Results 41 to 50 of about 3,658 (232)

Propellant-powered actuator for gas generators [PDF]

open access: yes, 1972
Hydrazine operated monopropellant generators are used for spacecraft rocket engines and propellant pressurization systems.
Makowski, M. J.
core   +1 more source

Servo-Stabilization of Low-Frequency Oscillations in a Liquid Bipropellant Rocket Motor [PDF]

open access: yes, 1953
The recent work of H. S. Tsien concerning the servostabilization of rocket motors is extended to the liquid bipropellant rocket motor. It is shown that by use of a feedback system containing a device to sense the combustion chamber pressure, a suitably ...
Cox, Dale W., Jr., Marble, Frank E.
core   +1 more source

Stimuli‐Responsive Electrofluidic Nervous System for Autonomous Soft Robots

open access: yesAdvanced Intelligent Systems, Volume 8, Issue 2, February 2026.
A stimuli‐responsive electrofluidic nervous system (SENS) is introduced to achieve sensing, signal processing, and decision‐making using soft materials. Comprising fluidic switches and electroactive actuators, SENS enables multimodal stimuli‐responsiveness and autonomous control in soft robots.
Dip Kumar Saha   +3 more
wiley   +1 more source

Thermal Decomposition of Ammonium Dinitramide (ADN) as Green Energy Source for Space Propulsion

open access: yesAerospace, 2023
The thermal decomposition of an ammonium dinitramide-based energetic compound was conducted for the first time using a dispersive inductively coupled plasma mass spectrometer, DTA-TG analysis, and pyrolysis at a constant temperature. A liquid droplet was
Zakaria Harimech   +4 more
doaj   +1 more source

Ignition system for monopropellant combustion devices Patent [PDF]

open access: yes, 1964
Ignition system for monopropellant combustion ...
Chilenski, J. J.
core   +1 more source

A Comment on the Computed Performance of Hexanitrogen C2h‐N6 as an Explosive

open access: yesPropellants, Explosives, Pyrotechnics, Volume 50, Issue 11-12, Page 6-11, December 2025.
ABSTRACT Although N6 is not stable at ambient temperature and pressure, the detonation performance (velocity, pressure, and heat of detonation) of molecular N6 was investigated using quantum chemical calculations and results from thermochemical calculations.
Thomas M. Klapötke   +2 more
wiley   +1 more source

Low thrust monopropellant engine [PDF]

open access: yes, 1981
The engine has a conventional body and nozzle configuration. The monopropellant fuel is fed into the thruster with dual injection tubes via an injector shell with dual spray jets. The spray jets are positioned generally opposed to each other.
Kuenzly, J. D.
core   +1 more source

A Comprehensive Review of Additive Manufacturing for Space Applications: Materials, Advances, Challenges, and Future Directions

open access: yesAdvanced Engineering Materials, Volume 27, Issue 22, November 2025.
Additive manufacturing (AM) transforms space hardware by enabling lightweight, high‐performance, and on‐demand production. This review outlines AM processes—powder bed fusion (PBF), directed energy deposition (DED), binder jetting (BJ), sheet lamination (SL), and material extrusion (ME)—applied to propulsion, satellite structures, and thermal devices ...
Stelios K. Georgantzinos   +8 more
wiley   +1 more source

Green Monopropellants

open access: yes, 2021
Green propellants are usually defined as low-hazard, low-toxicity, environmentally friendly propellants that are considered safe during various phases of spacecraft development, launch, and operations. Such propellants provide safe handling and storability when compared to conventional toxic propellants such as hydrazine and its derivatives that ...
Nosseir, Ahmed Emadeldin Sayed   +2 more
openaire   +1 more source

A Critical Review of Limitations and Challenges in Advancement of HNF as a Green Oxidizer for Composite Solid Propellant Formulations

open access: yesPropellants, Explosives, Pyrotechnics, Volume 50, Issue 7, Page 11-30, July 2025.
ABSTRACT Hydrazinium nitroformate (HNF) is a chlorine‐free, high‐energy oxidizer with promising applications in green propulsion systems. This review examines the thermal decomposition, combustion kinetics, flame structure, and behavior of HNF, while critically evaluating the current body of literature.
Lakshay Bansal   +2 more
wiley   +1 more source

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