How Does the Tail Rotor on a Helicopter Counteract Torque?

  • Thread starter Thread starter aspagnito
  • Start date Start date
  • Tags Tags
    Explain
Click For Summary

Discussion Overview

The discussion revolves around the mechanics of helicopter tail rotors and their role in counteracting torque generated by the main rotor. Participants explore concepts related to gyroscopic effects, the implications of an infinitely long tail rotor, and the theoretical physics involved in these scenarios.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant describes an experiment with a computer ventilator engine, noting unexpected behavior when the engine was not rotating, suggesting a need for explanation regarding gyroscopic effects.
  • Some participants propose that the observed behavior relates to the principles of a windmill or gyroscope, indicating differing interpretations of the phenomenon.
  • Another participant raises a hypothetical scenario about the implications of an infinitely long tail rotor, questioning the physics involved and the mathematics that would apply in such a case.
  • A later reply clarifies that the tail rotor counteracts the torque from the main rotor and suggests that a longer tail boom would theoretically require less force from the tail rotor to achieve equivalent counter-torque, while also noting practical issues that arise with such a design.

Areas of Agreement / Disagreement

Participants express differing views on the initial experiment and its implications, as well as on the theoretical scenario of an infinitely long tail rotor. There is no consensus on the interpretations or implications of these concepts.

Contextual Notes

The discussion includes assumptions about the behavior of rotating systems and the effects of torque, but lacks detailed mathematical treatment or resolution of the practical challenges associated with long tail booms.

Who May Find This Useful

Individuals interested in helicopter mechanics, gyroscopic effects, and theoretical physics related to rotational dynamics may find this discussion relevant.

aspagnito
Messages
5
Reaction score
0
I took an engine from computer's ventilator and I have moved it along the axis of possible rotation (it was not rotating). Nothing happened. I was moving it along the straight line. When the engine was working and rotating, something weird happened, 'cause the engine did everything not to move along the axis (it turned its possition, its axis was almost prependicular to the direction of the movement).
Please explain me this.
 
Physics news on Phys.org
If the fan was still on, I think you discovered the windmill.
 
Yes, may be rss_watters is right. I did not understood well the description.
 
You all know the idea of helicopters. What happens if the tail of the helicopter is endlessly long? That's the idea I would like You to explain me. What physics rule in this case? Will the back propeller have any resistance to move? Give me please some mathematics.
 
Sorry. I know english is a second language here, but your question isn't making much sense. The tail rotor on a helicopter is used to counteract the torque created by the main rotor. If the tail boom were very long, that would, theoretically require very little force from the tail rotor to produce an equivilent counter tourque. Of course there are NUMEROUS other problems involved with having a very long tail boom, but that is in the realm of reality, not theory.
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 32 ·
2
Replies
32
Views
13K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 4 ·
Replies
4
Views
4K
  • · Replies 18 ·
Replies
18
Views
4K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 13 ·
Replies
13
Views
4K