Experimental study of co-flow jet airfoil performance enhancement using discrete jets

Bertrand P E Dano, GeCheng Zha, Michael Castillo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

24 Citations (Scopus)

Abstract

This paper demonstrates a new performance enhancement methodology for Co-Flow Jet (CFJ) airfoils using discrete injection jets. This research is motivated by the hypothesis that a discrete CFJ (DCFJ) airfoil will generate both streamwise and spanwise vortex structures to achieve more effective turbulent mixing than an open slot CFJ airfoil. Aerodynamic forces and DPIV measurements show that the DCFJ airfoil can achieve up to a 250% increase of maximum lift, and simultaneously generates a tremendous thrust. Nearly 80% of the injection momentum is converted to drag reduction, which indicates that CFJ airfoils are highly energy efficient. The stall angle of attack is also significantly increased. In other words, a DCFJ airfoil is a high lift system and at the same time is also a high thrust propulsion system with low energy expenditure. Best performances are achieved with small discrete holes and large obstruction factor. Power consumption is analyzed and is found to be low compared with the performance gain. Thus, the DCFJ airfoil concept appears to be very promising for the development of integrated airframe-propulsion systems and rotorcraft systems with high performance and high efficiency.

Original languageEnglish
Title of host publication49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
StatePublished - Dec 6 2011
Event49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Orlando, FL, United States
Duration: Jan 4 2011Jan 7 2011

Other

Other49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
CountryUnited States
CityOrlando, FL
Period1/4/111/7/11

Fingerprint

Airfoils
Propulsion
Drag reduction
Airframes
Angle of attack
Aerodynamics
Momentum
Vortex flow
Electric power utilization

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Dano, B. P. E., Zha, G., & Castillo, M. (2011). Experimental study of co-flow jet airfoil performance enhancement using discrete jets. In 49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition [AIAA-2011-941]

Experimental study of co-flow jet airfoil performance enhancement using discrete jets. / Dano, Bertrand P E; Zha, GeCheng; Castillo, Michael.

49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. 2011. AIAA-2011-941.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dano, BPE, Zha, G & Castillo, M 2011, Experimental study of co-flow jet airfoil performance enhancement using discrete jets. in 49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition., AIAA-2011-941, 49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, Orlando, FL, United States, 1/4/11.
Dano BPE, Zha G, Castillo M. Experimental study of co-flow jet airfoil performance enhancement using discrete jets. In 49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. 2011. AIAA-2011-941
Dano, Bertrand P E ; Zha, GeCheng ; Castillo, Michael. / Experimental study of co-flow jet airfoil performance enhancement using discrete jets. 49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. 2011.
@inproceedings{05a7536cef044a7da85f09542b7c2904,
title = "Experimental study of co-flow jet airfoil performance enhancement using discrete jets",
abstract = "This paper demonstrates a new performance enhancement methodology for Co-Flow Jet (CFJ) airfoils using discrete injection jets. This research is motivated by the hypothesis that a discrete CFJ (DCFJ) airfoil will generate both streamwise and spanwise vortex structures to achieve more effective turbulent mixing than an open slot CFJ airfoil. Aerodynamic forces and DPIV measurements show that the DCFJ airfoil can achieve up to a 250{\%} increase of maximum lift, and simultaneously generates a tremendous thrust. Nearly 80{\%} of the injection momentum is converted to drag reduction, which indicates that CFJ airfoils are highly energy efficient. The stall angle of attack is also significantly increased. In other words, a DCFJ airfoil is a high lift system and at the same time is also a high thrust propulsion system with low energy expenditure. Best performances are achieved with small discrete holes and large obstruction factor. Power consumption is analyzed and is found to be low compared with the performance gain. Thus, the DCFJ airfoil concept appears to be very promising for the development of integrated airframe-propulsion systems and rotorcraft systems with high performance and high efficiency.",
author = "Dano, {Bertrand P E} and GeCheng Zha and Michael Castillo",
year = "2011",
month = "12",
day = "6",
language = "English",
booktitle = "49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition",

}

TY - GEN

T1 - Experimental study of co-flow jet airfoil performance enhancement using discrete jets

AU - Dano, Bertrand P E

AU - Zha, GeCheng

AU - Castillo, Michael

PY - 2011/12/6

Y1 - 2011/12/6

N2 - This paper demonstrates a new performance enhancement methodology for Co-Flow Jet (CFJ) airfoils using discrete injection jets. This research is motivated by the hypothesis that a discrete CFJ (DCFJ) airfoil will generate both streamwise and spanwise vortex structures to achieve more effective turbulent mixing than an open slot CFJ airfoil. Aerodynamic forces and DPIV measurements show that the DCFJ airfoil can achieve up to a 250% increase of maximum lift, and simultaneously generates a tremendous thrust. Nearly 80% of the injection momentum is converted to drag reduction, which indicates that CFJ airfoils are highly energy efficient. The stall angle of attack is also significantly increased. In other words, a DCFJ airfoil is a high lift system and at the same time is also a high thrust propulsion system with low energy expenditure. Best performances are achieved with small discrete holes and large obstruction factor. Power consumption is analyzed and is found to be low compared with the performance gain. Thus, the DCFJ airfoil concept appears to be very promising for the development of integrated airframe-propulsion systems and rotorcraft systems with high performance and high efficiency.

AB - This paper demonstrates a new performance enhancement methodology for Co-Flow Jet (CFJ) airfoils using discrete injection jets. This research is motivated by the hypothesis that a discrete CFJ (DCFJ) airfoil will generate both streamwise and spanwise vortex structures to achieve more effective turbulent mixing than an open slot CFJ airfoil. Aerodynamic forces and DPIV measurements show that the DCFJ airfoil can achieve up to a 250% increase of maximum lift, and simultaneously generates a tremendous thrust. Nearly 80% of the injection momentum is converted to drag reduction, which indicates that CFJ airfoils are highly energy efficient. The stall angle of attack is also significantly increased. In other words, a DCFJ airfoil is a high lift system and at the same time is also a high thrust propulsion system with low energy expenditure. Best performances are achieved with small discrete holes and large obstruction factor. Power consumption is analyzed and is found to be low compared with the performance gain. Thus, the DCFJ airfoil concept appears to be very promising for the development of integrated airframe-propulsion systems and rotorcraft systems with high performance and high efficiency.

UR - http://www.scopus.com/inward/record.url?scp=82555185374&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=82555185374&partnerID=8YFLogxK

M3 - Conference contribution

BT - 49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

ER -