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Search: Posts Made By: SunofAtom
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Forum: Rotorheads
16th Aug 2022, 18:46
Replies: 79
Views: 7,191
Posted By SunofAtom

I thought the vibration was due to the uneven...

I thought the vibration was due to the uneven forces across the disc, when inflow roll was at its worst. That period in slow acceleration when only part of the disc has moved out the induced flow....
Forum: Rotorheads
16th Aug 2022, 18:37
Forum: Rotorheads
15th Aug 2022, 21:53
Replies: 79
Views: 7,191
Posted By SunofAtom

It certainly could, but I would expect inflow...

It certainly could, but I would expect inflow roll to have at least as big of change, since the front of the rotor system is first and the rear is last to realize the airflow changes. However, the...
Forum: Rotorheads
14th Aug 2022, 16:24
Replies: 79
Views: 7,191
Posted By SunofAtom

Thank you for the recommendation, I just managed...

Thank you for the recommendation, I just managed to grab a decent '64 version off Amazon.
Forum: Rotorheads
14th Aug 2022, 16:20
Replies: 79
Views: 7,191
Posted By SunofAtom

Very interesting discussion, and I appreciate...

Very interesting discussion, and I appreciate everyone's input (and patience!) as I attempt to make sense of all of this. It's surprising how little of this information is in the current helicopter...
Forum: Rotorheads
13th Aug 2022, 00:22
Replies: 3
Views: 715
Posted By SunofAtom

Dissymmetry of lift is resolved through teetering...

Dissymmetry of lift is resolved through teetering of the rotor system. IIRC, trim is simply to hold some of the cyclic pressure while in straight and level flight, since without hydraulics, it took...
Forum: Rotorheads
12th Aug 2022, 14:58
Replies: 79
Views: 7,191
Posted By SunofAtom

This looks like a great read, thank you for the...

This looks like a great read, thank you for the link!

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Very cool backstory as well!

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Forum: Rotorheads
12th Aug 2022, 14:49
Replies: 79
Views: 7,191
Posted By SunofAtom

Hey, I can post again! Apparently I'm limited to...

Hey, I can post again! Apparently I'm limited to 5 posts per day, so I'll try to group responses until I'm out of probation.



My understanding was that it was gyroscopic precession when an...
Forum: Rotorheads
10th Aug 2022, 23:48
Replies: 79
Views: 7,191
Posted By SunofAtom

Excellent info, Iíll have to play around with the...

Excellent info, Iíll have to play around with the lift equation.



So phase lag, not gyroscopic precession? (Another difference Iím trying to better understand.)
Forum: Rotorheads
10th Aug 2022, 23:29
Replies: 79
Views: 7,191
Posted By SunofAtom

Interesting, so it does seem to be related to the...

Interesting, so it does seem to be related to the start of dissymmetry of lift. Itís surprising that it causes such a big change, but I guess it makes sense. We are moving out of a near vertical...
Forum: Rotorheads
10th Aug 2022, 23:11
Replies: 79
Views: 7,191
Posted By SunofAtom

Awesome, thanks! I just ordered volume 3 of his...

Awesome, thanks! I just ordered volume 3 of his articles.
Forum: Rotorheads
10th Aug 2022, 23:10
Replies: 79
Views: 7,191
Posted By SunofAtom

Yes, as a commercial pilot, I have definitely...

Yes, as a commercial pilot, I have definitely learned to push through without any thought. As a new-ish CFI, I see students wrangling the helicopter throughout the takeoff, and I wanted to really...
Forum: Rotorheads
10th Aug 2022, 16:44
Replies: 79
Views: 7,191
Posted By SunofAtom

What causes "blowback/flapback" when accelerating through transverse flow effect?

I'm trying to get my head around some of the aerodynamics, and I have yet to find a good explanation of blowback.

I understand the slight right roll (CCW main rotor) when entering transverse flow...
Showing results 1 to 13 of 13


 
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