Mechanical gyroscopes for vehicles examples wtd
Mechanical gyroscopes for vehicles examples wtd
(OP)
I want to build a gyro from a motorcycle wheel - maybe about 30lbs including motor to maintain gyro rpm.
Does anyone have any examples of similar size/capability?
Thanks.
Does anyone have any examples of similar size/capability?
Thanks.





RE: Mechanical gyroscopes for vehicles examples wtd
What do you want to accomplish?
A gyro either is part of a sensor, or it is very large and heavy relative to what you are trying to stabilize. Ultimately, all a gyro does is increase your moment of inertia. Your system does not move as much in relation to what it would have done without the gyro. Any cables and shaft couplings you have attached to this thing will affect the behaviour.
Where is the motor going to be? I am trying to imagine your layout. This would be a good application for a frameless motor.
--
JHG
RE: Mechanical gyroscopes for vehicles examples wtd
TTFN

FAQ731-376: Eng-Tips.com Forum Policies
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers
RE: Mechanical gyroscopes for vehicles examples wtd
Posts like this are difficult when you don't describe what the objective is. Not to mention, a bit boring.
RE: Mechanical gyroscopes for vehicles examples wtd
He wrote it's for a motorcycle.
I agree with IRstuff, why not a flywheel?
Chris, CSWA
SolidWorks 14
ctopher's home
SolidWorks Legion
RE: Mechanical gyroscopes for vehicles examples wtd
He wrote that it is from a motorcycle. This could be some very crude garage engineering.
--
JHG
RE: Mechanical gyroscopes for vehicles examples wtd
RE: Mechanical gyroscopes for vehicles examples wtd
There's not going to be enough inertia to make it worthwhile, I think. Additionally, the existing bearing interfaces are not suitable for gyroscopic uses. Nor would be be sufficiently well balanced.
TTFN

FAQ731-376: Eng-Tips.com Forum Policies
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers
RE: Mechanical gyroscopes for vehicles examples wtd
Thanks drawoh
Chris, CSWA
SolidWorks 14
ctopher's home
SolidWorks Legion
RE: Mechanical gyroscopes for vehicles examples wtd
I am very concerned about the low inertia of the longitudinal/roll axis - if a gust of wind causes severe roll to happen -say 30 degrees in 0.5 seconds the pilot will not be able to react quickly enough.
Therefore -two requirements
1. Quick response to wind gust
A "large" qyro - made from a motorized motorcycle wheel where one can get a large inertia with not much weight because of the large diameter. The gyro wheel "tilt" changes could happen very quickly via hydraulic cylinders controlling the cage that provide force feedback to the main structure in say 0.5 seconds
2. Then the gyro wheel could be brought back slowly -(say 10 seconds) to the "neutral position" buy forces from the main structures aerodynamic controls.
RE: Mechanical gyroscopes for vehicles examples wtd
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Mechanical gyroscopes for vehicles examples wtd
The Apollo space program demonstrated that manual control of flying platforms is very tricky, and a fly-by-wire control system should be used. If you have FBW, then the reaction wheel is probably not necessary.
I think that you are already going to be challenged to lift the platform, and adding unnecessary weight is ill-advised
TTFN

FAQ731-376: Eng-Tips.com Forum Policies
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers
RE: Mechanical gyroscopes for vehicles examples wtd
RE: Mechanical gyroscopes for vehicles examples wtd
TTFN

FAQ731-376: Eng-Tips.com Forum Policies
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers
RE: Mechanical gyroscopes for vehicles examples wtd
So you're building a manned aerial vehicle out of scrap.
I'm simultaneously fascinated and terrified. Anybody got the EAA on speed dial?
RE: Mechanical gyroscopes for vehicles examples wtd
Does this platform have wings, or is it being lifted by fans? If this thing is being lifted by fans...
- ...your weight will be more critical than GregLocock and IRstuff are implying.
- ...why can't your fans act as gyros?
I looked into gyro stabilizing a piece of airborne equipment a few years ago. As I noted above, to work, a gyro must be a very large part of the mass of your system, and/or it must rotate very fast. The maximum safe rotation of your motorcycle wheel probably is rather slow. In my case, there were the additional issues of the forces caused by the cables and hoses connected to the equipment.Gyro stabilizers are active devices that read the position of a small gyro, and then send signals to actuators. This is the bases of the FBW system IRstuff is describing.
--
JHG
RE: Mechanical gyroscopes for vehicles examples wtd
RE: Mechanical gyroscopes for vehicles examples wtd
RE: Mechanical gyroscopes for vehicles examples wtd
RE: Mechanical gyroscopes for vehicles examples wtd
RE: Mechanical gyroscopes for vehicles examples wtd
http://moller.com/dev/
TTFN

FAQ731-376: Eng-Tips.com Forum Policies
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers
RE: Mechanical gyroscopes for vehicles examples wtd
Has the volantor actually flown? In the YouTube videos, it clearly is dangling from a cable, and swinging in the direction opposite to which the fans should be pushing it. Note how the website is written in the present tense, indicating that the Volantor is a developed, functioning product.
--
JHG
RE: Mechanical gyroscopes for vehicles examples wtd
If you read their shareholder meeting minutes: http://moller.com/dev/images/pdf/Minutes%202012-11..., which is also c. 2012, they were still looking for investment, meaning that they're still not at the point of producing product, which is consistent with their c. 2012 FAW page: http://moller.com/dev/index.php/about-us/faq The only thing they seem to be selling at all is their motor, which appears to be a derivative of a Wankel: http://www.freedom-motors.com/
TTFN

FAQ731-376: Eng-Tips.com Forum Policies
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers
RE: Mechanical gyroscopes for vehicles examples wtd
TTFN

FAQ731-376: Eng-Tips.com Forum Policies
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers
RE: Mechanical gyroscopes for vehicles examples wtd
RE: Mechanical gyroscopes for vehicles examples wtd
http://www.aviastar.org/helicopters_eng/bell_x-22....
Very loud he said it was.