fa بررسی تاثیر میزان و اندازه ذرات AP و RDX بر سرعت سوزش و خواص مکانیکی نوعی سوخت XLDB با دود کاهش یافته پیشرانه پیشرانه پژوهشي Research <em><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 9.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US">در این مقاله طراحی و تولید</span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"> فرمولاسیون­های مختلف از نوعی سوخت دوپایه شبکه­ای کم دود </span><span lang="FA" dir="rtl" style="FONT-SIZE: 8pt FONT-FAMILY: "B Nazanin" mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US">( </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">XLDB</span><span dir="rtl"></span><span dir="rtl" style="FONT-SIZE: 8pt FONT-FAMILY: "B Nazanin" mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> </span><span lang="FA" dir="rtl" style="FONT-SIZE: 8pt FONT-FAMILY: "B Nazanin" mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US">)</span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"> با هدف بهینه‌سازی عملکرد بالستیکی و مکانیکی مورد بررسی قرار گرفته ­است. سوخت </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">XLDB</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> تولید شده شامل نوعی بایندر پلی اورتانی تحت عنوان پلی کاپرولاکتون می­باشد و از ترکیبات آمونیوم پرکلرات </span><span lang="AR-SA" dir="rtl" style="FONT-SIZE: 8pt FONT-FAMILY: "B Nazanin" mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">(</span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">AP</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span>) و </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">RDX</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> به عنوان اکسید‌کننده در آن استفاده شده ­است. ترکیبات مختلفی از این سوخت به منظور بررسی تاثیر میزان </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">AP</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> و </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">RDX</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> برایمپالس ویژه، سرعت سوزش، خواص مکانیکی نظیر مدول الاستیسیته و تنش تسلیم طراحی و تولید شده است. نتایج بدست آمده از انجام تست­ها در این تحقیق بیانگر این مطلب است که با افزایش میزان </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">AP</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> از 10% تا 20% و کاهش </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">RDX</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> از 50% به 40%، میزان سرعت سوزش در فشارهای مختلف دستخوش تغییرات زیادی می­شود. درتست­های انجام شده، جایگزینی</span><span lang="FA" dir="rtl" style="FONT-SIZE: 8pt FONT-FAMILY: "B Nazanin" mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US"> </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">RDX</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> با </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">AP</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> منجر به کاهش توان نمایی سرعت سوزش (</span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-size: 10.0pt mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">n</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span>) از مقادیر بالای 9/0 به کمتر از آن و افزایش ایمپالس ویژه (تقریبا ً4%) شده ­است. در ادامه با انجام تست­های تکمیلی، نقش اندازه ذرات </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">AP</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> و </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">RDX</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> بر روی سرعت سوزش و خواص مکانیکی بررسی شده ­است. کاهش اندازه ذرات </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-size: 10.0pt mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">AP</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> تا 5 میکرون به تنهایی موجب کاهش میزان توان نمایی از مقادیر 9/0</span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-size: 10.0pt mso-bidi-font-family: 'B Nazanin' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US">n ></span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> به 75/0 ></span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-size: 10.0pt mso-bidi-font-family: 'B Nazanin' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US">n</span><span dir="rtl"></span><span dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> </span><span dir="ltr"></span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-size: 10.0pt mso-bidi-font-family: 'B Nazanin' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="ltr"></span><font face="Times New Roman"><span style="mso-spacerun: yes"><font size="2"> </font></span><</font></span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> 65/0 می­شود. علاوه بر این، استفاده از دوسایز ریز و درشت </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-size: 10.0pt mso-bidi-font-family: 'B Nazanin' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US">RDX</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> با نسبت (70/30) افزایش چشم‌گیری در بهبود خواص مکانیکی سوخت داشته ­است. نتایج بدست آمده از این تحقیق بیانگر این مطلب می­باشد که استفاده از اندازه ذرات ریز </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">AP</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> و </span><span style="FONT-SIZE: 8pt FONT-FAMILY: "Times New Roman","serif" mso-fareast-font-family: 'Times New Roman' mso-bidi-font-family: 'B Nazanin' mso-bidi-language: AR-SA mso-ansi-language: EN-US mso-fareast-language: EN-US">RDX</span><span dir="rtl"></span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 8.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"><span dir="rtl"></span> موجب بهبود عملکرد بالستیکی و انجام تست­های ایمن و دور ازانفجار در موتورهای حاوی این سوخت می­شود.</span><span lang="FA" dir="rtl" style="FONT-SIZE: 10pt FONT-FAMILY: "B Nazanin" mso-ansi-font-size: 9.0pt mso-ascii-font-family: 'Times New Roman' mso-fareast-font-family: 'Times New Roman' mso-hansi-font-family: 'Times New Roman' mso-bidi-language: FA mso-ansi-language: EN-US mso-fareast-language: EN-US"> </span></em> <p> <i> In this paper the Cross-linked double base propellant (XLDB) based on polyurethanes comprised of polycaprolactone (PCP) as binder and ammonium perchlorate (AP) and RDX as solid oxidizer have been prepared and characterized. Propellant burning rate were determined by the strand burner method (Crawford bomb). In the AP-based composition, the energy is enhanced and the pressure exponent reduced with increasing the AP content. When the AP is partially replaced by RDX, Isp is improved and the pressure exponent is decreased. The role of AP and RDX particle size was studied on the burning rate and mechanical properties of propellant. It will be find that the value of n (power low) decreases from 0.9 to 0.75 when the AP content increases from 10% to 20% and RDX amount decrease form 50% to 40%. By varying the AP particle size and RDX particle size up to 5 m, the exponent pressure reduce to 0.65< n <0.75. The mechanical properties of this propellant has been increased significantly by using of coarse & fine particle size of RDX (70/30).The result of this study revealed that fine size of RDX and AP (2- 10 m) may be the most suitable for this propellant to meet desired burning rate for satisfactory ballistics utilization. </i></p> سوخت XLDB، پلی کاپرولاکتون، آمونیوم پرکلرات، RDX، ایمپالس ویژه، توان نمایی XLDB Propellant, Polycaprolactone, RDX, Pressure Exponent, Ammonium Perchlorate, Specific Impulse 53 58 http://isaem.ir/browse.php?a_code=A-10-353-17&slc_lang=fa&sid=1 S. Abbasi سعید عباسی saaid_abbasi@yahoo.com 10031947532846002178 10031947532846002178 Yes سازمان صنایع هوافضا M.R Mahmodinezhad محمود رضا محمودی نژاد 10031947532846002179 10031947532846002179 No