Results 21 to 30 of about 20,668 (233)

Effects of radiation, curvature, and preferential diffusion on the extinction of laminar non-premixed flames

AIP Advances, 2022
The combined effects of radiative heat loss, curvature, and preferential diffusion on laminar non-premixed flames (or flamelets) are investigated in this work by using asymptotic analysis.
Yushan Gao, Wang Han, Zheng Chen, Qingfei Fu, Lijun Yang   +4 more
doaj   +1 more source

Review of State-of-the-Art Green Monopropellants: For Propulsion Systems Analysts and Designers

Aerospace, 2021
Current research trends have advanced the use of “green propellants” on a wide scale for spacecraft in various space missions; mainly for environmental sustainability and safety concerns.
Ahmed E. S. Nosseir, Angelo Cervone, Angelo Pasini   +2 more
doaj   +1 more source

On Maximum Evaporation Rates of Liquid Droplets in Rocket Motors [PDF]

, 1953
Upper limits have been estimated for the rate of evaporation of small liquid droplets in representative rocket combustion chambers. The droplets are assumed to be isothermal at all times. The droplet temperature as a function of time is determined by an
Penner, S. S.
core   +1 more source

Performance Analysis of a Kerosene/Gaseous Oxygen Liquid Rocket Engine

Engineering Proceedings
One of the most widely used rocket propulsion systems that uses liquid propellants is the liquid rocket engine. Due to their high density and specific impulse, liquid fuels and oxidizers are preferred.
Saravanan Ganesan, Kumar Subburayan, Prathmesh Bhatt, Axil Borad, Kishan Jumnani   +4 more
doaj   +1 more source

Cavitation Instability in Subcooled Liquid Nitrogen Nozzle Flows

Journal of Fluid Science and Technology, 2008
Subcooled cryogenic fluids are used in many fields such as a propellant for liquid propulsion rocket systems and a coolant for superconducting systems.
Kazuki NIIYAMA, Masakazu NOZAWA, Katsuhide OHIRA, Mamoru OIKE   +3 more
doaj   +1 more source

Development of Ultra-Low Specific Speed Centrifugal Pumps Design Method for Small Liquid Rocket Engines

Aerospace, 2022
With the growth of the satellite industry, the demand for a propulsion system for small launch vehicles and spacecraft has increased. Small liquid rocket engines may require Ultra-Low specific speed centrifugal pumps due to the low required thrust and ...
Hye In Kim, Tae-Seong Roh, Hwanil Huh, Hyoung Jin Lee   +3 more
doaj   +1 more source

Regenerative Cooling Comparison of LOX/LCH₄ and LOX/LC₃H₈ Rocket Engines Using the One-Dimensional Regenerative Cooling Modelling Tool ODREC

Applied Sciences, 2023
Due to the extreme temperatures inside the combustion chambers of liquid propellant rocket engines, the walls of the combustion chamber and the nozzle are cooled by either the fuel or the oxidizer in what is known as regenerative cooling.
Yigithan Mehmet Kose, Murat Celik
doaj   +1 more source

Study of Hot Gas Pressurizing System Tank and Liquid Rocket Engine Interaction by Dynamic Simulation [PDF]

فصلنامه علوم و فناوری فضایی, 2013
Providing of sufficient input pressure of pumps is Pressurizing system tank mission. In structure of objective propulsion system, pressurizing system of fuel tank is hot gas kind that is feeding with engine which caused of operation relational.
H. R. Ali Mohammady, D. Ramesh, M. R. Heidary, R Farrokhi, H. Karimi   +4 more
doaj  

Propulsion tests on ultra-high-temperature ceramic matrix composites for reusable rocket nozzles

Journal of Advanced Ceramics, 2023
Ultra-high-temperature ceramic matrix composites (UHTCMCs) based on a ZrB2/SiC matrix have been investigated for the fabrication of reusable nozzles for propulsion.
Diletta Sciti, Antonio Vinci, Luca Zoli, Pietro Galizia, Simone Failla, Stefano Mungiguerra, Giuseppe D. Di Martino, Anselmo Cecere, Raffaele Savino   +8 more
doaj   +1 more source

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

Advanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou, Zhiqiang Chen, Yuanbiao Ma, Zhiqiang Tang, Qianqian Wang   +4 more
wiley   +1 more source