Base Flow Investigation of a Recoverable Orbital Capsule

Morgenstern, Algacyr; Moraes, Paulo

doi:10.2514/6.2003-1252

Cited by 2 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To negate the enormous frictional viscous heating, such vehicles require a special system called the thermal protection system . Onboard communication and capsule retrieval systems are mostly stored at the base of such capsules as this positioning avoids the risk of heat damage due to lower base heating loads compared to the forebody heating . Certain extreme missions like planetary exploration re‐entry probes still require dedicated base heat shields as the heating rates are demanding .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Base heat flux measurement techniques in impulse hypersonic test facilities

Irimpan

Menezes

Srinivasan

2019

Heat Trans. Asian Res.

View full text Add to dashboard Cite

Safe and efficient hypersonic missions require exhaustive testing to capture the surface heat flux used in optimizing thermal protection systems. Though low, base heat transfer rates are still relevant and their estimation is of the utmost importance. Impulse hypersonic test facilities like the shock tunnel are commonly used for such estimation tests. The present paper compares contemporary heat flux measurement techniques, namely, E‐type coaxial thermocouples, Pt‐thin films, and atomic layer thermopiles in a hypersonic shock tunnel at the base of a scaled‐down re‐entry capsule. Base flow establishment is ensured using pressure measurements. The measurements indicated that the base‐stagnation point heat flux was approximately 2% to 3% of the forebody stagnation heat flux and it stabilized at an approximate nondimensional establishment time of 43.2 ± 2.4.

show abstract

Section: Introductionmentioning

confidence: 99%

“…damage due to lower base heating loads compared to the forebody heating. 3,4 Certain extreme missions like planetary exploration re-entry probes still require dedicated base heat shields as the heating rates are demanding. 5,6 Though lower base heat loads are a boon, they brings with them large uncertainties.…”

mentioning

confidence: 99%