Results 21 to 30 of about 79,822 (310)

Review of State-of-the-Art Green Monopropellants: For Propulsion Systems Analysts and Designers

open access: yesAerospace, 2021
Current research trends have advanced the use of “green propellants” on a wide scale for spacecraft in various space missions; mainly for environmental sustainability and safety concerns.
Ahmed E. S. Nosseir   +2 more
doaj   +1 more source

BN/BNSiO2 sputtering yield shape profiles under stationary plasma thruster operating conditions

open access: yesAIP Advances, 2016
Quartz Crystal Microbalance (QCM) is used to measure the volumetric and total sputtering yield of Boron Nitride (BN) and Boron Nitride Silicon Dioxide (BNSiO2) bombarded by Xenon ions in the energy range of 100 eV to 550 eV.
M. Ranjan   +7 more
doaj   +1 more source

Comprehensive Performance Evaluation of Densified Liquid Hydrogen/Liquid Oxygen as Propulsion Fuel

open access: yesEnergies, 2022
Densified liquid hydrogen/liquid oxygen is a promising propulsion fuel in the future. In order to systematically demonstrate the benefits and challenges of densified liquid hydrogen/liquid oxygen, a transient thermodynamical model considering the heat ...
Fushou Xie, Qiang Sun
doaj   +1 more source

Shock Wave and Aeroelastic Coupling in Overexpanded Nozzle

open access: yesAerospace
The growing demand for increasing the engine power of a liquid rocket is driving the development of high-power De-Laval nozzles, which is primarily achieved by increasing the expansion ratio.
Haifeng Hu   +3 more
doaj   +1 more source

Study of Manufacturing Processes for Liquid Rocket Turbopump Impellers: Test and Analysis [PDF]

open access: yesJournal of Aerospace Technology and Management, 2020
In the context of the cooperative development of the L75 Liquid Rocket Engine (with 75 kN of thrust) and in the frame of a global enlargement of competence in the field of turbomachines for liquid rocket propulsion systems, Institute of Space Propulsion ...
Ekaterina Sergueievna Zink   +5 more
doaj   +2 more sources

Highly Volatile Liquids for Propulsion [PDF]

open access: yesScientific American, 1888
n ...
openaire   +2 more sources

Materials for laser propulsion: "liquid" polymers [PDF]

open access: yesSPIE Proceedings, 2008
The application of energetic polymers has resulted in an increased thrust in micro laser plasma thrusters compared to standard polymers. In this study we tested a novel concept for micro laser plasma thrusters, i.e. the application of liquid polymeric fuels, by using polymer solutions of the energetic materials with different viscosity.
T. Lippert   +5 more
openaire   +1 more source

Application of Gaussian SVM Flame Detection Model Based on Color and Gradient Features in Engine Test Plume Images

open access: yesSensors
This study presents a flame detection model that is based on real experimental data that were collected during turbopump hot-fire tests of a liquid rocket engine.
Song Yan   +3 more
doaj   +1 more source

Micro propulsion in liquid by oscillating bubbles [PDF]

open access: yes2013 IEEE 26th International Conference on Micro Electro Mechanical Systems (MEMS), 2013
This paper presents a micro propelling mechanism that may be possibly used to propel a micro medibot (medical robot) that can swim inside of animal/human bodies. A key contribution of this work is that, to our best knowledge, for the first time we microfabricate micro propelling devices based on bubble oscillation and prove the propelling mechanism in ...
Jian Feng, Sung Kwon Cho
openaire   +1 more source

Challenges of Ablatively Cooled Hybrid Rockets for Satellites or Upper Stages

open access: yesAerospace, 2021
Ablative-cooled hybrid rockets could potentially combine a similar versatility of a liquid propulsion system with a much simplified architecture. These characteristics make this kind of propulsion attractive, among others, for applications such as ...
Francesco Barato
doaj   +1 more source

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