×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

*
*
*
*

Thanks. We have received your request and will respond promptly.

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

SWASH PLATE

thread6-49030

SWASH PLATE

SWASH PLATE

(OP)
I have always been fascinated with the swash plate used to control the rotor on a helicopter and have even built several in my machine shop. But I continue to be a bit mystified by just how it is they operate with the various actions they perform without those actions interfering with one another. I am trying to obtain a clearer picture of how a teetering rotor works with both cyclic and collective action on the swash plate and rotor. I have been to many sites on the Internet but have never come across a full explanation with diagrams as to how the whole process works. Can anyone out there give me a hand?

RE: SWASH PLATE

I'm definately not the expert here (fixed wing boy due to financial constraints ). My understanding is that the collective lifts the entire assy, so that the angle of attack (AOA) increases on all blades equally. The cyclic movement is mirrored in the swash plate, so that AOA is increased toward the rear for forward flight and to the left/right for banking.

The only complication is the gyro-comp system, which on a HUEY (say) acts above the swash plate. Basically the rotating masses are lever reduced so that the blade angle actually follows the plane of the mass "flywheel". This means that the blade aerodynamic forces correct for the gyroscopic coriollis forces, i.e. as aircraft banks left front AOA increses while rear AOA decreses. The swash plate is one lever input, while the gyro-comp is the other. This keeps the blades ~even, usefull to avoid cutting off one's own tail!

Mart

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login

Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now
Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close