Results 91 to 100 of about 1,871 (299)

Green Propellant Thruster Design for LEO Platforms Active Debris Removal [PDF]

open access: yes, 2018
Great attention is currently paid to space debris mitigation with particular attention to the Low Earth Orbit’s region, being the most overfilled orbit. The present study consists of the design of a monopropellant thruster powered by green propellant (i ...
Angelo Pasini   +3 more
core  

Kinetic modeling of jet propellant-10 pyrolysis

open access: yes, 2014
A detailed kinetic model for the thermal decomposition of the advanced fuel Jet-Propellant 10 (JP-10) was constructed using a combination of automated mechanism generation techniques and ab initio calculations.
Guy B. Marin (1327161)   +22 more
core   +1 more source

A Review on Sensor Technologies, Control Approaches, and Emerging Challenges in Soft Robotics

open access: yesAdvanced Robotics Research, EarlyView.
This review provides an introspective of sensors and controllers in soft robotics. Initially describing the current sensing methods, then moving on to the control methods utilized, and finally ending with challenges and future directions in soft robotics focusing on the material innovations, sensor fusion, and embedded intelligence for sensors and ...
Ean Lovett   +5 more
wiley   +1 more source

Characterization of a green electric solid propellant for electric propulsion

open access: yes, 2019
Electric solid propellants are advanced solid chemical rocket propellants that can be controlled (ignited, throttled and extinguished) through the application and removal of an electric current.
Glascock, Matthew Scott
core  

High-Performance Green Hydrazine-Based Propellant for Small Spacecraft

open access: yes
Whereas the last decade has seen a notable expansion in the number of small spacecraft on orbit, a lack of high-total-impulse chemical propulsion options continues to hamper their complete proliferation into mission arenas requiring dynamic maneuvering ...
Rovey, Joshua L.   +4 more
core   +1 more source

Effect of the distant position of a propellant valve on the startup delay of a “green”-propellant thruster

open access: yesTechnical mechanics
In recent years, the leading space countries have paid much attention to a search for and the application of new toxically safe propellants for spacecraft thrusters. A water solution of an ion substance, a fuel, and a stabilizer is used as a “green” propellant. Its feature is a significant increase in the temperature in the thruster reaction chamber in
Yu.V. Knyshenko, V.I. Shcherbakov
openaire   +1 more source

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

open access: yesAdvanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang   +14 more
wiley   +1 more source

Green Propellant Test Capabilities of the Altitude Combustion Stand at the NASA Glenn Research Center

open access: yes, 2016
The NASA Glenn Research Center (GRC) is committed to providing simulated altitude rocket test capabilities to NASA programs, other government agencies, private industry partners, and academic partners.
Arnett, Lori A., Kubiak, Jonathan M.
core  

A propellant formulation study for a green approach to solid rocket propulsion

open access: yes, 2021
LAUREA MAGISTRALELa propulsione solida spaziale per i lanciatori pesanti si fonda sulla combinazione di HTPB/AP/Al. Tra tutti i propellenti solidi, questa formulazione è considerata lo stato dell’arte per via del suo alto impulso specifico, basso costo ...
SONVICO, GIOVANNI MARIA
core  

DEVELOPMENT OF A TEST INFRASTRUCTURE FOR A NEURAL NETWORK CONTROLLED GREEN PROPELLANT THRUSTER [PDF]

open access: yes, 2022
This paper describes the setup of a test facility for various modern control methods for a green propellant thruster. The overarching goal is the intelligent control of a rocket engine, for example with a neural network. Therefore, a flexible and
Dresia, Kai   +4 more
core  

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