کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8056151 1519928 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Control of asteroid retrieval trajectories to libration point orbits
ترجمه فارسی عنوان
کنترل مسیرهای بازیابی سیارک به مدار نقطه لابرفت
کلمات کلیدی
سیارک، بازیابی، کنترل، مسیر مدارهای نقطهای نقطه، منتقل کردن،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
چکیده انگلیسی
The fascinating idea of shepherding asteroids for science and resource utilization is being considered as a credible concept in a not too distant future. Past studies identified asteroids which could be efficiently injected into manifolds which wind onto periodic orbits around collinear Lagrangian points of the Sun-Earth system. However, the trajectories are unstable, and errors in the capture maneuver would lead to complete mission failure, with potential danger of collision with the Earth, if uncontrolled. This paper investigates the controllability of some asteroids along the transfers and the periodic orbits, assuming the use of a solar-electric low-thrust system shepherding the asteroid. Firstly, an analytical approach is introduced to estimate the stability of the trajectories from a dynamical point of view; then, a numerical control scheme based on a linear quadratic regulator is proposed, where the gains are optimized for each trajectory through a genetic algorithm. A stochastic simulation with a Monte Carlo approach is used to account for different perturbed initial conditions and the epistemic uncertainty on the asteroid mass. Results show that only a small subset of the considered combinations of trajectories/asteroids are reliably controllable, and therefore controllability must be taken into account in the selection of potential targets.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Astronautica - Volume 126, September–October 2016, Pages 342-353
نویسندگان
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