GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW) | ||||||
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07:22 Jun 2, 2013 |
English to Arabic translations [Non-PRO] Science - Chemistry; Chem Sci/Eng / material safety data sheet | |||||||
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| Selected response from: Ahmed Ahmed Saudi Arabia Local time: 03:56 | ||||||
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3 +1 | خليط/مزيج من الهيدروكربون الدافع |
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خليط/مزيج من الهيدروكربون الدافع Explanation: hydrocarbon propellant blend خليط من الهيدروكربون الدافع -------------------------------------------------- Note added at 27 mins (2013-06-02 07:49:30 GMT) -------------------------------------------------- A propellant is a chemical which is used in the production of energy and pressurized gas that is used to create movement of a fluid or to generate propulsion of a vehicle or projectile or other object. Common propellants are energetic materials and consist of a fuel; like gasoline, jet fuel, rocket fuel, and an oxidizer. Propellants are burned or otherwise decomposed to produce the propellant gas. Other propellants are simply liquids that can readily be vaporized. In rockets and aircraft, propellants are used to produce a gas that can be directed through a nozzle, thereby producing thrust. http://en.wikipedia.org/wiki/Propellant Chemically, a hydrocarbon propellant will be less efficient than hydrogen fuel because hydrogen releases more energy per unit mass during combustion, enabling a higher exhaust velocity. This is, in part, a result of the high mass of carbon atoms relative to hydrogen atoms. http://en.wikipedia.org/wiki/RP-1 و يتم تقييم أداء الصواريخ بنسبة قوة الدفع إلى وزن الصاروخ و يقيم المحرك عن طريق معرفة قوة الدفع التي نحصل عليها مقابل حرق وحدة معينة من الدافع Propellant (الوقود+المؤكسد). http://rocketir.blogspot.com/p/blog-page_1185.html |
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