By October 1964, Grumman's lunar module design had grown to 33,000 pounds, up from the original 22,000-pound, two-stage design.
Notes on verification
Multiple independent sources corroborate the general trend of lunar module weight growth from ~22,000 lbs to roughly 30,000-33,000 lbs by late 1964, though exact figures and dates vary slightly (~1,000 lbs, ~1 month) between sources, typical for evolving engineering estimates. [tier=silver indep_score=0.833 clusters=3 claim_tier=notable]
Sources
- The First True Spaceship (seed:science_and_space)
- https://airandspace.si.edu/stories/editorial/did-brooklyn-dodgers-help-get-us-moon (corroboration)
- https://h2g2.com/approved_entry/A3770192 (corroboration)
- https://www.dailyrepublic.com/state-nation-world/made-in-bethpage-how-grumman-landed-the-lunar-module-contract-newsday/article_b1255455-54e7-5b5e-a3a6-8bd9dfebe91c.html (corroboration)