Transient aero-thermal mapping of passive Thermal Protection system for nose-cap of Reusable Hypersonic Vehicle

Mahulikar, Shripad P.; Khurana, Shashank; Dungarwal, Ritesh; Shevakari, Sushil G.; Subramanian, Jayakumar; Gujarathi, Amit V.

doi:10.1007/bf03256567

Cited by 14 publications

(1 citation statement)

References 19 publications

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“…Some techniques have been proposed to remedy the deficiencies, such as cascading different waveriders 9 to improve low speed performance, changing the basis flow fields to promote longitudinal stability, 10 and blunting the leading edge to alleviate the aero-heating effect. 11,12 In addition to the above deficiencies, a severe one is inadequate loading volume. To increase the loading capacity, a common means is to generate a thicker lower surface, for instance, by increasing the shock wave angle of the parent flow.…”

Section: Introductionmentioning

confidence: 99%

Effect of upper surface shape on waverider performances

Liu

Tian

Bai

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part G:

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Waveriders are of high lift-to-drag (L/D) ratio in hypersonic states; however, low volume of loading limits its application in practical engineering significantly. Raising the upper surface is a method to increase the volume space for waveriders, and this article studies the effect of the upper surface shape on the aerodynamic performances based on a single swept waverider configuration. Cubic polynomials were employed to construct the upper surface to replace the freestream-traced surface, and 2 parameters, the trailing edge thickness and inclination angle of head, were extracted as design variables. Analyzing the flow field using computational fluid dynamics techniques, raising the upper surface only had effect on the aerodynamic performance from the upper surface, but nearly no effect on the lower surface, and thus the design of upper and lower surfaces can be decoupled. As the trailing edge thickness and inclination angle of head increase, the volume of waveriders grows rapidly, while the loss in L/D ratio is limited. Compared with expanding the lower surface, raising the upper surface yielded better aerodynamic performances. The results indicate that raising the upper surface is a feasible and efficient approach to increase the loading volume of the waverider and hence promote its application in engineering.

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Section: Introductionmentioning

confidence: 99%

Effect of upper surface shape on waverider performances

Liu

Tian

Bai

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part G:

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Application of high temperature heat pipe in hypersonic vehicles thermal protection

Bai

Zhang

2011

J. Cent. South Univ. Technol.

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In order to develop further the application of high temperature heat pipe in hypersonic vehicles thermal protection, the principles and characteristics of high temperature heat pipe used in hypersonic vehicles thermal protection were introduced. The methods of numerical simulation, theory analysis and experiment research were utilized to analyze the frozen start-up and steady state characteristic of the heat pipe as well as the machining improvement for fabricating irregularly shaped heat pipe which is suitable for leading edge of hypersonic vehicles. The results indicate that the frozen start-up time of heat pipe is long (10 min) and there exists large temperature difference along the heat pipe (47 °C/cm), but the heat pipe can reduce the temperature in stagnation area of hypersonic vehicles from 1 926 to 982 °C and work normally during 1 000−1 200°C. How to improve the maximum heat transfer capability and reduce the time needed for start-up from frozen state of the heat pipe by optimizing thermostructure such as designing of a novel wick with high performance is the key point in hypersonic vehicles thermal protection of heat pipe.

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Aero-thermal analysis of lifting body configurations in hypersonic flow

Kumar

Mahulikar

2016

Acta Astronautica

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Transient aero-thermal mapping of passive Thermal Protection system for nose-cap of Reusable Hypersonic Vehicle

Cited by 14 publications

References 19 publications

Effect of upper surface shape on waverider performances

Effect of upper surface shape on waverider performances

Application of high temperature heat pipe in hypersonic vehicles thermal protection

Aero-thermal analysis of lifting body configurations in hypersonic flow

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