How does a boomerang behave in empty space and gravity?

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Discussion Overview

The discussion explores the behavior of a boomerang when thrown in a vacuum with gravitational influence, comparing its trajectory to that of a stone of equal mass thrown with the same force. The conversation touches on concepts of aerodynamics, lift, and the mechanics of boomerangs.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions whether a boomerang thrown in space with gravity would follow the same trajectory as a stone of equal mass thrown with equal force.
  • Another participant asserts that there are no aerodynamic forces in a vacuum that would differentiate the trajectories of the stone and the boomerang.
  • A participant references a cultural element related to boomerangs, suggesting a humorous take on their behavior.
  • There is a query about the mechanics that enable a boomerang to return.
  • One participant suggests that the returning behavior of a boomerang is related to wind and its shape.
  • Another participant elaborates that the asymmetrical design of a boomerang contributes to its returning behavior, specifically through asymmetrical lift, which is likened to the mechanics of a helicopter's rotor.
  • It is noted that without an atmosphere, a boomerang would follow a straight ballistic trajectory rather than returning.

Areas of Agreement / Disagreement

Participants express differing views on the mechanics of a boomerang's return, with some focusing on aerodynamic factors while others emphasize the role of design and lift. The discussion remains unresolved regarding the specific conditions under which a boomerang would return in a vacuum.

Contextual Notes

The discussion does not fully explore the assumptions regarding the effects of gravity in a vacuum or the definitions of aerodynamic forces in this context.

raaaid
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If a spaceship throws a boomerang in the vacuum of the space but with some gravity from earth. Will it have the same trayectory than if you throw a stone of equal mass than the boomerang with equal force?
thanks
 
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Yup. There are no areodynamic forces that would make the stone and boomerang's trajectories any different.

- Warren
 
As Rolf Harris sang: "My bommerang won't come back".
 
What makes a boomerang return?
 
You might post a new thread on this, but it has to do with the wind and their shape.
 
Asymmetrical design (it's a bit crook one way).
 
Yes, it is asymmetry that makes them return, but not the asymmetry of their crooked design. Rather, it is asymmetrical lift. Like the rotary wing of a helicopter, when the boomerang is rotating one side (the side going into the wind) generates more lift than the other. This side rises up, causing the entire device to "bank". What aviators refer to as "the horizontal component of lift" then makes it turn. Without an atmosphere, the boomerang would just fly straight along a ballistic trajectory.
 
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