Results 21 to 30 of about 33,101 (293)
DESIGN AND DEVELOPMENT OF AUTO DEPTH CONTROL OF REMOTELY OPERATED VEHICLE USING THRUSTER SYSTEM [PDF]
Journal of Mechanical Engineering and Sciences, 2014 Remotely Operated Vehicles are underwater robots designed specifically for surveillance, monitoring and collecting data for underwater activities. In the underwater vehicle industries, the thruster is an important part in controlling the direction, depth
F.A. Ali +4 more
doaj +1 more source
A Parallelized Genetic Algorithm to Evaluate Asteroid Impact Missions Using Electric Propulsion
Aerospace, 2022 A streamlined genetic algorithm was developed and implemented on a GPU to evaluate low-thrust trajectories of spacecraft propelled by an ion thruster. It was then applied to examine the utility of a specific thruster for an asteroid impact mission.
Kamesh Sankaran +4 more
doaj +1 more source
Design and Construction of a 2.45 GHz Microwave Electrothermal Thruster [PDF]
Journal of Nuclear Research and Applications, 2022 A microwave electrothermal thruster (MET thruster) has been constructed, consisting of a microwave plasma chamber 12 cm long and 8 cm in inner diameter and a micronozzle 10 mm long with 1 mm in diameter.
S. Fazelpour +3 more
doaj +1 more source
A multiple thruster array for 30-cm thrusters [PDF]
11th Electric Propulsion Conference, 1975 The 3.0-m diameter chamber of the 7.6-m diameter by 21.4-m long vacuum tank at NASA LeRC was modified to permit testing of an array of up to six 30-cm thrusters with a variety of laboratory and thermal vacuum bread-board power systems. A primary objective of the Multiple Thruster Array (MTA) program is to assess the impact of multiple thruster ...
V. RAWLIN, M. MANTENIEKS
openaire +1 more source
Emission Modes in Electrospray Thrusters Operating with High Conductivity Ionic Liquids
Aerospace, 2020 Electrospray thruster life and mission performance are strongly influenced by grid impingement, the extent of which can be correlated with emission modes that occur at steady-state extraction voltages, and thruster command transients.
Nolan M. Uchizono +6 more
doaj +1 more source
Micro Coriolis mass flow censor with extended range for a monopropellant micro propulsion system [PDF]
, 2013 We have designed and realised a micromachined micro Coriolis flow sensor for the measurement of hydrazine (N2H4, High Purity Grade) propellant flow in micro chemical propulsion systems.
Dijkstra, M.A. +5 more
core +10 more sources
Development of a Laser Micro-Thruster and On-Orbit Testing
Aerospace, 2023 Laser micro-thrust technology is a type of propulsion that uses a laser beam to ablate a propellant such as a metal or plastic. The ablated material is expelled out the back of the spacecraft, generating thrust.
Jifei Ye +8 more
doaj +1 more source
Simulating a Cyber-Attack on the Mass Thruster Controllers at Low-Speed Motion
Promet (Zagreb)The aim of this paper is to highlight the vulnerability of Maritime Autonomous Surface Ships (MASS) to cyber-attack and to illustrate, through a simulation experiment on a testbed, how to mitigate a cyber-attack on the MASS thruster controllers during ...
Igor ASTROV, Sanja BAUK
doaj +1 more source
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
FEBS Letters, EarlyView.Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman +2 more
wiley +1 more source