> N1 had ablative engines, which could not be test-fired on Earth Why can't they be? NASA seems to test them on Earth. https://ntrs.nasa.gov/api/citations/1996

> N1 had ablative engines, which could not be test-fired on Earth Why can't they be? NASA seems to test them on Earth. https://ntrs.nasa.gov/api/citations/19960007443/downloads/19960007443.pdf https://ntrs.nasa.gov/api/citations/19960007443/downloads/19...