Efficient Prediction of Aerodynamic Heating of a High Speed Aircraft for IR Signature Analysis

2019 ◽  
Vol 47 (11) ◽  
pp. 768-778
Author(s):  
Ji-Hyun Lee ◽  
Jun-Hyeok Chae ◽  
Nam-Koo Ha ◽  
Dong-Geon Kim ◽  
Hyun-Sung Jang ◽  
...  
Keyword(s):  
High Speed ◽  
Aerodynamic Heating ◽  
Signature Analysis ◽  
Efficient Prediction ◽  
Ir Signature

Aerospace Thermal-Structural Testing Technology

1997 ◽  
Vol 50 (9) ◽  
pp. 477-498 ◽  
Author(s):  
Earl A. Thornton
Keyword(s):  
High Speed ◽  
Structural Testing ◽  
Aerodynamic Heating ◽  
Heating And Cooling ◽  
Structural Test ◽  
Space Experiments ◽  
Test Technology ◽  
Testing Technology ◽  
Structural Tests ◽  
Structural Boundary

This review article describes aerospace thermal-structural testing technology. It begins with discussions of aerodynamic heating and space radiation heating. The review continues with a general discussion of thermal-structural test technology including heating and cooling, instrumentation, and thermal-structural boundary conditions. Then illustrative thermal structural tests are presented for high speed flight in the atmosphere and flight in space. Experiments conducted in the laboratory as well as flight tests are described. Several experiments are reviewed to demonstrate the diversity of thermal-structural phenomena. This article includes 120 references.

High-Speed Transmission Circuits Signaling in Optical Communication Systems

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
IS Amiri ◽  
Ahmed Nabih Zaki Rashed ◽  
P. Yupapin
Keyword(s):  
Optical Communication ◽  
Communication Systems ◽  
High Speed ◽  
Digital Signals ◽  
Prediction Scheme ◽  
Optical Communication Systems ◽  
Efficient Prediction ◽  
Wide Line ◽  
Protection Devices ◽  
Low Capacitance

AbstractThis paper has outlined high-speed transmission circuits signaling in guided or unguided optical communication systems. An efficient prediction scheme to predict the signal distortion caused by intersymbol interference. As high-speed digital signals exceed many gigabits per second speeds, eye diagrams provide the means to quickly and accurately measure signal quality and system performance. Semiconductor understands the capacitance constraints that designers are faced with when using these high-speed interfaces and offers a wide line of ultra-low capacitance electrical spectral density protection devices that service these interfaces, and the noise can be reduced at the optimum circuit at both bandwidths of 167 MHz, and bandwidth of 200 MHz.

Aerodynamic Heating Numerical Simulation of Terminal-Sensitive Projectile at Deceleration and Despinning Trajectory

2013 ◽  
Vol 376 ◽  
pp. 317-322
Author(s):  
Jun Zhang ◽  
Rong Zhong Liu ◽  
Rui Guo ◽  
Xiao Dong Ma
Keyword(s):  
Numerical Simulation ◽  
High Speed ◽  
Thermal Protection ◽  
Thermal Characteristics ◽  
Simulation Method ◽  
Aerodynamic Heating ◽  
Transient Temperature ◽  
Physical Parameters ◽  
Temperature Distributions ◽  
Infrared Signature

Aero-heating problem severely affects the performance of terminal-sensitive projectile (TSP) when projected out of the carrier capsule by the gunpowder gas at a high speed. In this paper, based on the typical ballistic data and airflow physical parameters at deceleration and despinning trajectory, the aerodynamic thermal characteristics of a TSP was simulated by Fluent, and the transient temperature distributions were obtained under the different flying conditions. Finally, we got stagnation temperatures by the numerical simulations which were similar to those by the engineering evaluation, and demonstrate the effectiveness of the simulation method. The results are valuable to the research of thermal protection and infrared signature of TSP.

The Aero-Thermodynamic Effect Simulation Study of Solid Motor Grain

2013 ◽  
Vol 419 ◽  
pp. 81-85 ◽  
Author(s):  
Wen Geng Pan ◽  
Tao Li ◽  
Guang Rong Bian ◽  
Jin Rong Cao
Keyword(s):  
High Speed ◽  
Aerodynamic Heating ◽  
Thermal Coefficient ◽  
Insulation Layer ◽  
Ansys Software ◽  
Storage Performance ◽  
Thermodynamic Effect ◽  
Environment Temperature ◽  
Infra Red ◽  
Stress Functions

The long-stored missile as a result of environment temperature stress functions and so on, it will cause the missile material aging. For high-speed flight's missile, thermal coefficient of expansion between the different structural and element will be different simultaneously, when the aerodynamic heating will produce, the grain and the thermal insulation layer will also be appeared the crack phenomenon in the influence of expand with heat and contract with cold rules. For the example of some infra-red missile, aero-thermodynamic effect of the missile is carried on the forecast using the ANSYS software simulation, it has the important meaning to analyze the storage performance and failure mechanism of flying missile and so on.

scholarly journals Conceptual design of Blended Wing Body for Future Air Transportation

2022 ◽  
pp. 133-139
Author(s):  
Shruti Dipak Jadhav ◽  
Pawan Hiteshbhai Jethwa ◽  
Shiva Prasad U ◽  
Suresh Kumar M
Keyword(s):  
High Speed ◽  
Lift Coefficient ◽  
High Volume ◽  
Local Area ◽  
Environmental Benefits ◽  
Surface Element ◽  
Aerodynamic Heating ◽  
Load Factor ◽  
Blended Wing Body ◽  
Bypass Ratio

Blended wing body is a fixed wing aircraft which are smoothly blended together with no clear dividing line and no distinct wings also be given a wide Aerofoil shaped body. The future transportation is of aircrafts will incline towards the aerodynamically efficient and capable of carrying large number of passengers over long range and environmental benefits is the main paradigm in the design of aircraft BWB has a high lift to drag ratio which increases the CL max and velocity of the airplane with high load factor and high economy compared with traditional aircraft. Evacuation pressure or the cabin pressurization is the major issues in most of the designs with the minimum aerodynamic lift coefficient and drag coefficient. On the other side of the trend is towards the increasing cruise speed. High speed flow is connected with overcoming of intensive drag rise accruing due to existence of intensive shock, closing local area of supersonic flow. Increase of flight Mach number is possible only by using flow control methods and through affecting the shock increases of aspect ratio leads to increase of lift coefficient corresponding to maximal lift to drag. High bypass ratio engines have smaller fuel consumption and lower noise level but have negative effect on flow around airframe including take-off and landing phases. The necessity of solving problem of intensive aerodynamic heating of surface element of flight vehicles and by ensuring of their stability and controllability and also by need of implementing of high-volume tanks for hydrogen fuel and super high bypass ratio engines.

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