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Old 21st Sep 2003, 12:02
  #41 (permalink)  
 
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Can someone please explain...

I can't for the life of me work out why you would prefix a callsign with anything. I know from my strip (or when I was back in Oz my label on my screen) what aircraft type he was. Hopefully the pilot knows, or he's in real strife. I'll let the other aircraft in the sky know what he is if I need to pass traffic, so the reason for the prefix is.....

If its due to callsign confusion, i'd agree with the previous post, get full readbacks and you'll be right.

I have to admit I've wanted to prefix callsigns with certain words but not exactly aircraft type if you know what I mean.
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Old 21st Sep 2003, 16:11
  #42 (permalink)  
 
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From my experience of working at a couple of the busier GA fields in the UK, it can be quite useful including the type with the callsign. For one thing it helps the low hour student who is number 4 in the downwind leg if he knows what types are in the pattern ahead and around him.

Not much use to the radar guys though...

Tiggur
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Old 21st Sep 2003, 18:05
  #43 (permalink)  
 
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Fair enuff

Yeh I was talking from an area radar/procedural perspective, sorry didn't think of you guys in towers, working on your suntans
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Old 23rd Sep 2003, 19:55
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Angel Needed from B206B III Driver.

Be an angel if you can. I know this is asking alot, but here's what I seek.

1) Interior photos of a B206B III from pilot's perspective looking: forward, up, forward left & right, left & right, left & right rear. Can you guess why yet? Yep, for an FS2004 virtual cockpit model. I will use these as the basis for the "views" when you move the hat in FS, so you know what I mean.

2) Any tech reference material that would be interesting to a sim pilot, such as a start procedure.

3) Lastly, I need to get some sound .wav files of the start and engine running. Also curious how long it takes to spin up.

We have decided to take this thing to the next level, and rebuild the 206 from the ground up so we can put in working rigging and model failures of systems.

You will have my undying graditude, and when it's finished, I'll get anyone who helps out a copy when it's finished to fly! Although after a long day of flying the real thing, I'm pretty sure you're not as interested in flying a sim.

Hope I'm not bugging you guys too much, you have all been a big help. Funny how as a Special Forces and later intell guy I flew in them all the time, but never really appreciated the experience till now.

Thanks, Patrick
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Old 24th Sep 2003, 10:52
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I'm certain there are BIII's in California. Why not go to an airport & take your own photos, & if you're really nice, you may be able to get them to crank one up so you can tape the sound, etc. Nothing like seeing & hearing this stuff first-hand.
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Old 24th Sep 2003, 11:51
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Thumbs up You are right.

Yes. No better way to make sure I get it right. Besides, then I can ask the pilot a bunch of pesky questions!!! Haha
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Old 24th Sep 2003, 15:42
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Most pilots will be glad to answer them. Just show the appropriate shock and awe & you can get all the answers you want.
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Old 14th Oct 2003, 17:41
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Question B206B Vertical Stab AOI

Is the angle offset from the longitudinal 5.5 degrees as it is for the TH-57?

Thanks
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Old 15th Oct 2003, 00:37
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It is on the B206 L3.
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Old 15th Oct 2003, 01:59
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Funny how I have been at the controls of a Jet Ranger for more than a 1000 hours and I have no idea. I always look at the fuselage from a distance (especially during maintenance acceptance flights)
to look for unusual skin wrinkes, slipped skids or stuff and I had previously noted the stabilizer was offset but . . .
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Old 15th Oct 2003, 03:03
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You mean your IERW instructor didn't make you tell him the number of stator blades in the turbine?
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Old 15th Oct 2003, 15:38
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Next time you look at your Long Ranger, try to work out why the vertical fin is offset in one direction, but the endplates on the horizontal stabiliser are pointed in the other direction??!!
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Old 24th Oct 2003, 06:47
  #53 (permalink)  
 
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Question B206B III Rotor Info Needed

Hi again,

I know the blade has 5 degrees of twist to even out the lift with the difference between the root and tip speed. This leads to the obvious question (since I'm modeling the sucker) of what the pitch of the blade is with zero collective, ie what is the root's cord angle of attack at zero collective?

Also, how far can the collective pitch the blades?

Also, as the rotor system is underslung with 2.25 degress of pre-coning, (I guess this means each blade up from the level), how far can the rotor disk "tilt" with full cyclic?

I'm also guessing that the blades only pitch so much, so maybe a better way for me to understand it is how much can a blade pitch max, given a max collective and max cyclic deflection.

Finally, after reading alot on the net about underslund rotors, I'm understanding now (I hope) how it is setup on the 206. I'm guessing by what I have read, that on the 206, the rotor head maintains a constant cone on the blades, and just moves about the trunion to allow the 'cone' to tilt and this eliminates the need for leading and lagging as there is no change in distance of the tips to center of mass with this teeter.

Thanks for any information,

Patrick
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Old 25th Oct 2003, 00:55
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I don't have the numbers you want, but otherwise you appear to be on the right track.
I'm curious to know why you're modeling the rotor, though.
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Old 25th Oct 2003, 01:08
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Hi,

I'm modeling it as part of a flyable package for MS Flight Sim 2004, because I love the B206, and the default helicopters in Microsoft are poor, with lots of mistakes.

After creating a custom cockpit and programming real world controls and redoing the flight dynamics, I figured I might as well go the rest of the way and redo the model as well.

Model is largely done, but now I'm doing the animation for it, and I'm trying to do things that have never been done before with helicopter models in the sim.

Patrick
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Old 6th Dec 2003, 22:09
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Question Delta-3 of B206 & TH-57

Does the B206/TH-57/OH-58 have Delta-3? If so how much? In the case of zero delta-3, then 100% of cyclic gets through to the rotor, ie. if you move cyclic 5 degrees, the swash moves 5 degrees, and then the rotor disk tilts 5 degrees.

I'm also trying to determine the max cyclic movement, and max rotor disk tilt.

Appreciate any input,

Patrick
[email protected]
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Old 6th Dec 2003, 22:25
  #57 (permalink)  
 
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I'm guessing you are talking about the T/R, I have no idea how much delta it has but it's not zero.

The manual says:

rotor flapping is allowed by a delta hinge for stability during hovering turns and fwd flight.
Why would you want to know?

It reminds me of when I used to know all this weird stuff (and only this)
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Old 6th Dec 2003, 22:39
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Well, no, I'm talking about the main rotor.

I'm modeling these helo's in exisite detail (sometimes it seems down to the washer, haha), and need to know just how much to tilt the rotor disk relative to cyclic movement.
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Old 6th Dec 2003, 23:15
  #59 (permalink)  
 
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The MR does not have any of that "delta" stuff.

Modelling? Why don't you post a picture of your modelling? Would be interesting.
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Old 6th Dec 2003, 23:24
  #60 (permalink)  
 
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The main rotor of the Bell 206 has no significant delta three coupling.

See this page I just put up:

http://www.s-92heliport.com/delta.htm


The sketch came from here:

http://www.hsn-heli-nordbayern.de/bell206f.jpg

Some great Pprune discussion of delta three, and good informative Dave Jackson web pages referenced:

http://www.pprune.org/forums/showthr...ht=delta+three
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