Results 21 to 30 of about 573 (256)
Aerospace, 2023 Fused deposition technology (FDM), as an additive manufacturing (AM) technology, holds immense potential in the field of solid grain manufacturing. It can accomplish complex grain shaping with ultra-low-pressure ratios, which are challenging to achieve ...
Shixiong Song +4 more
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Solving an irregular burning problem in a small rocket motor [PDF]
Scientific Technical Review, 2014 During the design and development of a solid rocket motor, intensive irregular burning appeared in the area of high initial temperatures. The cylindrical propellant grain was designed for approximately neutral burning, with a hollow tube and both burning
Gligorijević Nikola +5 more
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Design of Multi-Propellant Star Grains for Solid Propellant Rockets
Defence Science Journal, 1980 A new approach to solve the geometry-problem of solid propellant star is presented. The basis of the approach is to take the web-thickness (a ballistic as well as a geometrical property) as the characteristic length. The nondimensional characteristic parameters representing diameter, length, slenderness-ratio, and ignitor accommodation of the grain are
S. Krishnan, Tarit K. Bose
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International Journal of Aerospace Engineering, 2020 Unexpected pressure rise may occur in the end-burning grain solid rocket motor. It is generally believed that this phenomenon is caused by the nonparallel layer combustion of the burning surface, resulting in the increase of burning rate along the ...
Wei Xianggeng +5 more
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Mitigation of slivers using a new propellant grain design to improve propulsion systems
Aviation, 2012 The research work addresses mathematical modelling and computational analysis of novel solid propellant grain configuration. The aviation industry is working on propulsion systems as well.
Sarah Farrukh, M. Bilal Khan
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Regarding the perturbed operating process of DB propellant rocket motor at extreme initial grain temperatures [PDF]
INCAS Bulletin, 2012 Despite many decades of study, the combustion instability of several DB propellants is still of particular concern, especially at extreme grain temperature conditions of rocket motor operating.
Ioan ION, Titica VASILE, Doru SAFTA
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Aerospace, 2022 The reverse design of solid propellant grain for a performance-matching goal, one of the most challenging directions of the solid rocket motor designing work, is limited by the traditional semi-empirical parameter-driven optimization methods based on ...
Wentao Li +3 more
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Defence TechnologyIn this paper, to study the mechanical responses of a solid propellant subjected to ultrahigh acceleration overload during the gun-launch process, specifically designed projectile flight tests with an onboard measurement system were performed.
Yiming Zhang +5 more
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Effect of cyclic loads on structural damage of rocket propellant grain [PDF]
Scientific Technical Review, 2019 Rocket motor propellant grain, cast or bonded into the motor chamber or solid coating, is exposed to various loads during its service life. Rocket propellant is a viscoelastic material, whose mechanical properties strongly depend on temperature and ...
Gligorijević Nikola +5 more
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Thermal and acceleration load analysis of new 122 mm rocket propellant grain [PDF]
Scientific Technical Review, 2016 In order to achieve very strong inter-ballistic requirements, a unusual free standing rocket motor propellant grain was designed, with variable channel diameter.
Gligorijević Nikola +4 more
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