Landspeed volume weight Buoyancy

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Discussion Overview

The discussion revolves around the concept of landspeed required for an object, particularly vehicles like dirt bikes, to stay above water. Participants explore the relationship between speed, area, weight, and buoyancy, while seeking equations and methods to quantify these factors.

Discussion Character

  • Exploratory, Debate/contested, Conceptual clarification

Main Points Raised

  • Some participants inquire about the speed a vehicle needs to maintain buoyancy above water, referencing observations of dirt bikes performing this action.
  • Others argue that the question is complex and depends on various factors, including the vehicle's size, shape, and movement mechanism.
  • One participant mentions that while a study on humans suggests interesting results, it may not apply on Earth but could be relevant for the Moon.
  • Another participant emphasizes the importance of hull shape and surface roughness in determining the necessary speed for buoyancy, indicating the problem's complexity.
  • There is a reference to a specific instance of a dirt bike riding a wave, with a suggestion that modifications, such as added fins, contribute to the vehicle's ability to stay above water.

Areas of Agreement / Disagreement

Participants generally agree that the question is difficult and multifaceted, with multiple competing views on the factors influencing buoyancy and speed. The discussion remains unresolved regarding the specific equations or methods to calculate the necessary landspeed.

Contextual Notes

Limitations include the dependence on various assumptions about vehicle design, environmental conditions, and the lack of a clear mathematical framework presented in the discussion.

Alasmic
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Finding the landspeed a object needs correlating with its area and weight in volume that a object needs to stay above water looking for the equation and plug in methods
 
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Please post an intelligible question.
 
SteamKing said:
Please post an intelligible question.
I want to know how fast a vehicle needs to travel in order for it to stay above water.. I seen dirt bikes do it
 
It depends on many details of the vehicle - not just its size and the parts that hit the water, but also how it moves (e.g. wheels, legs, something else).
For humans, this study is interesting. It doesn't work on Earth, but it should work on Moon.
 
There are a huge number of variable involved here. The most important one is the shape of the hull. Even given that, there are problems with the "roughness" of the hull. This is an extremely difficult, complicated problem.
 
Alasmic said:
I seen dirt bikes do it

Not for long! o0)
 
They see me driving - They hatin'.

Well, the bike had fins added to create more lift.
The first wave riding scene looks quite dangerous for all the others in the water.
 

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