Solid rocket propulsion technology for de-orbiting spacecraft

Okniński, Adam

doi:10.1016/j.cja.2021.07.038

Cited by 11 publications

(1 citation statement)

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“…Solid rocket engines occupy a pivotal role in contemporary technology, notably within the defence and aerospace exploration sectors [1,2]. These engines leverage high-energy-density and stable energetic composite solid propellants, leading to their widespread application [3,4].…”

Section: Introductionmentioning

confidence: 99%

Analysis of thermomechanical coupled accelerated aging of HTPB propellants

Zeng,

Huang,

Chen

et al. 2024

Propellants Explo Pyrotec

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This study employed macroscopic uniaxial compression tests at low and medium strain rates, coupled with microscopic electron microscopy, to extensively analyse the impact of thermomechanical coupled aging on the accelerated aging of Hydroxyl‐terminated Polybutadiene (HTPB) propellants, contrasting it with the effects of isolated factors such as heat and dynamic reciprocating force. Results indicate that at various environmental temperatures (323 K, 343 K, and 363 K), thermomechanical coupled aging more significantly affects HTPB propellants than isolated factors. This effect is macroscopically evident in increased ease of deformation, permanent deformation during aging, continual increase in dissipated energy, and a decrease in average stress and ultimate strain post‐aging. Microscopically, the effect predominantly arises from the interplay between matrix thermal degradation and particle fragmentation, which rapidly accumulate and substantially impact the material's macroscopic mechanical properties. Furthermore, as the aging temperature rises, the alterations in both macroscopic mechanical properties and microscopic morphology of HTPB propellants become more pronounced. However, overly high temperatures may swiftly result in substantial material performance deterioration. Consequently, while elevating temperature effectively accelerates thermomechanical aging, the potential adverse effects on material performance must be judiciously considered. This underscores the necessity of balancing temperature regulation with aging efficiency enhancement in HTPB propellants to ensure effective control and quantitative assessment of the aging process, while minimizing material degradation.

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Section: Introductionmentioning

confidence: 99%