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  #1  
Old 08-08-2006, 07:52 PM
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P-51 Progressive Training System

The Hangar 9 P-51 Progressive Training System (PTS) presented here was a collaborative effort. I built the models and textures, while opjose spent several days test flying a real PTS and tweaking the physics model to make this model perform just like its cousin.

There are three base planes in the system:
PTS-51-1 Trainer is in the full trainer configuration, with wing droops and air-brakes.
PTS-51-2 Intermediate has just the wing droops and adds two-position flaps (controled by the top right switch on the InterLink).
PTS-51-3 Sport is clean, without either droops or brakes.

There is also a second Intermediate varient called "Intermediate +", which replaces the three-bladed training prop with a two-bladed sport prop (the default prop for the full Sport configuration).


Enjoy,
Doug K.
Attached Images
File Type: jpg PTS P-51.jpg (25.4 KB, 355 views)
Attached Files
File Type: g3x PTS-51-1 Trainer_EA.G3X (606.8 KB, 648 views)
File Type: g3x PTS-51-2 Intermediate_EA.G3X (600.2 KB, 532 views)
File Type: g3x PTS P-51 Intermediate +_AV.G3X (33.2 KB, 486 views)
File Type: g3x PTS-51-3 Sport_EA.G3X (592.9 KB, 631 views)

Last edited by dhk79; 08-10-2006 at 12:39 AM. Reason: Updated downloads to include a spinning spinner
  #2  
Old 08-08-2006, 08:09 PM
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Airacobra Airacobra is offline
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Thanks you so much for this wonderful model. Thanks.
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  #3  
Old 08-08-2006, 10:59 PM
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Thumbs up

Way cool! It looks like the real deal.
  #4  
Old 08-09-2006, 09:01 AM
Rookie40 Rookie40 is offline
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Thumbs up Too Cool

Great job, looks like the real deal
  #5  
Old 08-09-2006, 10:13 AM
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It flies like the real deal in all of it's configurations.

The Full Trainer may seem very sluggish to some. The actual plane CANNOT even take off from grass at full throttle!

However it's extremely docile in the air, though you are tempted to fly it at FULL throttle all the time...

The Intermediate configuration is practically stall proof, but a bit livelier, especially with the 11x6x2 APC prop.

The Full Sport model, removes all of the "traiing gear" and converts the PTS into it's intended sport mode.

Hangar 9 did a nice job with this plane.

It goes from trainer to an intermediate sport machine w/o any major purchases or replacements... a fact often lost upon people when recommending starter planes.

BTW: If you want to improve the "reality" of this plane...

Edit any existing airport.

Find the Friction or Rolling resistance co-efficient, that is normally set to .20 by default.

Change it to .60 instead, and save the airport under a different name.

Now take off and landings will more closely reflect the real thing.... and you CAN nose over if you do not give it a touch of up elevator on runup.

Last edited by opjose; 08-09-2006 at 02:06 PM.
  #6  
Old 08-09-2006, 01:58 PM
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efinkg efinkg is offline
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This design is incredible, I really think that someone could learn to fly on it, but once you go to sport configuration, it is a lot of fun. If they made an electric version, or one w/o the motor, i might consider getting one, but unfortunately I cant fly nitro planes anywhere nearby me. Great job on the Visual and Physics models, and thanks so much.
  #7  
Old 08-09-2006, 02:05 PM
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Yes there is an ARF version w/o any motor or electronics.

There are several threads on converting it to electric at RCU.

It's a rather large bird for electric conversion, but still small enough that it can be done.

I originally picked up a RTF version but also recently purchased an ARF one as well.

I'm tempted to try adding retracts to the ARF version as this is the only thing it lacks IMHO.
  #8  
Old 08-09-2006, 04:46 PM
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how come the spinner doesnt spin?
  #9  
Old 08-09-2006, 05:56 PM
kudos kudos is offline
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realy nice work, well done guys many thanks for this grate model

much apresheated
  #10  
Old 08-09-2006, 07:44 PM
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Quote:
Originally Posted by opjose
It flies like the real deal in all of it's configurations.

