Results 31 to 40 of about 2,583,997 (256)

Numerical Simulation of the Gas Flow of Combustion Products from Ignition in a Solid Rocket Motor Under Conditions of Propellant Creep

Aerospace
The development of modern solid rocket technology with high-performance and high-loading ratio propellants places higher requirements on the safety and stability of the solid rocket motor.
Yin Zhang, Zhensheng Sun, Yu Hu, Yujie Zhu, Xuefeng Xia, Huang Qu, Bo Tian   +6 more
doaj   +1 more source

Solid Rocket Motor Design Using Hybrid Optimization

International Journal of Aerospace Engineering, 2012
A particle swarm/pattern search hybrid optimizer was used to drive a solid rocket motor modeling code to an optimal solution. The solid motor code models tapered motor geometries using analytical burn back methods by slicing the grain into thin sections ...
Kevin Albarado, Roy Hartfield, Wade Hurston, Rhonald Jenkins   +3 more
doaj   +1 more source

Variability analysis of ABS solid fuel manufactured by fused deposition modeling for hybrid rocket motors

Journal of Mechanical Engineering and Sciences, 2021
The process of fused deposition material (FDM) was used to manufacture propellant grains of Acrylonitrile Butadiene Styrene (ABS) as novel rocket fuel grain, with three types of geometry in the burning port.
Jose Alejandro Urrego, Fabio Arturo Rojas, Jaime Roberto Muñoz   +2 more
doaj   +1 more source

A numerical method for solid propellant grain design [PDF]

Scientific Technical Review, 2018
In this study, a grain burnback analysis for an Anchor solid propellant grain geometry for a rocket motor was done. The design process involves parametric modeling of the geometry in using PTC Creo software through dynamic variables that define the ...
Tanaskovski Bojan, Nešić Jovica, Jelisavac Ljiljana, Bogdanov Jovica   +3 more
doaj  

Parameters Affecting the Erosive Burning of Solid Rocket Motor

MATEC Web of Conferences, 2018
Increasing the velocity of gases inside solid rocket motors with low port-to-throat area ratios, leading to increased occurrence and severity of burning rate augmentation due to flow of propellant products across burning propellant surfaces (erosive ...
Abdelaziz Almostafa, Guozhu Liang, Elsayed Anwer   +2 more
doaj   +1 more source

A Cryopreservation‐Based Supply Chain Strategy for Extrusion Bioprinting in Space

Advanced Materials Technologies, EarlyView.
Extrusion bioprinting on crewed space platforms requires a bioink that stays functional along the logistic chain. Here, cells and biomaterial ink travel separately, the cells cryopreserved and the ink cold stored, and are combined only minutes before printing.
Johannes Windisch, Max von Witzleben, Richard Frank Richter, Finn Dani, Constantin Greil, Sarah Duin, Anja Lode, Michael Gelinsky   +7 more
wiley   +1 more source

Data Augmentation and Deep Learning Methods for Pressure Prediction in Ignition Process of Solid Rocket Motors

Machines
During the ignition process of a solid rocket motor, the pressure changes dramatically and the ignition process is very complex as it includes multiple reactions.
Huixin Yang, Pengcheng Yu, Yan Cui, Bixuan Lou, Xiang Li   +4 more
doaj   +1 more source

Gas-dynamic losses in the flow part of the channel charge of a solid-propellant rocket engine

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2022
Modern methods of computational fluid dynamics have been used to study flows with mass supply in axisymmetric channels of solid-propellant rocket motor charges.
A. N. A. N. Sabirzyanov, Ch. B. Khamatnurova, V. V. Kuzmin   +2 more
doaj   +1 more source

Engineering model for rocket exhaust plumes verified by CFD results [PDF]

, 2013
An engineering model (EM) is under development that describes the propagation of a rocket exhaust plume after the nozzle exit. The aim of this EM is to allow a fast analysis of the structure of the plume and the exhaust species within the plume.
Minutolo, Francesco, Grenard, Philippe, Bauer, Carola, Koch, Aaron   +3 more
core  

A Machine Vision‐Guided Microphysiological Platform With Automated Microfluidics Enables Longitudinal Biomarker Monitoring and Emulation of Translationally Relevant Exposure Scenarios

Advanced Science, EarlyView.
A pneumatically actuated multi‐tissue microphysiological system is integrated with AI‐based machine vision and automatic sampling and replenishment systems. The platform allows for the emulation of translationally relevant long‐term pharmacokinetic exposure scenarios for multiple weeks while enabling longitudinal monitoring of response biomarkers ...
Jibbe Keulen, Yi Zhong, Laura Dangel, Sonia Youhanna, Reza Zandi Shafagh, Jinhye Ryu, Domnica‐Gabriela Gurau, Mathias Haag, Thomas E. Mürdter, Yingxin Liang, Iro Beligiani, Nicole Ziegler, Sabine Willems, Nayere Taebnia, Wouter van der Wijngaart, Volker M. Lauschke   +15 more
wiley   +1 more source