Results 11 to 20 of about 60,988 (314)

Coupled Thermo-Structural Analysis Model of Solid Rocket Motor Nozzle considering the Variation of Friction Coefficient under Operating Conditions

open access: yesInternational Journal of Aerospace Engineering, 2022
Multi-interface is a typical feature of solid rocket motor nozzles, and the interface evolution law is an important aspect to analyze the thermo-structural response of solid rocket motor nozzles.
Lin Sun   +4 more
doaj   +1 more source

CD8+ T cell memory is sustained in mice by hepatic stellate cells

open access: yesHepatology, EarlyView., 2022
HSC role in memory CD8+ T cell maintenance. Abstract Background and Aims Long‐lasting immunological memory is the ultimate goal of vaccination. Homeostatic maintenance of memory CD8+ cytotoxic T cells (MemCD8TCs) is thought to be mediated by IL‐15/IL‐15R heterodimer (15HD)‐expressing myeloid cells.
Yi‐Ting Chen   +4 more
wiley   +1 more source

Computational analysis of rocket-assisted projectile trajectory [PDF]

open access: yesScientific Technical Review
A computational analysis was carried out in order to study the effect of solid rocket motor operating parameters on the trajectory elements of 155mm rocket-assisted projectile. Two numericalsolutions have been programmed for this purpose.
Ferfouri Abdellah   +4 more
doaj   +1 more source

THE DATA ACQUISITION ROLE ON STATIC TEST FOR VALIDATION OF RX320 ROCKET MOTOR DESIGN

open access: yesSpektra: Jurnal Fisika dan Aplikasinya, 2021
Data Acquisition System has a significant role, especially in static testing of a rocket, determining whether a rocket is declared eligible to fly or not based on the static rocket test.
Setiadi Setiadi   +3 more
doaj   +1 more source

Vibration Disturbance Damping System Design to Protect Payload of the Rocket

open access: yesJournal of Mechatronics, Electrical Power, and Vehicular Technology, 2012
Rocket motor generates vibrations acting on whole rocket body including its contents. Part of the body which is sensitive to disturbance is the rocket payload. The payload consists of various electronic instruments including: transmitter, various sensors,
Sutisno Sutisno, Andreas Prasetya Adi
doaj   +1 more source

Regarding the perturbed operating process of DB propellant rocket motor at extreme initial grain temperatures [PDF]

open access: yesINCAS Bulletin, 2012
Despite many decades of study, the combustion instability of several DB propellants is still of particular concern, especially at extreme grain temperature conditions of rocket motor operating.
Ioan ION, Titica VASILE, Doru SAFTA
doaj   +1 more source

Development of Technology and Ballistic Research of the Propulsion Unit for 122 mm Rocket Missile with an Extended Range [PDF]

open access: yesProblemy Mechatroniki, 2015
The paper presents the results of ballistic studies on the demonstrator missile 122 mm rocket motor of an extended range with the heterogeneous solid propellant.
Bogdan FLORCZAK   +2 more
doaj   +1 more source

Design of shoulder: Launched unguided rocket with thermobaric warhead [PDF]

open access: yesScientific Technical Review, 2015
This paper presents a calculation methodology of geometrical and mass parameters for shoulder-launched rocket with thermobaric warhead. An optimization of design rocket parameters for specified tactical and technical requirements is carried out by the ...
Jovančić Siniša, Simić Danica
doaj  

Multi-Objective, Multi-Disciplinary Design Optimization and Multi-Attribute Evaluation of Hybrid Rocket Motors Used for Manned Lunar Lander

open access: yesAerospace, 2023
This paper proposed a multi-objective, multi-disciplinary design optimization and multi-attribute evaluation method for the manned lunar lander descent stage.
Yang Liu   +5 more
doaj   +1 more source

CFD Analysis of a Solid Propellant Retro Rocket Motor using Ansys Fluent [PDF]

open access: yesE3S Web of Conferences, 2020
A Solid propellant Retro Rocket Motor with a C-D Nozzle is analyzed using Ansys Fluent 17.1 .Steady State analysis of a retro rocket motor has been done for Viscous models like Inviscid and k-ɛ (Realizable) with air and gas as working fluids.
Anil Hemanth Varada, Jyothi U.S
doaj   +1 more source

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