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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Journal of Flow Visualization and Image Processing
SJR: 0.11 SNIP: 0.312 CiteScore™: 0.1

ISSN Печать: 1065-3090
ISSN Онлайн: 1940-4336

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Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.2012006046
pages 121-138

FLOW AND HEAT TRANSFER VISUALIZATION INSIDE AND OUTSIDE THE HYDRAULIC RESERVOIR OF A THRUST VECTOR CONTROL SYSTEM

Nang T. Pham
NASA Glenn Research Center, Cleveland, OH 44135
David T. Frate
NASA Glenn Research Center, Cleveland, OH 44135
David F. Chao
Fluid Physics and Transport Branch, Ohio Aerospace Institute at NASA Glenn Research Center, Cleveland, OH 44135, USA
Nengli Zhang
Pearlica Technologies, Inc.

Краткое описание

Thrust Vector Control (TVC) systems provide a steering function for a launched vehicle during powered flight by controlling the rocket engine(s) and thrust direction. The Ares I Upper Stage design utilized a hydraulically driven TVC system. The hydraulic reservoir in the system had to be sized thus as to accommodate the heat generated during the mission. Since heat absorption by the hydraulic reservoir is a key factor in the performance of the TVC system, a series of computational fluid dynamics (CFD) simulations of the fluid flow and heat transfer in the reservoir has been performed with different operating and environmental conditions to gain insight into the flow and heat transfer outside and inside to the reservoir. The results of simulation show that the relevant data obtained in simulation, such as the inlet and outlet temperatures and the heat absorption by the reservoir, coincide with the data obtained during ground testings of the flight-like TVC system at the NASA Glenn Research Center. Three different reservoir operating conditions, which could occur during the Ares I flight, were simulated, and the relevant flow and heat transfer data were obtained. The flow and heat visualizations produced by the simulations provided valuable information about the reservoir performance.

ЛИТЕРАТУРА

  1. Dorfman, A. and Renner, Z., Conjugate problems in convective heat transfer: Review.

  2. Frate, D. T., Pham, N. T., Christie, R. J., McQuillen J. B., Motil, B. J., Chao, D. F., and Zhang, N. , Flow and heat transfer in hydraulic reservoir of thrust vector control system.

  3. NASA G. C. Marshall Space Flight Center , NASA's Ares I Upper Stage, Powering the Second Phase of Rocket's Journey to Space.

  4. Newton, K. , NASA Completes Review Milestone for Ares I Vehicle.

  5. Raznjevič, K. , Handbook of Thermodynamic Table and Charts.

  6. SAE AIR1362B: Aerospace Hydraulic Fluids Physical Properties.


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