نتایج جستجو برای: solid motor

تعداد نتایج: 347750  

2014
Patan Stalin

Design and analysis of propellant grain configurations for determination of the grain geometry which is an important and critical step in the design of solid propellant rocket motors, because accurate calculation of grain geometrical properties plays a vital role in performance prediction. The performance prediction of the solid rocket motor can be achieved easily if the burn back steps of the ...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 2012

Journal: :Central European Journal of Energetic Materials 2016

Journal: :Aerospace 2023

In this paper, the effects of geometry a submerged nozzle on damping characteristics are studied numerically. Firstly, numerical method is verified by previous experimental data. Then, mesh sensitivity analysis and monitor position independence carried out. Thirdly, systematically studied, focuses placed cavity size, convergent angle divergent angle. The pulse decay utilized to evaluate coeffic...

Journal: :Transactions of the Society of Instrument and Control Engineers 1985

Journal: :iranian journal of child neurology 0
hamid dalvand 1. department of occupational therapy, university of social welfare & rehabilitation sciences, tehran, iran leila dehghan 1. department of occupational therapy, university of social welfare & rehabilitation sciences, tehran, iran awat feizi 2. department of biostatistics and epidemiology, school of health, isfahan university of medical sciences, isfahan, iran seyed ali hosseini 1. department of occupational therapy, university of social welfare & rehabilitation sciences, tehran, iran suzan amirsalari new hearingtechnologies research center, department of pediatric neurology, faculty of medicine, baqiyatallah university of medical sciences, tehran, iran

how to cite this article: dalvand h, dehghan l, feizi a, hosseini sa, amirsalari s. iran j child neurol. 2013 autumn; 7(4):12-19. abstract objective the purpose of this study was to examine the impacts of hinged and solid anklefoot orthoses (afos) on standing and walking abilities in children with spastic diplegia. materials & methods in a quasi-experimental design, 30 children with spastic dip...

ژورنال: مواد پرانرژی 2015

Recent studies in solid composite propellants indicate that acceleration field cause to increase in burning rate. Relation between acceleration field and burning rate of propellant have an important effect on missile systems ballistic, especially on perforated grain missiles. If these effects has neglected in design phase, the pressure-time profile shifted out of acceptable rage and result in i...

2004
Richard Mattes

Energy-yielding fluids generally have lower satiety value than solid foods. However, despite high water content, soups reportedly are satiating. The mechanisms contributing to this property have not been identified and were the focus of this study. A within-subject design, preload study was administered to 13 male and 18 female adults (23.7F0.9 years old) with a mean body mass index (BMI) of 23...

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