Infrared Radiation Signature of Exhaust Plume from Solid Propellants of Different Energy Characteristics

2011 ◽  
Author(s):  
Weichen Wang ◽  
Zhijun Wei ◽  
Qiao Zhang ◽  
Ningfei Wang ◽  
Yanting Xiong
Keyword(s):  
Infrared Radiation ◽  
Solid Propellants ◽  
Energy Characteristics ◽  
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.

Influence of Afterburning on Infrared Radiation of Liquid Rocket Exhaust Plume

2013 ◽  
Vol 42 (4) ◽  
pp. 480-485
Author(s):  
刘尊洋 LIU Zun-yang ◽  
邵立 SHAO Li ◽  
汪亚夫 WANG Ya-fu ◽  
孙晓泉 SUN Xiao-quan
Keyword(s):  
Infrared Radiation ◽  
Exhaust Plume ◽  
Liquid Rocket ◽  
Rocket Exhaust

THE BURNING RATE OF HIGH-ENERGY MATERIALS CONTAINING METAL FUELS BASED ON AL AND B

2020 ◽  
Author(s):  
A. Korotkikh ◽  
◽  
I. Sorokin ◽  
E. Selikhova ◽  
V. Arkhipov ◽  
...  
Keyword(s):  
Ammonium Nitrate ◽  
Specific Energy ◽  
High Energy ◽  
Solid Propellants ◽  
Amorphous Boron ◽  
Energy Materials ◽  
Energy Characteristics ◽  
High Energy Materials ◽  
Metal Borides ◽  
Active Fuel Binder

An effective method of increasing the energy characteristics of high-energy materials (HEMs) is the use of boron and metal borides powders, which have high values of specific energy released during oxidation and combustion. This study investigates powders of amorphous boron and aluminum borides, which are used in compositions of solid propellants based on ammonium perchlorate, ammonium nitrate, and active fuel-binder.

Influence on Afterburning on Infrared Radiation of Solid Rocket Exhaust Plume

2013 ◽  
Vol 33 (6) ◽  
pp. 0604001
Author(s):  
刘尊洋 Liu Zunyang ◽  
邵立 Shao Li ◽  
汪亚夫 Wang Yafu ◽  
孙晓泉 Sun Xiaoquan
Keyword(s):  
Infrared Radiation ◽  
Exhaust Plume ◽  
Solid Rocket ◽  
Rocket Exhaust
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