کاربرد‌های روش فرا صوت در ارزیابی موتور های پیشرانه جامد(علمی-ترویجی)

پیشرانه های ژل(علمی-ترویجی)

آزمون های غیرمخرب در پیشرانه های جامد (علمی-ترویجی)

Non-destructive testing methods are used to detecting defects in materials and evaluation of materials properties without causing changes to their usable properties. They are applied in industry to provide the assurance of high quality for semi-manufactured products, final products, devices and materials. Except of many civilian applications they are widely used in rocket and aviation industry ...

پایداری بالستیکی پیشرانه های تفنگی (علمی-ترویجی)

Generally, storage long time gun propellants cause negative ballistic effects. thus, retain ballistic stability of gun propellants during storage is one of the requirement new gun propellants. in this paper, deals with the ballistic stability conventional and new gun propellants. Therewithal, effective factors on ballistic stability and changing ballistic parameters (muzzle velocity & peak pres...

روش‌های کاهش حساسیت دمایی در پیشرانه های تفنگی (علمی-ترویجی)

مروری بر روش های بهبود خواص مکانیکی پیشرانه های جامد مرکب بر پایه GAP (علمی-ترویجی)

GAP propellants has good performance due to high energy of this polymer. Unfortunately, due to poor flexibility of GAP polymer and presence of rigid and conjugated azide side groups in its structure, they have poor mechanical properties especially under low temperatures. This article deals with methods of improving mechanical properties of solid composite propellants based on GAP through changi...

الاستومر اتیلن پروپیلن دی ان مونومر (epdm)به عنوان عایق موتور راکت پیشرانه های جامد (علمی-ترویجی)

In order to preserve structure and also achieve the desired thrust rocket motor, engine Case temperature should be prevented increase excess.This operation the can be done by Insulation. EPDM rubber because of advantages such as low specific weight, improve aging properties, as long as thermal insulation for solid propellant motors case bond Introduced and its properties are investigated in thi...