scholarly journals Optically Transparent Water-Based Wideband Switchable Radar Absorber/Reflector with Low Infrared Radiation Characteristics

2021 ◽  
Author(s):  
Huangyan Li ◽  
HANG Yuan ◽  
Filippo Costa ◽  
Qunsheng Cao ◽  
Wen Wu ◽  
...  
Keyword(s):  
Infrared Radiation ◽  
Radiation Characteristics ◽  
Optically Transparent ◽  
Water Based ◽  
Transparent Water

Transparent water-based UV-curable urethane acrylate ink-jet ink

2021 ◽  
pp. 1-11
Author(s):  
Atasheh Soleimani-Gorgani ◽  
Farhood Najafi ◽  
Fatemeh Mohammadrezaei ◽  
Behzad Shirkavand Hadavand
Keyword(s):  
Urethane Acrylate ◽  
Uv Curable ◽  
Ink Jet ◽  
Water Based ◽  
Transparent Water

Optically transparent microwave scattering reduction metasurface with tunable infrared radiation

2021 ◽  
Vol 114 ◽  
pp. 110911
Author(s):  
Yuzhou Ran ◽  
Lihua Shi ◽  
Yao Ma ◽  
Qi Zhang ◽  
Yun Li ◽  
...  
Keyword(s):  
Infrared Radiation ◽  
Microwave Scattering ◽  
Optically Transparent

scholarly journals Failure mechanics and infrared radiation characteristics of soft coal at various moisture contents

2021 ◽  
Vol 12 (1) ◽  
pp. 1370-1384
Author(s):  
Yiju Tang ◽  
Jing Liu ◽  
Tianxuan Hao ◽  
Fan Li ◽  
Lizhen Zhao
Keyword(s):  
Infrared Radiation ◽  
Radiation Characteristics ◽  
Failure Mechanics ◽  
Moisture Contents ◽  
Soft Coal

An experimental study of infrared radiation characteristics of sandstone in dilatancy process

2020 ◽  
Vol 136 ◽  
pp. 104503
Author(s):  
Kewang Cao ◽  
Liqiang Ma ◽  
Dongsheng Zhang ◽  
Xingping Lai ◽  
Zhitao Zhang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Infrared Radiation ◽  
Radiation Characteristics

scholarly journals Study on a calculation model of infrared radiation characteristics of rocket engine plume

2021 ◽  
Vol 2125 (1) ◽  
pp. 012006
Author(s):  
Nan Wu ◽  
Chengpo Mu ◽  
Yang He ◽  
Huan Liu ◽  
Taiye Liu
Keyword(s):  
Flow Field ◽  
Infrared Radiation ◽  
Rocket Engine ◽  
Calculation Model ◽  
Characteristic Parameters ◽  
Infrared Band ◽  
Radiation Characteristics ◽  
Mid Infrared ◽  
Fast Calculation ◽  
Plume Flow

Abstract In order to study the infrared radiation (IR) characteristics of rocket engine plume in the mid infrared band, a calculation model for IR transfer of rocket engine plume was built. The flow field data are calculated by software FLUENT. Based on HITRAN database, the IR characteristic parameters are calculated after spectral line correction. The Line of Sight (LoS) is used to solve the radiation characteristics in the plume flow field, and the IR characteristics distribution of the plume in the mid infrared band is obtained, which agree well with the results from open literature. The method has the advantages of simple model, less parameters and fast calculation speed in this paper.

Likely effects of standing and lying on the radiating heat load experienced by a resting kangaroo on a summer day

1972 ◽  
Vol 20 (1) ◽  
pp. 17 ◽  
Author(s):  
TJ Dawson
Keyword(s):  
Infrared Radiation ◽  
Heat Load ◽  
The Sun ◽  
Radiation Heat ◽  
Small Tree ◽  
Radiation Characteristics ◽  
Long Wave ◽  
Open Country ◽  
Effective Radiation ◽  
Long Wave Infrared

A study was carried out to examine the effect of posture (standing or lying) on the radiation heat load which would be experienced by a kangaroo resting under a small desert tree during a summer day. Measurements were made to assess the temperature and radiation characteristics in three situations judged to be equivalent to the following: (1) a kangaroo standing in the sun in open country; (2) an animal standing in the shade of a small tree; (3) an animal lying in the same shade. The overall pattern of results was shown by the effective radiation temperature measurements made at midday: 78.3, 57.6, and 52.5C for positions (I), (2), and (3) respectively. The relative contributions of solar and long-wave infrared radiation to the pattern of results are discussed.

Infrared radiation characteristics of liquid oxygen/kerosene rocket engine plume with different number of nozzles

2019 ◽  
Vol 52 (3-4) ◽  
pp. 159-167
Author(s):  
Hong-Hua Cai ◽  
Wan-Sheng Nie ◽  
Ling-Yu Su ◽  
Tian-yi Shi ◽  
Kang-Kang Guo
Keyword(s):  
Infrared Radiation ◽  
Rocket Engine ◽  
Liquid Oxygen ◽  
Radiation Characteristics

The influence of nozzle deflection on fluid dynamic and infrared characteristics of a two-dimensional convergent–divergent vectoring exhaust system

2019 ◽  
Vol 233 (12) ◽  
pp. 4646-4662
Author(s):  
Hao Wang ◽  
Honghu Ji ◽  
Haohao Lu
Keyword(s):  
Mass Flow ◽  
Infrared Radiation ◽  
Deflection Angle ◽  
Thrust Force ◽  
Fluid Dynamic ◽  
Dynamic Performance ◽  
Exhaust System ◽  
Two Dimensional ◽  
Radiation Characteristics ◽  
Significant Information

Superior maneuverability and good infrared stealthy properties are two key points of the future aircraft. A two-dimensional convergent–divergent (2D-CD) vectoring exhaust system can improve the maneuverability of aircrafts and has been widely applied to the latest generation aircrafts. Understanding fluid dynamic and infrared radiation characteristics of the 2D-CD vectoring exhaust systems under different conditions of the nozzle deflection is very crucial, which can provide significant information for the suppression of the infrared radiation property of the 2D-CD vectoring exhaust system. In this paper, by means of computational fluid dynamics, the fluid dynamic and infrared radiation characteristics of the 2D-CD vectoring exhaust system are studied at subsonic cruise status with nozzle deflection angles from 0 to 20°, and the results are compared with those of the baseline axisymmetric exhaust system. The results indicate that the fluid dynamic performance of a properly designed 2D-CD vectoring exhaust system is equivalent to the fluid dynamic performance of the baseline axisymmetric exhaust system. When the nozzle deflection angle is less than 5°, the mass flow and thrust force of the 2D-CD vectoring exhaust system are almost unchanged, and with the increase of the nozzle deflection angles, the mass flow and thrust force decrease rapidly. The thrust force deflection angles lag behind the nozzle deflection angles all the time, and as the nozzle deflection angle increases, the difference between them decreases. The direction of the maximum infrared radiation of the 2D-CD vectoring exhaust system deflects with the deflection of the nozzle, and the mean integrated infrared radiation intensity of the exhaust system decreases with the increase of nozzle deflection angles.

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