The Full Trainer may seem very sluggish to some. The actual plane CANNOT even take off from grass at full throttle!
You sure about this? I've seen one do it. What kinda grass we talkin here.
  #11  
Old 08-09-2006, 08:11 PM
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Yeah I'm VERY sure.

On very short cut grass or packed dirt it takes off at full throttle. e.g. LESS than one inch tall.

On the same grass, that has not been cut for a week it will NOT begin to move with the standard 3 blade prop. It will not nose over either... it just sits there at full throttle.


With the 2 blade it begins to roll out at 50-60% throttle and does quite fine all around.


I've measured all of this at the field.

Maybe you saw one with a replaced 3 bladed prop.

The default PTS prop performs more like a 10x2.8 prop... barely any velocity...

If you look at the pictures of the PTS prop you'll see that it almost ubliquely contacts the airflow... like a pancake. It is a unique prop.

The inner parts of the prop have NO wing surface, they are merely round.

The intent was to make this bird fly SLOW and decelerate very quickly for the newbie... and boy does it.

Turn up the friction co-efficient and you get behaviour identical to mine and several others I've flown and helped with at our fields.
  #12  
Old 08-09-2006, 08:12 PM
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Well that first file downloads as the usual "attachment.php" for me...

If this happens to you, merely rename the downloaded file.
  #13  
Old 08-10-2006, 12:41 AM
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Red face Spinning Spinner

Quote:
how come the spinner doesnt spin?
Because I forgot to reailign the spinner's pivot point and never noticed that it wasn't spinning.

The download files have been updated to include a spinning spinner - Good eye!
  #14  
Old 08-10-2006, 01:04 AM
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Quote:
Originally Posted by opjose
Yeah I'm VERY sure.

On very short cut grass or packed dirt it takes off at full throttle. e.g. LESS than one inch tall.

....ubliquely...
Yea the grass at the field is very short. Like a golf course green practically. Not really that smooth but kinda like it. It did have the 3 blade prop too. It was the first time the P-51 had ever been outta the box and the guy just decided to come one day after owning it for 7 months to fly it. Never modified anything.

ubliquely - I have never heard this word before. Is it a typo? Have I been living in a cave for my lifetime? I can't even pronounce it.

From context I got that it rarely touches air.
  #15  
Old 08-10-2006, 03:32 AM
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Quote:
Originally Posted by Zelatio
Yea the grass at the field is very short. Like a golf course green practically. Not really that smooth but kinda like it.
Yes from a golf green type or hard packed dirt, it would take off well.


Quote:
Originally Posted by Zelatio
ubliquely - I have never heard this word before. Is it a typo? Have I been living in a cave for my lifetime? I can't even pronounce it.

From context I got that it rarely touches air.
oblique
adj

1. Sloping; not vertical or horizontal.

Thesaurus: slanting, sloped, tilted, inclined, transverse, angled.
2a. geom.
Said of lines and planes, etc: not at a right angle;
2b. geom.
Said of an angle: less than 180 degrees but more than 90 degrees, ie more than a right angle.
3. Not straight or direct; roundabout; underhand.

Thesaurus: indirect, subtle, vague, evasive, indirect, circuitous, circumlocutory, roundabout; Antonym: straight.
4. grammar.
Denoting any case other than the nominative or vocative.
5. bot.
Said of a leaf: with unequal sides.
noun

1. An oblique line; a solidus (/).
2. Anything that is oblique.

verb

intr
obliqued, obliquing
1. To advance obliquely, especially (military) to face half right or left and then advance.

Derivative: obliquely
adverb

Derivative: obliqueness
noun

Etymology: 15c: French, from Latin obliquus.


---

In this context, "Not straight or direct; roundabout;tilted, inclined, transverse, angled"


I've always liked philology as a sort of interest, but never to study it in depth.
 

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