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OTRAG Rocket.pdf

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The burn time was dependent on the degree of filling of the tanks and the thrust and was<br />

20 to 150 seconds. Version 150 m for the 24 seconds were given for the 15 m version 120<br />

seconds. The specific impulse for the 24 m version was given by Kayser with 2648 m / s<br />

at 1 bar external pressure and 2913 m / s in a vacuum. However, these are values that<br />

were not found experimentally because it requires a set of effect occurs after Kayser<br />

information only in larger bundles. In the tests on the ground, the engine had a specific<br />

impulse of only 1800 m / s corresponding to about 2000-2100 m / s in a vacuum.

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