Results 51 to 60 of about 1,322,842 (239)

Launch and Recovery of a Hybrid Rocket Intended for Reuse

open access: yesAerospace
The objective of the project was to develop a hybrid rocket with a recovery system that would facilitate reuse. The rocket was successfully developed, launched and recovered.
Atsushi Takano   +12 more
doaj   +1 more source

Numerical Simulations of Flow and Fuel Regression Rate Coupling in Hybrid Rocket Motors [PDF]

open access: yesINCAS Bulletin, 2017
The hybrid propulsion offers some remarkable advantages like high safety and high specific impulse and thus it is considered a promising technology for the next generation launchers and space systems. The purpose of this work is to validate a design tool
Marius STOIA-DJESKA   +2 more
doaj   +1 more source

Emerging Memory and Device Technologies for Hardware‐Accelerated Model Training and Inference

open access: yesAdvanced Electronic Materials, EarlyView.
This review investigates the suitability of various emerging memory technologies as compute‐in‐memory hardware for artificial intelligence (AI) applications. Distinct requirements for training‐ and inference‐centric computing are discussed, spanning device physics, materials, and system integration.
Yoonho Cho   +6 more
wiley   +1 more source

Experimental investigation of erosion rate of insulation materials using hybrid rockets

open access: yesFirePhysChem, 2021
Thermal insulation is essential to protect the exposed surface from high-temperature and high heat flux situations. The selection of suitable insulation materials plays a crucial role in determining rocket performance.
Phaninder Reddy Vaka   +2 more
doaj   +1 more source

Dual‐Function Electrocatalysis: Simultaneous Wastewater Remediation and Hydrogen Evolution—A Comprehensive Review

open access: yesCarbon Energy, EarlyView.
Replacing the oxygen evolution reaction with the electro‐oxidation of pollutants and waste streams offers an energy‐efficient route for simultaneous hydrogen production and pollutant remediation. This review summarizes the reaction mechanisms, catalyst design principles, and emerging paired‐electrolysis strategies that govern activity, selectivity ...
Safa Al‐Yahyaey   +4 more
wiley   +1 more source

HYBRID PROPELLANT ROCKET MOTOR [PDF]

open access: yesInternational Conference on Aerospace Sciences and Aviation Technology, 1999
The paper deals with hybrid propellant rocket motor as a propulsion unit of prospective rocket weapon systems, as well as a drive unit of some cosmic rocket carriers. There are introduced possible constructional schemes of hybrid propellant rocket motor and is mentioned further on the particular general internal ballistic solution of the solid part of ...
openaire   +1 more source

System Design and Launch of a Hybrid Rocket with a Star-Fractal Swirl Fuel Grain Toward an Altitude of 15 km

open access: yesApplied Sciences
To achieve low-cost and on-demand launches of microsatellites, the authors have been researching and developing a micro hybrid rocket since 2014. In 2018, a ballistic launch experiment was performed using the developed hybrid rocket, where it reached an ...
Atsushi Takano   +10 more
doaj   +1 more source

Review of Classical Diffusion-Limited Regression Rate Models in Hybrid Rockets

open access: yesAerospace, 2019
In this article, we undertake a concise review of several milestone developments in classical regression rate models of hybrid rocket motors. After a brief description of the physical processes entailed in hybrid rocket combustion, Marxman’s ...
Timothy Marquardt, Joseph Majdalani
doaj   +1 more source

Aero‐breakup of droplets: Recent progress and outlook

open access: yesDroplet, EarlyView.
This work systematically reviews the recent progress of droplet aero‐breakup studies. The discussion covers the research history, theoretical framework, new breakup mode discoveries, influence of droplet fluid properties, scenarios of multi‐droplet and droplet cloud, and finally, an outlook for future explorations is presented. Abstract Aero‐breakup of
Ben Guan   +4 more
wiley   +1 more source

Special Issue “Hybrid Rocket (Volume II)”

open access: yesAerospace, 2022
Over the past 40 years, the loss rate for commercial passenger aircrafts has decreased down to about one in ten million, whereas the loss rate for spaceflight has remained high, in the 1% range [...]
Toru Shimada   +2 more
openaire   +4 more sources

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