Aerodynamic and Aeroacoustic Comparison of Optimized High-Speed Propeller Blades, AIAA 2018-4658
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2018

The Boxprop is a high-speed propeller concept intended for aircraft engines, which features blade pairs connected at the tip in order to decrease tip vortex strength, possibly reducing noise and improving aerodynamic performance relative to conventional high-speed propellers. This paper investigates the aerodynamic and aeroacoustic performance of three aerodynamically optimized high speed propellers; a 6-bladed conventional propeller, a 12-bladed conventional propeller, and a 6-bladed Boxprop. Performance results will be be compared for the three designs, with a focus on sectional performance and wake flow characteristics, and will show that the 6-bladed Boxprop performance lies somewhat in-between its 6 and 12-bladed conventional counterparts. The noise level at various observer positions is presented, and shows that the noise roughly follows the values of efficiency for the three propellers, with the Boxprop noise level being higher than the 12-bladed conventional propeller, but lower than the 6-bladed one. The lower blade loading and higher efficiency of the Boxprop relative to the 6-bladed conventional propeller results in slightly lower levels of noise at cruise.

Boxprop

open rotor

propfan

aerodynamics

Ffowcs Williams - Hawkings

CROR

propeller

optimization

acoustic analogy

acoustics

Författare

Alexandre Capitao Patrao

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Daniel Lindblad

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Anders Lundbladh

Chalmers, Mekanik och maritima vetenskaper

Tomas Grönstedt

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

2018 Joint Propulsion Conference, AIAA Propulsion and Energy Forum
Cincinatti, OH, USA,

Innovativ Framdrivning och Motorinstallation

VINNOVA, 2013-07-01 -- 2017-06-30.

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Ämneskategorier

Rymd- och flygteknik

Farkostteknik

Strömningsmekanik och akustik

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

DOI

10.2514/6.2018-4658

Mer information

Senast uppdaterat

2018-07-27