Calculation of exhaust plume structure and emissions of the ER 2 aircraft in the stratosphere

1996 ◽  
Vol 101 (D2) ◽  
pp. 4025-4032 ◽  
Author(s):  
M. R. Anderson ◽  
R. C. Miake-Lye ◽  
R. C. Brown ◽  
C. E. Kolb
Keyword(s):  
Exhaust Plume ◽  
Plume Structure

Exhaust Plume Structure in a Quasi-Steady MPD Accelerator

AIAA Journal ◽  
1974 ◽  
Vol 12 (9) ◽  
pp. 1198-1203 ◽  
Author(s):  
ADAM P. BRUCKNER ◽  
ROBERT G. JAHN
Keyword(s):  
Exhaust Plume ◽  
Plume Structure

Analysis of three-dimensional ducted and exhaust plume flowfields

AIAA Journal ◽  
1978 ◽  
Vol 16 (8) ◽  
pp. 823-830 ◽  
Author(s):  
Sanford M. Dash ◽  
Paul D. DelGuidice
Keyword(s):  
Three Dimensional ◽  
Exhaust Plume

Thrust Measurements using Acoustic Sensing on a Turbofan Engine Exhaust Plume

2021 ◽  
Author(s):  
John Gillespie ◽  
Kevin T. Lowe ◽  
Wing Ng ◽  
Loren Crook ◽  
Victor Oechsle
Keyword(s):  
Engine Exhaust ◽  
Turbofan Engine ◽  
Acoustic Sensing ◽  
Exhaust Plume

Numerical evaluation of the exhaust-direction effects on plume flow and helicopter infrared radiation under hover and cruise statuses

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Zongyao Yang ◽  
Yong Shan ◽  
Jingzhou Zhang
Keyword(s):  
Radiation Intensity ◽  
Infrared Radiation ◽  
Design Methodology ◽  
Main Rotor ◽  
Content Type ◽  
Exhaust Plume ◽  
Ir Signature ◽  
Plume Flow ◽  
The Impact ◽  
Rotational Direction

Purpose This study aims to investigate the effects of exhaust direction on exhaust plume and helicopter infrared radiation in hover and cruise status. Design/methodology/approach Four exhaust modes are concerned, and the external flow field and fuselage temperature field are calculated by numerical simulation. The infrared radiation intensity distributions of the four models in hovering and cruising states are computed by the ray-tracing method. Findings Under the hover status, the exhaust plume is deflected to flow downward after it exhausts from the nozzle exit, upon the impact of the main-rotor downwash. Besides, the exhaust plume shows a “swirling” movement following the main-rotor rotational direction. The forward-flight flow helps prevent the hot exhaust plume from a collision with the helicopter fuselage generally for the cruise status. In general, the oblique-upward exhaust mode provides moderate infrared radiation intensities in all of the viewing directions, either under the hover or the cruise status. Compared with the hover status, the infrared radiation intensity distribution alters somewhat in cruise. Originality/value Illustrating the influences of exhaust direction on plume flow and helicopter infrared radiation and the differences of helicopter infrared radiation under hover and cruise statuses are identified. Finally, an appropriate exhaust mode is proposed to provide a better IR signature distribution.

scholarly journals Crow instability effects on the exhaust plume mixing and condensation

1999 ◽  
Vol 7 ◽  
pp. 66-79 ◽  
Author(s):  
S. Brunet ◽  
F. Garnier ◽  
P. Sagaut
Keyword(s):  
Exhaust Plume ◽  
Crow Instability
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