Results 31 to 40 of about 32,505 (164)

Thermal decomposition kinetics and combustion performance of paraffin-based fuel in the presence of CeO2 catalyst

FirePhysChem, 2023
In recent years, significant developments have been made in solid-fuel combustion. Paraffin-based fuels could be a potential solid fuel for hybrid and ramjet applications due to their high regression rate, low cost, and minimal environmental impact. This
Yash Pal, Sri Nithya Mahottamananda, Subha S, Sasi Kiran Palateerdham, Antonella Ingenito   +4 more
doaj   +1 more source

Small-Scale Static Fire Tests of 3D Printing Hybrid Rocket Fuel Grains Produced from Different Materials

Aerospace, 2019
The last decade has seen an almost exponential increase in the number of rocket launches for sounding missions or for delivering payloads into low Earth orbits.
Mitchell McFarland, Elsa Antunes
doaj   +1 more source

Experimental investigation of the axial oxidizer injectors geometry on a 1-kN paraffin-fueled hybrid rocket motor

FirePhysChem, 2021
The showerhead is the most common type of injector used in hybrid rocket motors due to its design and manufacture simplicity. The main drawback of the showerheads (SH) is the relatively low performance in terms of combustion efficiency because of the ...
M. Bouziane, A.E.M. Bertoldi, P. Hendrick, M. Lefebvre   +3 more
doaj   +1 more source

The catalysis effects of acetylacetone complexes on polymer matrix of HTPB-based fuels

FirePhysChem, 2021
The slow regression rate caused by the difficulty of pyrolysis can not meet the practical application requirements of hydroxyl-terminated polybutadiene (HTPB)-based fuels in hybrid rocket propulsion.
Hongsheng Yu, Xiaodong Yu, Suhang Chen, Wei Zhang, Luigi T. DeLuca, Ruiqi Shen   +5 more
doaj   +1 more source

On computation of solid fuel regression rate in ramjet combustor

Journal of Physics: Conference Series, 2017
Development of a solid fuel ramjets requires mathematical modeling of the solid fuel regression inside a combustor with accounting of solid fuel gasification and combustion processes and a numerical method to calculate parameters of these processes. This report presents a quasi-one-dimensional model of processes inside the solid fuel ramjet combustor ...
A V Razmyslov, L S Yanovskiy, P D Toktaliev   +2 more
openaire   +1 more source

Characterisation of paraffin-based hybrid rocket fuels loaded with nano-additives

Journal of Experimental Nanoscience, 2018
In this work, a new composition based on Paraffin wax and HTPB fuel, loaded with nanoparticles has been proposed for hybrid propulsion system. Lithium aluminium hydride (LiAlH4) and Magnesium hydride (MgH2) nanoparticles have been used as additives.
Md. Zishan Akhter, M. A. Hassan
doaj   +1 more source

Fuel Regression Rate Behavior of CAMUI Hybrid Rocket

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, SPACE TECHNOLOGY JAPAN, 2009
A series of static firing tests was conducted to investigate the fuel regression characteristics of a Cascaded Multistage Impinging-jet (CAMUI) type hybrid rocket motor. A CAMUI type hybrid rocket uses the combination of liquid oxygen and a fuel grain made of polyethylene as a propellant.
KANEKO, Yudai, ITOH, Mitsunori, KAKIKURA, Akihito, MORI, Kazuhiro, UEJIMA, Kenta, NAKASHIMA, Takuji, WAKITA, Masashi, TOTANI, Tsuyoshi, OSHIMA, Nobuyuki, NAGATA, Harunori   +9 more
openaire   +2 more sources

Demonstration of dual-thrust capability in hybrid rockets using multi-layered tubular fuel grains

FirePhysChem
This study demonstrates the thrust modulation capabilities of a hybrid rocket motor employing a Multi-Layered Tubular (MLT) fuel grain. The MLT configuration involves arranging the fuel grains with distinct regression rates as layers.
Mengu Dinesh, Sachin Sonage, Kumar Nagendra   +2 more
doaj   +1 more source

Modeling surface fire rate of spread within a thinned Anatolian black pine stand in Turkey

Forest Systems, 2018
Aim of the study: To develop regression models for estimating the rate of surface fire spread in a thinned even-aged black pine stand (Pinus nigra J.F. Arnold subsp. nigra var. caramanica (Loudon) Rehder).
Omer Kucuk, Ertugrul Bilgili, Rifat Uzumcu   +2 more
doaj   +1 more source

Parameters Influencing Regression Rate of Solid Rocket Fuels

International Journal of Aeronautical Science & Aerospace Research, 2019
This review paper provides a compilation of works from 1966 to 2018 pertaining to the study of altering the burn rate for solid fuel rockets. This paper serves to catalog the current state of research on burn rate altering additives and other common methods for tailoring the burn rate of solid rocket fuels for specific applications. Solid rocket motors
Osemwengie O, Abdallah SA, Morgan HP, Fanegan JO   +3 more
openaire   +2 more sources