Results 41 to 50 of about 4,212 (194)

Transverse relaxation characteristic and stress relaxation model considering molecular chains of HTPB coating based on pre-strained thermal aging

open access: yesDefence Technology, 2021
In order to accurately describe the transverse relaxation characteristic and stress relaxation modulus of HTPB coating during pre-strain thermal aging process, a one month thermal aging test was carried out at 70 °C with pre-strain of 0%, 3%, 6% and 9 ...
Yong-qiang Du   +3 more
doaj   +1 more source

Combustion of HTPB-based solid fuels containing Viton-coated Boron for hybrid rocket applications

open access: yesFirePhysChem
The performance of hybrid rocket propulsion systems can be significantly enhanced by incorporating metal additives in solid fuels. This study investigates the ignition, combustion, and regression rate of hydroxyl‑terminated polybutadiene (HTPB)-based ...
Sri Nithya Mahottamananda   +6 more
doaj   +1 more source

Study on the interfacial interaction between ammonium perchlorate and hydroxyl-terminated polybutadiene in solid propellants by molecular dynamics simulation

open access: yese-Polymers, 2022
The interfacial interaction between the main oxidant filler ammonium perchlorate (AP) and hydroxyl-terminated polybutadiene (HTPB) matrix in AP/HTPB propellants were studied via an all-atom molecular dynamics simulation.
Dong Ge   +6 more
doaj   +1 more source

Experimental investigation of paraffin-based fuels for hybrid rocket propulsion [PDF]

open access: yes, 2013
Solid fuels for hybrid rockets were characterized in the framework of a research project aimed to develop a new generation of solid fuels, combining at the same time good mechanical and ballistic properties.
F. Maggi   +4 more
core   +1 more source

Hydroxyl-terminated polybutadiene liner curing process monitoring using non-collinear ultrasonic wave mixing technique

open access: yesAIP Advances
The Hydroxyl-Terminated Polybutadiene (HTPB) liner in solid rocket motors is a viscoelastic material formed through the polymerization and gelation of HTPB and toluene diisocyanate.
Dawei Wang, Yuxin Xie, Xinyi Gao
doaj   +1 more source

Study on Thermal Degradation Characteristics and Regression Rate Measurement of Paraffin-Based Fuel

open access: yesEnergies, 2015
Paraffin fuel has been found to have a regression rate that is higher than conventional HTPB (hydroxyl-terminated polybutadiene) fuel and, thus, presents itself as an ideal energy source for a hybrid rocket engine.
Songqi Hu   +4 more
doaj   +1 more source

Properties of high cis-1,4 content hydroxyl-terminated polybutadiene and its application in composite solid propellants

open access: yesDefence Technology
In this paper, high cis-1,4 content hydroxyl-terminated polybutadiene (cis-HTPB) with different molecular weights was prepared through the oxidative cracking process using cis-butadiene rubber as raw material.
Deqian Meng   +4 more
doaj   +1 more source

Hybrid propulsion technology program: Phase 1. Volume 3: Thiokol Corporation Space Operations [PDF]

open access: yes
Three candidate hybrid propulsion (HP) concepts were identified, optimized, evaluated, and refined through an iterative process that continually forced improvement to the systems with respect to safety, reliability, cost, and performance criteria. A full
Schuler, A. L., Wiley, D. R.
core   +1 more source

Rheology of suspensions with aluminum nano-particles [PDF]

open access: yes, 2009
Nano-scale aluminum particles are innovative materials increasingly used in energetic formulations. In this contribution, the rheological behavior of suspensions with either paraffin oil or HTPB as the matrix fluid and nano-scale aluminum (ALEX) as the ...
Ulrich Förter-Barth, Ulrich Teipel
core  

The role of antioxidant on propellant binder reactivity during thermal aging [PDF]

open access: yesJournal of Aerospace Technology and Management, 2010
Thermal aging of hydroxy-terminated polybutadiene (HTPB) stabilized with 2,6-di(tert-butyl)hydroxytoluene (BHT) was carried out at 60°C from 1 to 11 weeks.
Luciene Dias Villar   +4 more
doaj  

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