Results 31 to 40 of about 7,758 (239)

Effect of aluminum particle size on agglomeration size and burning rate of composite propellant

open access: yesJournal of Thermal Science and Technology, 2022
An experimental investigation on effects of aluminum particle size on the combustion characteristics of aluminized composite propellant was performed. Reducing the agglomeration size on the burning surface is important to reduce slag in the solid rocket ...
Apollo B. FUKUCHI
doaj   +1 more source

Flexible composite membrane Patent [PDF]

open access: yes, 1970
Flexible composite membrane structure impervious to extremely reactive chemicals in rocket ...
Taylor, L. L., Vango, S. P.
core   +1 more source

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

open access: yesAdvanced 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   +4 more
wiley   +1 more source

Study on peristaltic continuous mixing conveyor for composite propellant slurry mixing

open access: yesNihon Kikai Gakkai ronbunshu, 2017
In recent years, the demand for rocket launching has increased due to the development of space technology. However, using inexpensive rockets is not always possible.
Yasuyuki YAMADA   +6 more
doaj   +1 more source

REINFORCEMENT OF COMPOSITE ROCKET PROPELLANTS BY COTTON AND NITROCELLULOSE FIBRES [PDF]

open access: yesInternational Conference on Aerospace Sciences and Aviation Technology, 1997
The Egyptian extra long stapled cotton "GIZA76" which has a very good mechanical and chemical properties [I] was selected as a raw material to obtain nitrocellulose energetic fibres, such fibres can be used as a reinforcing agent in propellant formulations instead of inert fibres to improve not oniy the mechanical properties of composite propellants ...
H. MOSTAFA   +3 more
openaire   +1 more source

Feline‐Inspired Robot Enabled by Combustion‐Driven Actuators for Agile Motion and High‐Payload Obstacle Traversal

open access: yesAdvanced 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

A Coupled Heat Transfer Calculation Strategy for Composite Cooling Liquid Rocket Engine

open access: yesAerospace, 2023
To better understand the characteristics of coupled heat transfer in liquid rocket engines, a calculation scheme is proposed in this paper. This scheme can simulate the coupled heat transfer processes, including combustion and flow in the thrust chamber,
Bo Xu   +4 more
doaj   +1 more source

Numerical Analysis of Solid Rocket Motor Instabilities With AP Composite Propellants [PDF]

open access: yes, 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  

The Future of Hydrogen‐Powered Aviation: Technologies, Challenges, and a Strategic Roadmap for Sustainable Decarbonization

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira   +4 more
wiley   +1 more source

Efeito da concentração do catalisador acetilacetonato férrico na cura de poliuretano à base de polibutadieno líquido hidroxilado (PBLH) e diisocianato de isoforona (IPDI) Effect of ferric acetylacetonate catalyst concentration on the cure of polyurethane based on hydroxy terminated polybutadiene and isophorone diisocyanate

open access: yesQuímica Nova, 2002
The reaction between hydroxy-terminated polybutadiene and isophorone diisocyanate constitutes the base of the curing process of the most composite solid propellant used in the propulsion of solid rocket propellant.
Willian César Paterlini   +4 more
doaj   +1 more source

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