طراحی، ساخت و ارزیابی دستگاه اندازه گیری زمان تاخیر در اشتعال به روش آزمون قطره

Ghanbari, Shahram; Mesdaghi, AliReza; Souri, Hossein; Abrishami, Fatemeh

Volume 16, Issue 1 (6-2021) مواد پرانرژی 2021, 16(1): 13-20 | Back to browse issues page

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Ghanbari S, Mesdaghi A, Souri H, Abrishami F. طراحی، ساخت و ارزیابی دستگاه اندازه گیری زمان تاخیر در اشتعال به روش آزمون قطره. مواد پرانرژی 2021; 16 (1) : 2
URL: http://isaem.ir/article-1-1374-en.html

طراحی، ساخت و ارزیابی دستگاه اندازه گیری زمان تاخیر در اشتعال به روش آزمون قطره

Shahram Ghanbari ^*

, AliReza Mesdaghi

, Hossein Souri

, Fatemeh Abrishami

MUT , SH_GHANBARI73@YAHOO.COM

Abstract: (1538 Views)

One of the properties for liquid bipropellants is their hypergolicity. The required quantity for this purpose is ignition delay time (IDT). IDT is classified into two classes: physical and chemical. The chemical ignition delay time is the time interval between the contact of fuel droplet - oxidizer surface and appearance of the first flame. The best laboratory method for measurement of chemical ignition delay time is drop test. According to effective parameters on the ignition delay time (such as oxidizer to fuel ratio, temperature and pressure) and followed the mechanical design, this system was manufactured with capability of temperature and the reaction chamber pressure adjustments. For calibration and standardization of the system, some liquid fuels (such as triethyl amine, unsymmetrical dimethyl hydrazine and Tonka-250 mixture) and some liquid oxidizers (like strong nitric acid and conventional oxidizer AK27) were used. Good repeatability and dispersity of the obtained results indicate the system accuracy.

Article number: 2

Keywords: Liquid propellant, Ignition delay time, Drop test, Calibration

Full-Text [PDF 1087 kb] (31 Downloads)

Type of Study: Research | Subject: پیشرانه
Published: 2021/12/28