 :this article is about a rocket; for clouds, visit cumulus. thumb|kumulus rocket on display in hermann-oberth-museum, feucht, germany kumulus is the name of a rocket of the "hermann-oberth-gesellschaft e.v.". the first kumulus rocket was launched on december 20, 1960 near cuxhaven. a kumulus rocket is on display at the hermann oberth space travel museum in feucht. ==technical data== * diameter: 15&nbsp;cm * length: 3 m * thrust: 5&nbsp;kn * maximum height: 20&nbsp;km * payload: 5&nbsp;kg (for 20&nbsp;km altitude) * launch mass: 60&nbsp;kg * mass without fuel and payload: 28&nbsp;kg 
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