Results 31 to 40 of about 11,032 (271)

Experimental Study on the Mass Flow Rate of the Self-Pressurizing Propellants in the Rocket Injector

Aerospace, 2021
High vapor pressure propellants such as nitrous oxide are widely used in experimental hybrid and liquid rockets as they can be used in a self-pressurization mode, eliminating the need for external pressurization or pumps and simplifying the design of the
Tomasz Palacz, Jacek Cieślik
doaj   +1 more source

Numerical Simulation of Chemical Propulsion Systems: Survey and Fundamental Mathematical Modeling Approach

Aerospace, 2023
This study deals with the mathematical modeling and numerical simulation of chemical propulsion systems (CPSs). For this, we investigate and summarize a comprehensive collection of the simulation modeling developments of CPSs in academic works ...
Jihyoung Cha
doaj   +1 more source

Crater Observing Bioinspired Rolling Articulator (COBRA)

Advanced Intelligent Systems, EarlyView.
Crater Observing Bio‐inspired Rolling Articulator (COBRA) is a modular, snake‐inspired robot that addresses the mobility challenges of extraterrestrial exploration sites such as Shackleton Crater. Incorporating snake‐like gaits and tumbling locomotion, COBRA navigates both uneven surfaces and steep crater walls.
Adarsh Salagame, Henry Noyes, Eric Sihite, Arash Kalantari, Alireza Ramezani   +4 more
wiley   +1 more source

PECULIARITIES OF COOLING COMBUSTION CHAMBER OF ROCKET ENGINE, WHICH UTILIZE HIGH-TEST PEROXIDE AS AN OXIDIZER

Авіаційно-космічна техніка та технологія, 2017
Interest in storable ecologically friendly propellant has increased recently. One of the reasons for that is convenience in storage, handle and delivery. The most interesting storable propellant for launch vehicles is high-test peroxide with kerosene.  A
Михаил Витальевич Андриевский, Юрий Алексеевич Митиков, Дмитрий Анатольевич Шамровский   +2 more
doaj   +1 more source

Mass Spectrometry Structural Proteomics Enabled by Limited Proteolysis and Cross‐Linking

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The exploration of protein structure and function stands at the forefront of life science and represents an ever‐expanding focus in the development of proteomics. As mass spectrometry (MS) offers readout of protein conformational changes at both the protein and peptide levels, MS‐based structural proteomics is making significant strides in the
Haiyan Lu, Zexin Zhu, Lauren Fields, Hua Zhang, Lingjun Li   +4 more
wiley   +1 more source

Research Progress of Decommissioned Solid Rocket Motor Charge Emptying and Recycling Technology [PDF]

Hangkong bingqi
As the service life of solid rocket engines comes to an end, their operational reliability and performance stability gradually decline. Effectively disposing of large numbers of retired solid rocket engines has become a critical issue.
Zhou Yaping, Lin Zhihui, Wang Maoyu, Dong Jun, Liu Tiansheng, Qiao Haitao
doaj   +1 more source

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, Guolai Yang, Quanzhao Sun, Shuli Li   +3 more
wiley   +1 more source

Increasing the efficiency and stability of fuel supply to the combustion chamber of a liquid rocket engine by spray nozzles

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение
In this paper, various configurations of jet nozzles are analyzed, as well as their design. The effects of the inlet chamfer of jet nozzles on their flow rate and range are considered.
Yu. I. Ageenko, A. S. Bubnova
doaj   +1 more source

Impact of Advances in Anion Exchange Membranes and Ionomers on Alkaline Fuel Cells

Chemistry – An Asian Journal, Volume 20, Issue 18, September 15, 2025.
Advances in anion exchange membranes (AEMs) and ionomer design have propelled alkaline fuel cells toward unprecedented performance, with peak power densities exceeding 3.5 W cm⁻2. This review highlights how molecular‐level innovations— stable hydrocarbon backbones, robust cationic groups, and pH‐gradient‐enabled bipolar interfaces—enable durable, high ...
Zhongyang Wang, Shrihari Sankarasubramanian, Jianping Chen, Vijay K. Ramani   +3 more
wiley   +1 more source

The structure of knowledge base to support the development of low-thrust liquid-propellant rocket engines based on computer technologies

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2022
Some data on the knowledge base to support the development of low-thrust liquid-propellant rocket engines using computer technologies are presented. The structure of the base is proposed on the basis of characteristic features of engines, including the ...
V. V. Ryzhkov
doaj   +1 more source