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A comment on NASA Validates Revolutionary Propulsion Design for Deep Space Missions. Parent comment

Re:NASA Validates Revolutionary Propulsion Design for Deep S... by WalterBright on Sunday April 02, 2023 @12:32AM (#35407185)
Other ways are:

1. air launch, which boils down to using the O2 in the air rather than carrying it with you

2. mass driver, which needs to be in a vacuum

3. gravity slingshots

But, yeah, we need a fusion drive.

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Re:NASA Validates Revolutionary Propulsion Design for Deep S... by fbdab103 on Sunday April 02, 2023 @02:02AM (#35407651)
>2. mass driver, which needs to be in a vacuum

Project HARP[0] disagrees. Launched a payload 110 miles (177km) into space using a 120 foot (36m) long cannon. This was in the 1960s.

[0] https://en.wikipedia.org/wiki/Project_HARP

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Re:NASA Validates Revolutionary Propulsion Design for Deep S... by WalterBright on Sunday April 02, 2023 @02:59AM (#35407913)
It didn't achieve orbit.
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