Results 31 to 40 of about 940 (232)

Engine Use In Hybrid Rocket - A Review

Graduate Research in Engineering and Technology, 2022
Despite all the other rocket motors on the market such as solid and liquid. A historically failed motor was in the market which was handicapped in performance but now with technological development in the previous years, hybrid rocket motor is the most influential talk in the market. Deeper in the paper we will discuss the hybrid motor focusing on the
Shantanu. U. Bayaskar, Vaibhav Arya, Shiva Prasad U   +2 more
openaire   +1 more source

Variability analysis of ABS solid fuel manufactured by fused deposition modeling for hybrid rocket motors

Journal of Mechanical Engineering and Sciences, 2021
The process of fused deposition material (FDM) was used to manufacture propellant grains of Acrylonitrile Butadiene Styrene (ABS) as novel rocket fuel grain, with three types of geometry in the burning port.
Jose Alejandro Urrego, Fabio Arturo Rojas, Jaime Roberto Muñoz   +2 more
doaj   +1 more source

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

Applied 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, Keita Yoshino, Yuki Fukushima, Ryuta Kitamura, Yuki Funami, Kenichi Takahashi, Akiyo Takahashi, Yoshihiko Kunihiro, Makoto Miyake, Takuma Masai, Shizuo Uemura   +10 more
doaj   +1 more source

Hydrodynamic Instabilities Modeling in Hybrid Rocket Engines [PDF]

Journal of Spacecraft and Rockets, 2019
Firing tests of a H2O2/polyethylene hybrid rocket motor were performed and analyzed in terms of pressure oscillations under various configurations, using liquid oxidizer injection or gaseous inject...
Jérôme Messineo, Jean-Yves Lestrade, Jouke Hijlkema, Jérôme Anthoine   +3 more
openaire   +1 more source

QCr0.8 Cu alloy /S06 stainless steel bimetal structure via In718 multi-interlayer fabricated by laser powder hybrid additive manufacturing

Journal of Materials Research and Technology, 2023
Fabricating high strength high conductivity (HSHC) Cu alloy inner parts by laser powder bed fusion (LPBF) and high-strength steel out layers on Cu alloy surfaces by laser-direct energy deposition (LDED), e.g., laser powder hybrid additive manufacturing ...
Baopeng Zhang, Wenqi Zhang, Haifeng Xiao, Haihong Zhu, Huanqing Yang, Yun Wang, Baijin Chen   +6 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

Designing and Testing of HDPE–N₂O Hybrid Rocket Engine

Engineering Proceedings
Hybrid Rocket Engines (HREs) combine the advantages of solid and liquid propellants, offering thrust control, simplicity, safety, and cost efficiency.
Triyan Pal Arora, Noah Buttrey, Peter Kirman, Sanmukh Khadtare, Eeshaan Kamath, Dario del Gatto, Adriano Isoldi   +6 more
doaj   +1 more source

Designing High Performance Organic Donor Molecules for Photovoltaics

Advanced Theory and Simulations, EarlyView.
Systematically tuning the fusion pattern and length of the π$\pi$‐bridge, along with adjusting the electron‐withdrawing (EW) strength of the terminal groups in small‐molecule donor A-π-Core-π$\text{A-}\pi \text{-Core-}\pi$‐A architectures, enables predictable modulation of the system's opto‐electronic properties.
Fabian Bauch, Chuan‐Ding Dong, Stefan Schumacher   +2 more
wiley   +1 more source

Heuristically Adaptive Diffusion‐Model Evolutionary Strategy

Advanced Science, EarlyView.
Building on the mathematical equivalence between diffusion models and evolutionary algorithms, researchers demonstrate unprecedented control over evolutionary optimization through conditional diffusion. By training diffusion models to associate parameters with specific traits, they can guide evolution toward solutions exhibiting desired behaviors ...
Benedikt Hartl, Yanbo Zhang, Hananel Hazan, Michael Levin   +3 more
wiley   +1 more source

Investigation of Performance Stability of a Nytrox Hybrid Rocket Propulsion System

Aerospace
Nitrous oxide is a highly suitable oxidizer for hybrid rockets due to its self-pressurizing properties, moderate cost, and high accessibility. However, its vapor pressure and density are highly dependent on ambient temperature, requiring careful ...
Shih-Sin Wei, Jui-Cheng Hsu, Hsi-Yu Tso, Jong-Shinn Wu   +3 more
doaj   +1 more source