Advanced Solid Rocket Launcher and Its Evolution

Morita, Yasuhiro; Imoto, Takayuki; Habu, Hiroto; Ohtsuka, Hirohito; Hori, Keiichi; Koreki, Takemasa; Fukuchi, Apollo B.; Uekusa, Yasuyuki; Akiba, Ryojiro

doi:10.2322/tastj.8.tg_19

“…The carrying capacity for GTO can reach 7t. Concurrently, Japan has developed the Epsilon solid launch vehicle based on the concept of intelligent measurement, launch, and control to significantly reduce the number of ground testers and the launch costs [6].…”

Section: Comprehensive Performance Improvement Stage (2010s-now)mentioning

confidence: 99%

Review, Prospect and Technical Challenge of Launch Vehicle

Wang

¹

,

Zhang

²

,

Hu

³

et al. 2023

Springer Series in Astrophysics and Cosmology

1

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Following six decades of development, the technology of launch vehicle has progressed with respect to the dual action of demand traction and technical promotion, providing increasingly valuable high-tech services for society. Currently, the development of launch vehicle is progressing with respect to stronger capabilities, higher reliability, lowering costs, flexibility, and user convenience. Retrospectively, the global development history of the launch vehicle technology can be roughly categorized into four stages with distinct characteristics of the decades.

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“…The need for new propellants is accelerating, prompted by the new space age, US-Russian-Chinese arms race, and hypersonic flights [1][2][3]. Nations of the world have announced new planetary explorations aimed at reaching deeper and further into space [4][5][6][7]. This will require high performance propellants.…”

Section: Introductionmentioning

confidence: 99%

Composite Solid Rocket Propellant Aging: Multi Parameter Statistical Analysis

Biggs

2022

Int J Aeronaut Aerosp Eng

0

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The invention of composite solid propellants enabled close packing of fuel and oxidizer particles, leading to modern propellants. The superior mechanical properties of the polymer matrix allowed more propellant to be placed in a rocket motor pressure vessel through case bonding (bonding propellant directly to the vessel case). Propellants are often stored for periods of up to 20 to 40 years during which time they can degrade under the action of environmental conditions. This may eventually be manifested through formation of surface cracks. Degradation over time, or aging, is therefore important.Aging is a complex mechanical and chemical process, involving multi-scale, multidisciplinary mechanisms, from atomic, molecular scale to micro-and macro-scale events. Many of its intimate details are poorly understood, making aging prediction a challenge. Our research has shown that a mechanical property, tangent modulus, is a key aging indicator. Data base analysis showed a connection with strain rate, ambient storage time, gel fraction of the matrix polymer, matrix cross link density, molecular weight of the polymer sol, and propellant density may exist. A dimensionless ratio containing these parameters was formed to predict propellant failure. Statistical analysis showed that HTPB iodine number and normalized absorbance also correlate with tangent modulus.

show abstract

“…The need for new propellants is accelerating, prompted by the new space age, US-Russian-Chinese arms race, and hypersonic flights [1][2][3]. Nations of the world have announced new planetary explorations aimed at reaching deeper and further into space [4][5][6][7]. This will require high performance propellants.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2022

Int J Aeronaut Aerosp Eng

0

View full text Add to dashboard Cite

The invention of composite solid propellants enabled close packing of fuel and oxidizer particles, leading to modern propellants. The superior mechanical properties of the polymer matrix allowed more propellant to be placed in a rocket motor pressure vessel through case bonding (bonding propellant directly to the vessel case). Propellants are often stored for periods of up to 20 to 40 years during which time they can degrade under the action of environmental conditions. This may eventually be manifested through formation of surface cracks. Degradation over time, or aging, is therefore important.Aging is a complex mechanical and chemical process, involving multi-scale, multidisciplinary mechanisms, from atomic, molecular scale to micro-and macro-scale events. Many of its intimate details are poorly understood, making aging prediction a challenge. Our research has shown that a mechanical property, tangent modulus, is a key aging indicator. Data base analysis showed a connection with strain rate, ambient storage time, gel fraction of the matrix polymer, matrix cross link density, molecular weight of the polymer sol, and propellant density may exist. A dimensionless ratio containing these parameters was formed to predict propellant failure. Statistical analysis showed that HTPB iodine number and normalized absorbance also correlate with tangent modulus.

show abstract

Advanced Solid Rocket Launcher and Its Evolution

Cited by 5 publications

References 4 publications

Review, Prospect and Technical Challenge of Launch Vehicle

Review, Prospect and Technical Challenge of Launch Vehicle

Composite Solid Rocket Propellant Aging: Multi Parameter Statistical Analysis

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