出典:Wiktionary
出典:『Wiktionary』 (2026/05/07 20:10 UTC 版)
rockoon (plural rockoons)
出典:Wikipedia
出典:『Wikipedia』 (2011/05/06 12:10 UTC 版)
A rockoon (from rocket and balloon) is a solid fuel sounding rocket that, rather than being immediately lit while on the ground, is first carried into the upper atmosphere by a gas-filled balloon, then separated from the balloon and automatically ignited. This allows the rocket to achieve a higher altitude, as the rocket does not have to move under power through the lower and thicker, layers of the atmosphere.