Results 41 to 50 of about 1,875 (170)

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

Advanced 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, Eleni Papadopoulou, Grigorios Kostopoulos, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria Gkara, Chara C. Mitropoulou, Nikos D. Lagaros   +8 more
wiley   +1 more source

Integrated monopropellant thruster [PDF]

, 1972
Application of vortex amplifier principles to throttling of monopropellant thrusters is described. Integration of flow control, catalyst bed, and thruster nozzle is accomplished by design of thruster. Diagrams of thrusters are provided to show details of
Mangion, C.
core   +1 more source

Sub-newton monopropellant thrusters for small spacecraft propulsion

, 2021
This thesis documents the design and testing of a sub-newton High Test Peroxide (HTP) monopropellant thruster architecture, suitable for micro and nanosatellite applications. The main goals were to demonstrate that a thruster targeting a 0.1 N thrust level could achieve a high performance, and to investigate the fundamental processes governing its ...
openaire   +2 more sources

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

Propellants, 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, Prakhar Jindal, Vineet Kumar Rathi   +2 more
wiley   +1 more source

Development of Electric and Chemical Microthrusters

International Journal of Aerospace Engineering, Volume 2011, Issue 1, 2011., 2011
The increasing application of microsatellites (from 10 kg up to 100 kg) as well as CubeSats for a rising number of various missions demands the development of miniaturized propulsion systems. Fotec and The University of Applied Sciences at Wiener Neustadt is developing a number of micropropulsion technologies including both electric and chemical ...
M. Tajmar, C. A. Scharlemann, Ikkoh Funaki   +2 more
wiley   +1 more source

Bioinspired Mechanisms and Actuation of Soft Robotic Crawlers

Advanced Science, Volume 12, Issue 16, April 24, 2025.
Researchers have been developing soft materials and robotic crawlers inspired by soft‐bodied animals to mimic effective crawling in complex environments. This review explores the state‐of‐the‐art in soft crawlers, highlighting the interaction between materials, crawling mechanisms, actuation, and applications. The review concludes by providing insights
Min Pan, Miaomiao Liu, Jiayi Lei, Yunyi Wang, Changhong Linghu, Chris Bowen, K. Jimmy Hsia   +6 more
wiley   +1 more source

COMPUTER DESIGN OF LOW POWER N2O MONOPROPELLANT THRUSTER [PDF]

Blucher Mechanical Engineering Proceedings, 2014
Development of computer model and preliminary design of the monopropellant (nitrous oxide) thruster that will be working under space vacuum conditions are presented in this paper. To perform such a design, two models have been developed, plug flow reactor and lumped thruster models.
openaire   +1 more source

On‐demand microwave growth of porosity within a granular composite energetic material: Void formation via a dielectric loss phase change binder additive for propellant burning rate control

Propellants, Explosives, Pyrotechnics, Volume 49, Issue 5, May 2024.
Abstract This study demonstrates, for the first time ever, the ability to grow, in an on‐command fashion, porosity within a granular composite energetic material to effect a change in energy output rate. Specifically, the study investigates the change in burning rates of ammonium perchlorate composite propellants as a result of porosity created in situ
Justin A. Lajoie, Brock Jones, Adam R. Lawrence, Stuart J. Barkley, Travis R. Sippel   +4 more
wiley   +1 more source

Innovative 3D numerical study of a catalyst bed and comparison with previous 2D and experimental studies

International Journal of Thermofluids
This paper analyzes the catalytic bed of a 10 (N) Liquid Monopropellant Thruster (LMT) in an innovative 3D numerical study. LMT includes an injector, a decomposition chamber with a catalytic bed, and a nozzle.
M.H. Mansuri Mughari, H. Naseh, S. Noori
doaj   +1 more source

Thermal Stress Analysis of Ceramic Pellets for Catalysis [PDF]

, 2010
One of the most critical phenomena that limits the lifetime of ceramic catalysts for H2O2 decomposition is represented by substrate break-up as a consequence of thermal shocking.
Cervone, A., D’Agostino, L., Pasini, A., Romeo, L., Torre, L.   +4 more
core   +1 more source