Results 21 to 30 of about 29,920 (238)
A Study on Dynamic Characteristics of Thin-Walled Cylindrical Cavities with a Large Aspect Ratio
Aerospace, 2022 The unstable combustion problem in small-sized solid rocket engines with a large aspect ratio is so complicated that its causes remain unclear. In this study, the coupled vibration between the sound field and shell in the engines was proposed as a ...
Fangfang Xu, Hong Li, Dongxu Zhang
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Servo-stabilization of combustion in rocket motors [PDF]
, 1952 This paper shows that the combustion in the rocket motor can be stabilized against any value of time lag in combustion by a feedback servo link from a chamber pressure pickup, through an appropriately designed amplifier, to a control capacitance on the ...
Tsien, H. S.
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FirePhysChem, 2021 Human spaceflight, space tourism, and the launch of microsatellites are all expected to grow in the future. In fact, with the recent increase of the satellite market, almost 1000 smallsats per year are foreseen to be launched over the next decade. Hybrid
Yash Pal +4 more
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Laser induced fluorescence thermometry with OH (2, 0) band excitation
Journal of Fluid Science and Technology, 2016 Measurement technique that can be adapted to high temperature and pressure environment in the rocket combustion chamber has been limited to qualitative.
Teppei YANO +3 more
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Journal of Thermal Science and Technology, 2011 In order to clarify flame behavior in the combustion chamber of swirling-oxidizer-flow-type hybrid rocket engines, a small hybrid rocket engine with a large quartz glass window was fabricated to observe the inside of the combustion chamber from the front
Saburo YUASA +5 more
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Effects of Compounds in Liquefied Methane on Rocket Engine Operation
Aerospace, 2022 Methane (CH4) is a promising rocket fuel for various future space mission scenarios. It has advantages in terms of cost, performance, and environmental friendliness.
Jan van Schyndel +4 more
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Advanced Science, EarlyView.Inspired by nature's competitive maneuvers, this study introduces a combustion‐driven soft actuator that powers a multi‐modal “Jump‐and‐Fly Catbot” (JFC). With millisecond response, high‐force output (over 70 times its weight) and precise control (error within 5%), the robot can jump, fly, hover, and escape from challenging environments, achieving ...
Hongkuan Ma +4 more
wiley +1 more source
Numerical Analysis of Solid Rocket Motor Instabilities With AP Composite Propellants [PDF]
, 1999 A non-steady model for the combustion of ammonium perchlorate composite propellants has been developed in order to be incorporated into a comprehensive gasdynamics model of solid rocket motor flow fields.
Beddini, Robert A. +3 more
core
Kinetic Compensation of Barrel Launch Under High‐Speed Solid‐Phase Particulate Impacts
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT An accurate launch‐dynamics computational method is critical for barrel weapon service life assessment and multiphase physics field refinement. Given the lack of studies on the solid‐phase buildup behavior at the projectile base, this paper provides an improved method for calculating the launching dynamics under high pressure and high speed ...
Zhiyi He +3 more
wiley +1 more source
AerospaceHybrid rocket motors have great development potential due to their outstanding thrust adjustment flexibility and long-term operation ability. However, nozzle erosion during the motor operation can cause an increase in the throat area of the nozzle, which
Xiangyu Meng +5 more
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