen Aerodynamics - Aerospace Engineering (supervisor 2)
Faculty
Aerospace Engineering
Copyright: © 2022 Sparsh Garg
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Published Date

14-04-2022

Language

English

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Faculty

Aerospace Engineering

Abstract

It is the need of the hour to focus research and development towards curbing emissions due to the growing aviation industry. Employing boundary layer Ingesting(BLI) propellers for development of propulsive fuselage concept(PFC) aircraft while utilizing hydrogen as an alternative energy source, is the idea behind project APPU(Advanced Propulsion and Power Unit). However, the empennage wake is detrimental to the propeller. This study uses chord-wise wake blowing technique to fill the empennage wake in order to mitigate the detrimental effects of the wake on the inflow of the aft mounted BLI propeller. A near complete wake filling was observed for the blown configuration, with a 99.7% uniformity in the velocity profiles for the filled empennage wake. The addition to the overall aircraft drag due to the wake blowing system was less than 2 drag counts and a mass flow rate of 0.91-1.23Kg/s was found to be required in the blown cases.