翻訳と辞書 Words near each other ・ Character Technical Director ・ Character theory ・ Character theory (media) ・ Character variety ・ Character-count integrity ・ Character-oriented terminal ・ Characterisation (law) ・ Characterisation of pore space in soil ・ Characteristic ・ Characteristic (algebra) ・ Characteristic 2 type ・ Characteristic admittance ・ Characteristic based product configurator ・ Characteristic class ・ Characteristic curve ・ Characteristic energy ・ Characteristic energy length scale ・ Characteristic equation ・ Characteristic equation (calculus) ・ Characteristic exponent ・ Characteristic function ・ Characteristic function (convex analysis) ・ Characteristic function (probability theory) ・ Characteristic impedance ・ Characteristic length ・ Characteristic mode analysis ・ Characteristic multiplier ・ Characteristic number (fluid dynamics) ・ Characteristic polynomial ・ Characteristic power series Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Characteristic energy ： ウィキペディア英語版 Characteristic energy In astrodynamics the characteristic energy ($C\_3\backslash ,\backslash !$) is a measure of the excess specific energy over that required to just barely escape from a massive body. The units are length2time−2, i.e. energy per mass. Every object in a 2-body ballistic trajectory has a constant specific orbital energy $\backslash epsilon$ equal to the sum of its kinetic and potential energy: :$\backslash tfrac\; v^2\; -\; \backslash mu/r\; =\; constant\; =\; \backslash tfrac\; C\_3$ where $\backslash mu\; =\; GM$ is the standard gravitational parameter of the massive body with mass $M$ and $r$ is the radial distance from its center. As an object in an escape trajectory moves outward, its kinetic energy decreases as its potential energy (which is always negative) increases, maintaining a constant sum. Characteristic energy can be computed as: :$C\_3=v\_^2\backslash ,\backslash !$ where $v\_$ is the asymptotic velocity at infinite distance. Note that, since the kinetic energy is $\backslash tfrac\; mv^2$, C3 is twice the specific orbital energy ($\backslash epsilon$) of the escaping object. ==Non-escape trajectory== A spacecraft with insufficient energy to escape will remain in a closed orbit (unless it intersects the central body) with: : 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Characteristic energy」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.