翻訳と辞書 Words near each other ・ Delta-class submarine ・ Delta-DOR ・ Delta-functor ・ Delta-Gnom ・ Delta-guaiene synthase ・ Delta-K ・ Delta-like 1 ・ Delta-P ・ Delta-palutoxin ・ Delta-ring ・ Delta-S ・ Delta-sarcoglycan ・ Delta-sigma modulation ・ Delta-thalassemia ・ Delta-Tocopherol ・ Delta-v ・ Delta-v (disambiguation) ・ Delta-V (musical group) ・ Delta-v (physics) ・ Delta-v budget ・ Delta-Valerolactone ・ Delta-Viniferin ・ Delta-wye transformer ・ Delta/Delta Heritage Air Park ・ Delta/Greely School District ・ Delta1 Canis Minoris ・ Delta1 Chamaeleontis ・ Delta1 Gruis ・ Delta1 Lyrae ・ Delta1-piperideine-2-carboxylate reductase 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 Delta-v ： ウィキペディア英語版 Delta-v Delta-''v'' (literally "change in velocity"), symbolised as Δ''v'' and pronounced ''delta-vee'', as used in spacecraft flight dynamics, is a measure of the impulse that is needed to perform a maneuver such as launch from, or landing on a planet or moon, or in-space orbital maneuver. It is a scalar that has the units of speed. As used in this context, it is ''not'' the same as the physical change in velocity of the vehicle. Delta-''v'' is produced by reaction engines, such as rocket engines and is proportional to the thrust per unit mass, and burn time, and is used to determine the mass of propellant required for the given maneuver through the Tsiolkovsky rocket equation. For multiple maneuvers, delta-''v'' sums linearly. For interplanetary missions delta-''v'' is often plotted on a porkchop plot which displays the required mission delta-''v'' as a function of launch date. ==Definition== :$\backslash Delta\; =\; \backslash int\_^\; \}\backslash ,\; dt$ where :''T'' is the instantaneous thrust :''m'' is the instantaneous mass 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「Delta-v」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.