Results 1 to 10 of about 410,560 (293)

Design and Simulation of Single Capillary Injector and Circular Injector Plate for a Monopropellant Thruster [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2022
In this research, design and simulation of a single capillary injector and three-hole circular injector plate of a 10N Hydrazine monopropellant thruster were performed. Ansys Fluent software was used to simulate the injector and injector plate .
Sajad Davari, Hadiseh Karimaei
doaj   +1 more source

Minimum-Energy Transfer Optimization between Near-Circular Orbits Using an Approximate Closed-Form Solution

open access: yesAerospace, 2023
This paper explores the use of the averaging method in the optimal control problem related to the multirevolution orbital transfer of a spacecraft with low-thrust capabilities.
Kirill Suslov   +2 more
doaj   +1 more source

Digital model of the drag force of the Earth’s upper atmosphere for the design of low-orbit spacecraft

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2023
A digital model is described for estimating the drag force of the Earth's upper atmosphere acting on a low-orbit spacecraft. Unlike the classical model of aerodynamic force, the digital model is the result of a computer algorithm.
V. V. Volotsuev
doaj   +1 more source

Low-thrust perturbation guidance [PDF]

open access: yesAstrodynamics Conference, 1982
Low-thrust perturbation guidance, as applied to the minimum time problem of an Earth to Mars rendezvous, has been reexamined and shown to perform orders of magnitude better, as measured by the terminal state error, than previous studies indicated. The orbits of Earth and Mars were assumed to be inclined and elliptical.
T. BAUER, L. WOOD, T. CAUGHEY
openaire   +2 more sources

Provide a Predictive Model for the Preliminary Design of Swirl Injectors Based on Neuro-Fuzzy Model Thruster [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2019
the effect of the internal geometry of the injector of a low-thrust monopropellant thruster on the characteristics of the outlet liquid sheet, such as the liquid sheet thickness, the spray cone angle, the average output velocity, and its mass flow rate ...
Hadiseh Karimaei
doaj   +1 more source

Autonomous Optimal Absolute Orbit Keeping through Formation Flying Techniques

open access: yesAerospace, 2023
In this paper, the problem of autonomous optimal absolute orbit keeping for a satellite mission in Low Earth Orbit using electric propulsion is considered.
Ahmed Mahfouz   +3 more
doaj   +1 more source

Impact of basement thrust faults on low-angle normal faults and rift basin evolution: a case study in the Enping sag, Pearl River Basin [PDF]

open access: yesSolid Earth, 2021
Reactivation of pre-existing structures and their influence on subsequent rift evolution have been extensively analysed in previous research on rifts that experienced multiple phases of rifting, where pre-existing structures were deemed to affect ...
C. Deng   +7 more
doaj   +1 more source

Automation of low-thrust engine testing

open access: yesКосмические аппараты и технологии, 2023
The article discusses the key role of the use of automation in the stands, as well as the ignition system of the stand of low-thrust engines and the features of its operation as part of the stand.
A. D. Shirokov   +4 more
doaj   +1 more source

Development and tests of a thrust stand with an in-situ null position adjustment and calibration method for low power plasma thrusters

open access: yesResults in Engineering, 2023
A growing number of space missions use electric propulsion systems due to their higher specific impulse and greater efficiency compared to chemical propulsion systems.
Ugur Kokal, Emin Saridede, Murat Celik
doaj   +1 more source

Simulation and Experiment of Ionic Wind Thruster at Low Air Pressures

open access: yes气体物理, 2023
Thrust generated by ionic wind has the advantages of no mechanical rotating parts, low power consumption and low noise, and has important application potential in stratospheric airships and solar planes.
Rong-hui QUAN, Bo WANG, Yun-jia YAO
doaj   +1 more source

Home - About - Disclaimer - Privacy