Delta-V Calculator. (原始内容存档于March 12, 2000). Gives figures of 8.6 from Earth's surface to LEO, 4.1 and 3.8 for LEO to lunar orbit (or L5) and GEO resp., 0.7 for L5 to lunar orbit, and 2.2 for lunar orbit to lunar surface. Figures are said to come from Chapter 2 of Space Settlements: A Design Study美國國會圖書館的存檔,存档日期2001-11-28 on the NASA website [失效連結].
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Delta-V Calculator. (原始内容存档于March 12, 2000). Gives figures of 8.6 from Earth's surface to LEO, 4.1 and 3.8 for LEO to lunar orbit (or L5) and GEO resp., 0.7 for L5 to lunar orbit, and 2.2 for lunar orbit to lunar surface. Figures are said to come from Chapter 2 of Space Settlements: A Design Study美國國會圖書館的存檔,存档日期2001-11-28 on the NASA website [失效連結].
Delta-V Calculator. (原始内容存档于March 12, 2000). Gives figures of 8.6 from Earth's surface to LEO, 4.1 and 3.8 for LEO to lunar orbit (or L5) and GEO resp., 0.7 for L5 to lunar orbit, and 2.2 for lunar orbit to lunar surface. Figures are said to come from Chapter 2 of Space Settlements: A Design Study美國國會圖書館的存檔,存档日期2001-11-28 on the NASA website [失效連結].
Delta-V Calculator. (原始内容存档于March 12, 2000). Gives figures of 8.6 from Earth's surface to LEO, 4.1 and 3.8 for LEO to lunar orbit (or L5) and GEO resp., 0.7 for L5 to lunar orbit, and 2.2 for lunar orbit to lunar surface. Figures are said to come from Chapter 2 of Space Settlements: A Design Study美國國會圖書館的存檔,存档日期2001-11-28 on the NASA website [失效連結].