Design of a Thermal Management System for Directed Energy Weapons

2009 ◽  
Author(s):  
Yeong-Ren Lin ◽  
Krishna Kota ◽  
Louis Chow ◽  
Quinn leland
Keyword(s):  
Thermal Management ◽  
Management System ◽  
Thermal Management System ◽  
Directed Energy

Online Prognostics for Fuel Thermal Management System

2015 ◽  
Author(s):  
Martin P. DeSimio ◽  
Brandon M. Hencey ◽  
Adam C. Parry
Keyword(s):  
Thermal Management ◽  
System Performance ◽  
Management System ◽  
Integrated Systems ◽  
Future Research ◽  
Thermal System ◽  
Thermal Systems ◽  
Thermal Management System ◽  
Directed Energy ◽  
Generation Power

Modern tactical aircraft subsystems face challenging weight and volume limitations. In addition, power and thermal subsystems have grown increasingly flight critical with each successive generation. Consequently, next generation power and thermal systems must reliably operate under narrower margins to enable electrically and thermally demanding capabilities, such as directed energy weapons. The ability to narrow these margins is ultimately limited by the ability to guarantee mission objectives despite variations and uncertainty in power and thermal system performance. This paper demonstrates online prognostic methods applied to a fuel thermal management system. Furthermore, this paper highlights the need for future research to quantify the effects on mission objectives caused by discrepancies between nominal and actual conditions for aircraft designs based on models of highly integrated systems.

scholarly journals Predicting unsteady heat transfer effect of vehicle thermal management system using steady velocity equivalent method

2021 ◽  
Vol 104 (2) ◽  
pp. 003685042110259
Author(s):  
Xiao Guoquan ◽  
Wang Huaming ◽  
Chen Lin ◽  
Hong Xiaobin
Keyword(s):  
Heat Transfer ◽  
Thermal Management ◽  
Management System ◽  
Exhaust System ◽  
Transfer Effect ◽  
Unsteady Heat Transfer ◽  
Thermal Management System ◽  
Comparison Results ◽  
Equivalent Method ◽  
Steady Velocity

In the process of vehicle development, the unsteady simulation of thermal management system is very important. A 3D-CFD calculation model of vehicle thermal management is established, and simulations were undertaken for uphill with full loads operations condition. The steady results show that the surface heat transfer coefficient increases to the quadratic parabolic relationship. The unsteady results show that the pulsating temperatures of exhaust and external airflow are higher than about 50°C and lower than 10°C, respectively, and the heat dissipating capacities are higher than about 11%. Accordingly, the conversion equivalent exhaust velocity increased by 1.67%, and the temperature distribution trend is basically the same as unsteady results. The comparison results show that the difference in the under-hood should be not noted, and that the predicted exhaust system surface temperatures using steady velocity equivalent method are low less 10°C than the unsteady results. These results show the steady velocity equivalent method can be used to predict the unsteady heat transfer effect of vehicle thermal management system, and the results obtained by this method are basically consistent with the unsteady results. It will greatly save computing resources and shorten the cycle in the early development of the vehicle thermal management system.

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