Home : Gallery : History : Uses : Behaviour : Maths : Forum : Propulsion : Links : Glossary
Main Forum Page

The Gyroscope Forum

15 April 2021 14:58

Welcome to the gyroscope forum. If you have a question about gyroscopes in general, want to know how they work, or what they can be used for then you can leave your question here for others to answer. You may also be able to help others by answering some of the questions on the site.

Search the forum:  


Asked by: rich engle
Subject: minimum speed to precess force
Question: Does anyone know what the minimum speed of a gyro to make it so a force at 0deg will yield a movement at 90deg... or even better, what the angle is wrt speed... see http://www.copters.com/aero/gyro.html for pictures.

Date: 27 December 2020
report abuse

Answers (Ordered by Date)

Answer: Glenn Hawkins - 01/01/2021 00:03:51
 For a gyro to precess around a pivot at the top of the pedestal, it only needs enough tiny force from a super slow rotation to overcome that lightest friction. If for instance, rotation is slow enough, the wheel will precess very fast, fast enough that it creates a centrifuge and slings itself off the pedestal. The slower it rotates the faster it precesses and the stronger the precession though short lived. It is because there is so little friction at the pivot.

Your answer: As little as one rotation per minute would have an effect but so little an effect that the distance traveled you could not determine, certainly you could not see it or measure it. The wheel would appear to drop straight down, decrepitly not revealing the undetectable amount of precession.

Report Abuse
Add an Answer >>
Website. Copyright © 2021 Glenn Turner. All rights reserved. site info
Do not copy without prior permission. Click here for gyroscope products