Discussion Overview
The discussion revolves around whether humans have successfully landed a rocket upright, with the nose up and thrusters down, similar to its launch position. Participants explore various examples from space missions, particularly focusing on the Apollo program and its lunar landings, while also considering definitions of "ground" and the criteria for what constitutes a successful landing.
Discussion Character
- Exploratory
- Debate/contested
- Technical explanation
Main Points Raised
- Some participants question if rockets have landed upright as they took off, referencing a SpaceX video.
- Others mention the Apollo missions (Apollo 11-17) as examples where rockets landed with the nose up, noting one failure that was not related to the landing attempt.
- There is a discussion about whether the Apollo Lunar Module (LM) counts as having landed upright, considering it took off from Earth before landing on the Moon.
- Some participants suggest that the Apollo LLRV does not count since it lacked rocket engines.
- Clarifications are made regarding the definition of "ground," with some questioning if the Moon qualifies as such.
- Participants suggest searching for vertical takeoff and landing (VTOL) and vertical takeoff vertical landing (VTVL) rockets for more examples.
- Humorous remarks are made about human creativity and potential mishaps in rocket landings.
Areas of Agreement / Disagreement
Participants express differing views on what constitutes a successful upright landing, with no consensus on whether the Apollo missions meet the criteria based on definitions of "ground" and the specifics of the landing process.
Contextual Notes
There are unresolved questions regarding the definitions and criteria for successful rocket landings, particularly concerning the Apollo missions and the distinction between lunar and terrestrial ground.