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Forum: Rotorheads

22nd May 2023, 07:21

Replies: 133

Edson AB crash, VRS?

Views: 17,283

Posted By fdr

You are very welcome. :ok: If something is...

You are very welcome. :ok:

If something is being added that has a potential to impact the operation of some young driver, it should be supportable if represented as fact, otherwise it adds to the...

Forum: Rotorheads

22nd May 2023, 07:01

Replies: 133

Edson AB crash, VRS?

Views: 17,283

Posted By fdr

Nick is alive and well, and occasionally to be...

Nick is alive and well, and occasionally to be found in the old country, Shawn finally hung up his helmet on 19 June 2021 after a really bad run of health issues, if it was fitted, it went U/S at...

Forum: Rotorheads

22nd May 2023, 04:10

Replies: 133

Edson AB crash, VRS?

Views: 17,283

Posted By fdr

? I know it is some time since many of us...

?

I know it is some time since many of us looked at the books, but.... the tip path plane is only partly directed by the cyclic, it is otherwise determined by the flapping resulting from...

Forum: Rotorheads

22nd May 2023, 03:09

Replies: 133

Edson AB crash, VRS?

Views: 17,283

Posted By fdr

Hmmm. We may be speaking different dialects...

Hmmm.

We may be speaking different dialects of English, but here is the equation of motion of flapping in forward flight, [eq:6.130 of reference]
...

Forum: Rotorheads

22nd May 2023, 02:16

Replies: 133

Edson AB crash, VRS?

Views: 17,283

Posted By fdr

Interesting. quick thorts: For evaluating...

Interesting. quick thorts:

For evaluating VRS, please note that vortex structures and their development are essentially independent of Reynolds Number, which is not obvious, but happens to be the...

Forum: Rotorheads

9th May 2023, 16:02

Replies: 133

Edson AB crash, VRS?

Views: 17,283

Posted By fdr

Not quite... I understand the sentiment, but a...

Not quite... I understand the sentiment, but a flare with any forward IAS will reduce inflow through the rotor disk. If there is no airspeed, then the consequence is not altering the inflow to the...

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