Results 41 to 50 of about 1,322,842 (239)
Hybrid Rocket Propulsion for Sounding Rocket Applications [PDF]
, 1991 A discussion of the H-225K hybrid rocket motor, produced by the American Rocket Company, is given. The H-225K motor is presented in terms of the following topics: (1) hybrid rocket fundamentals; (2) hybrid characteristics; and (3) hybrid ...
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Trajectory Estimation for a Hybrid Rocket [PDF]
AIAA Guidance, Navigation, and Control Conference, 2009 This paper presents a research work to develop a navigation technique for a class of nano-micro space rocket. Onboard MEMS inertial sensors are used in view of post-flight trajectory estimation. Combined with synchronized measurements of the combustion engine which is of hybrid type and uses N2O and PE, we show how the relative redundancy of the data ...
Pierre-Jean Bristeau, Nicolas Petit
openaire +1 more source
Bio‐Inspired Gradient Coatings Enhance the Leading Edge Erosion Resistance of Wind Blades
Advanced Science, EarlyView.Rain‐induced erosion of the wind turbine blade leading edge poses a critical challenge to maintenance and operation. Here, we propose a bio‐inspired approach for erosion protection utilising a platelet‐reinforced polyurethane coating with a graded through‐thickness architecture.
Natalia Sofia Guevara‐Sotelo +2 more
wiley +1 more source
Chemical aspects of hybrid rocket propulsion
, 2023 openUna panoramica sulla propulsione a razzo ibrida con un focus sui suoi aspetti chimici. La tesi presenterà la propulsione ibrida in generale e ne esaminerà vantaggi e svantaggi.
CASOTTO, COSIMO
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AerospaceHybrid rocket motors have great development potential due to their outstanding thrust adjustment flexibility and long-term operation ability. However, nozzle erosion during the motor operation can cause an increase in the throat area of the nozzle, which
Xiangyu Meng +5 more
doaj +1 more source
Burn Time Correction of Start-Up Transients for CAMUI Type Hybrid Rocket Engine
Aerospace, 2021 Burn time errors caused by various start-up transient effects have a significant influence on the regression modelling of hybrid rockets. Their influence is especially pronounced in the simulation model of the Cascaded Multi Impinging Jet (CAMUI) hybrid ...
Tor Viscor +3 more
doaj +1 more source
Advances in Se Wide‐Bandgap Photovoltaics and TexSe1‐x SWIR Photodiodes
Advanced Science, EarlyView.In this review, fundamental properties and current challenges in Se photovoltaics (PVs) for tandem and indoor PVs and TexSe1‐x alloys for short wave infrared photodiodes are discussed. A case is made for the practicality of elemental chalcogenide optoelectronics, and a pathway toward resolving the key challenges in these respective technologies is ...
Adam D. Alfieri, Deep Jariwala
wiley +1 more source
Advanced Science, EarlyView.Green mechanochemical copolymerization was developed for universal interfacial modification of Group 13 and related fillers. By leveraging Lewis acid–base coordination to anchor sulfur‐containing polymers—validated via multiscale characterization and DFT—this versatile method boosts performance across liquid fuels, thermal‐shielding materials, and ...
Chen Wang +7 more
wiley +1 more source
Design of structural components for a hybrid sounding rocket [PDF]
, 2022 Il progetto di tesi consiste nella progettazione di alcune strutture di un sounding rocket. Comprende lo studio dello stato dell'arte, lo studio della teoria necessaria per la progettazione strutturale, il dimensionamento di alcuni componenti e la ...
Squarcina, Davide
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Effect of Varying Design Options on the Transient Behavior of a Hybrid Rocket Motor
Journal of Aerospace Technology and Management, 2014 Hybrid rockets provide compelling features for use in atmospheric and space rocket propulsion. One of the prominent applications of hybrid rockets which foster on its characteristics is the propulsion of micro air launch vehicles. In this paper, a set of
Raed Kafafy +2 more
doaj