کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8056918 | 1519953 | 2014 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gravity-assist engine for space propulsion
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کلمات کلیدی
نیروی کاوشگر هواپیما، حفاظت از حرکت زاویه ای، قفل کششی، تعاملات سه بدن، شبیه سازی عددی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی هوافضا
چکیده انگلیسی
As a possible alternative to rockets, the present article describes a new type of engine for space travel, based on the gravity-assist concept for space propulsion. The new engine is to a great extent inspired by the conversion of rotational angular momentum to orbital angular momentum occurring in tidal locking between astronomical bodies. It is also greatly influenced by Minovitch׳s gravity-assist concept, which has revolutionized modern space technology, and without which the deep-space probes to the outer planets and beyond would not have been possible. Two of the three gravitating bodies in Minovitch׳s concept are in the gravity-assist engine discussed in this article replaced by an extremely massive 'springbell׳ (in principle a spinning dumbbell with a powerful spring) incorporated into the spacecraft itself, and creating a three-body interaction when orbiting around a gravitating body. This makes gravity-assist propulsion possible without having to find suitably aligned astronomical bodies. Detailed numerical simulations are presented, showing how an actual spacecraft can use a ca 10-m diameter springbell engine in order to leave the earth׳s gravitational field and enter an escape trajectory towards interplanetary destinations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Astronautica - Volume 99, JuneâJuly 2014, Pages 99-110
Journal: Acta Astronautica - Volume 99, JuneâJuly 2014, Pages 99-110
نویسندگان
Arne Bergstrom,