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Search: Posts Made By: autojohn
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Forum: Rotorheads
25th Jan 2019, 15:58
Replies: 31
Views: 7,685
Posted By autojohn

Thanks wrench, I'll do more research on that....

Thanks wrench, I'll do more research on that. Happy to have made it this far ;-) Tell me more about your governor mishap. Did I understand correctly that it was an overspeeding governor? Any other...
Forum: Rotorheads
25th Jan 2019, 04:49
Replies: 31
Views: 7,685
Posted By autojohn

Thanks wrench, I appreciate the info. I think I...

Thanks wrench, I appreciate the info. I think I already have the Bendix manual. Sadly, because I'm new to the forum, I can't post urls or images, but the document I have has a cover page with teal...
Forum: Rotorheads
25th Jan 2019, 04:28
Replies: 31
Views: 7,685
Posted By autojohn

Hallelujah! I think I'm finally getting it! I've...

Hallelujah! I think I'm finally getting it! I've been thinking about his Pg signal incorrectly (like a binary control signal)

I think you're saying that the Pg/Pr differential biases the FCU...
Forum: Rotorheads
24th Jan 2019, 20:33
Replies: 31
Views: 7,685
Posted By autojohn

I'm using the term "static droop" in the sense...

I'm using the term "static droop" in the sense used in "Helicopter Test and Evaluation" (Cooke & Fitzpatrick) They define it as ( NR_min_power - NR_max_power / NR_min_power ) x 100%. Typical values...
Forum: Rotorheads
24th Jan 2019, 00:03
Replies: 31
Views: 7,685
Posted By autojohn

thank you. I’m still not understanding how static...

thank you. I’m still not understanding how static droop is implemented in the B206. Looking at the internals of the governor, it’s just a flyweight assembly and a thrust bearing which opens the Pg...
Forum: Rotorheads
23rd Jan 2019, 15:32
Replies: 31
Views: 7,685
Posted By autojohn

hi RVDT, having now seen the internals of the...

hi RVDT, having now seen the internals of the governor, I'm even more puzzled about the implementation of static droop. The manual shows a simple flyweight assembly with a speeder spring & arm that...
Forum: Flight Testing
22nd Jan 2019, 19:14
Replies: 15
Views: 22,065
Posted By autojohn

Hi barit1, I'm still struggling with this...

Hi barit1, I'm still struggling with this concept. When you say it's "relatively easy to implement"; How is this done? Looking at the internals of the B206 governor, I simply don't understand why it...
Forum: Rotorheads
21st Jan 2019, 01:21
Replies: 31
Views: 7,685
Posted By autojohn

That's super useful to see. Much simpler than I...

That's super useful to see. Much simpler than I expected. Is that actually the speeder spring hanging in the housing?

WHere is the arm that vents Py on overspeed?

Thanks! JOhn
Forum: Rotorheads
20th Jan 2019, 18:49
Replies: 31
Views: 7,685
Posted By autojohn

Wow, so much good info, thanks all! @RVDT -...

Wow, so much good info, thanks all!

@RVDT - "Flyweight governors have inherent droop - this gives stability to stop it hunting incidentally. "
This was the fundamental point I was missing. I had...
Forum: Rotorheads
20th Jan 2019, 00:40
Replies: 31
Views: 7,685
Posted By autojohn

Bendix FCU/GOV fundamental question

OK, I'm a retired dude having fun learning to fly the jetranger. But I'm clearly not understanding how the governor works, or I'm missing something basic. Help appreciated!

My assumptions are...
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