AVSIG: Helicopter with robotic legs wwswsigarch.jpg (7236 bytes)

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AVSIG Discussion Sections >> Robinson

Bill Bridges - 9S1
Top Gun


Reged: 05/17/04
Posts: 6008
Loc: 9S1
Re: Helicopter with robotic legs
      09/20/15 11:41 PM

Quote:


No, swashplate geometry. Moving the cyclic stick tilts the swashplate, and that varies blade pitch in the correct sequence to make the rotor disk parallel to the plate.

Say the fuselage makes an uncommanded pitch-down movement. The swashplate tilts along with it, tilting the rotor disk forward and producing a forward force component at the top of the mast -- which pitches the fuselage further forward.






Ralph,

This may be semantics, but the swash plate doesn't move the rotor disk, it changes the pitch in the rotor blades based on input received through the intermixing bell crank from the cyclic/collective. This change in pitch tilts the rotor disk.

I don't see the point in the legs. They would just add weight. I've landed on slopes numerous times where the tips of the main rotor blades were no more than three feet off the ground. Landing on slopes and pinnacles are non-issues for military pilots, it's what we do. :-))

Ralph looking forward to continuing our conversation about the swash plate. :-))

I never thought much about the rotor disk being on the bottom other than when doing a split-S in a Cobra. Seemed like it worked just like it did when it was on top. :-)))

the other bill

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Entire topic
Subject Posted by Posted on
* Helicopter with robotic legs sreyoB yrraL 09/20/15 12:29 PM
. * * Re: Helicopter with robotic legs Ralph Jones   09/20/15 06:48 PM
. * * Re: Helicopter with robotic legs Dave Siciliano (ADS)   09/20/15 08:39 PM
. * * Re: Helicopter with robotic legs Ralph Jones   09/20/15 09:00 PM
. * * Re: Helicopter with robotic legs Bill Bridges - 9S1   09/20/15 11:41 PM
. * * Re: Helicopter with robotic legs Ralph Jones   09/21/15 08:37 AM
. * * Re: Helicopter with robotic legs Dave Siciliano (ADS)   09/20/15 12:36 PM

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