I would like to ask a special favor....

[NickN]

Hopefully, and from the postings I have read by Phil and Tim about CORE, we may be seeing a new engine for FS11. No one has said anything yet about specifics in their blogs but from what I have read CORE is coming in v1 whichis the current CORE, v2

[NickN]

I found some data on the aircraft that may suggest the issues we were seeing in the water were because of the prop diameter... its too high @ 17ft. The originals were 15.2 and under

Also, the engine according to the manufacture is direct injected and not carb..

Going to make a few small changes and see how this works. I got reverse to work visually.. just not with physics at this point

I am checking on the engines further however it appears we are missing the tuboprop engine data too

EDIT:
Yep.. Turbo props and it also appears someone has been posting the wrong info at Wiki

http://books.google.com/books?id=WgYseR ... t#PPA85,M1


SP-5B = Pratt J60 turboprop engines

Someone who was a crewman posted here (2nd post down) that points out the error
http://aeroweb.brooklyn.cuny.edu/specs/martin/p5m-2.htm

They probably swiched to the P&W TP on the PM-2 models later made


EDIT again.. Something is wrong.. that is a turbofan, not turbo prop unless P&W made a J60 TP model. checking now

[NickN]

OK

Mystery solved

I should have just logged int the boeing system to begin with. I still have some access but not as much as I would like sometimes.. LOL

Here is the deal... the SP-5B was going to be redesigned and fitted with a turbofan jet engine.. it never made it past prototype

There were 2 companys bidding on the engine... GE and P&W. Both were placed into the design for testing

http://www.geae.com/engines/military/j85/index.html

So the person who posted that info is either getting old and did not remember correctly or they were part of the prototype testing program, one of the two

(Model 313) P5M-3 - Prototype 4 engined variant, later with
                                   

[Brett_Henderson]

I hope you don't get carried away lol..

The visual model we're working with is definately piston-powered. The numbers I put into the cfg are pretty accurate for the 3350 engine.

The goofy prop-reduction is a hangover from working with a modified DC-3 prop (I have no idea why they had it at 1.7:1.. but at 1:1 the engine won't start)..

If you have to incorporate some sort of turbine engine to get the reversers to work.. the turbine lag will be more harmful than not having reverse.

[Brett_Henderson]

And.. we're already working under the constraints of the MSFS engine, in that we're fudging turbo-charging, for what was actually super-charging. It's no biggie so long as the max/min MP numbers are accurate, as well as the critical altitude (that's hugely important)..

Edit: And.... the engines are located some 5 feet above the reference line; the float-points are some 10 feet below it. The prop would have to have a cfg diameter of 30+ feet (15' radius) for it to affect water ops. That probelm was an FS9 airfile hangover.

[NickN]

And.. we're already working under the constraints of the MSFS engine, in that we're fudging turbo-charging, for what was actually super-charging. It's no biggie so long as the max/min MP numbers are accurate, as well as the critical altitude (that's hugely important)..

Edit: And.... the engines are located some 5 feet above the reference line; the float-points are some 10 feet below it. The prop would have to have a cfg diameter of 30+ feet (15' radius) for it to affect water ops. That probelm was an FS9 airfile hangover.

I see that now

I did correct the fuel pressure issue in the air file so the panel now has no red light on fuel pressue. .. and did get reverse pitch to work visually, just wont affect the physics in the sim. RP is not available in that air file

No, I did not mess with engine other than to bump up the cid, HP (SC bottle boost) and change the prop dia to the specs I got out of the system

No worries.. I'm not messin it up LOL

I just thought I would try a few things... Jim tells me the VC light works (with lnd lights on) with the old air file but not the new one so I was looking at that too

EDIT:


Engines (a) 2 Curtiss-Wright R3350-32WA Reduction gear ratio 16:7

Engine Limits* (a) R-3350-32WA

Takeoff (5 minutes wet)

BHP

[Bob70]

Well the engines in the P5M aircraft that we had were piston type. I was a aircraft electrician, but as I remember they were Pratt and Whitney 3300 or 3350

This pic may help.



Bob

[NickN]

I saw that Bob when I was digging up info, so the person that posted P&W may have meant the original models

The google book listed a turofan jet engine and I checked that out as the prototypes for the series that were meant for mid 60's release but never made it

P5M-2 in the mid-late 50's and early 60's with the T tail are registered with the Curtiss-Wright R3350-32WA

Did you work on the T tail M-2's?

The 40's and early 50's models were definitely P&W

I bet they may have been switching engines too... It would not surprise me if the PM-2's would fit the P&W's and they may have been swaping them around.

Dont know but the history was fun to research.

[NickN]

I am waiting for textures from Anthony so i am taking advantage of the time


Fixed:


1.
Fuel pressure... increased in air file, now correct in panel


2.
Minor specs changed for engine and prop

.. made a difference in a few areas, stall was one of them.. and Brett, I read up on these things, they were designed to have a nearly "stall and drop" landing and in fact that maneuver was done all the time in them, even the larger ones

[Brett_Henderson]

The last cfg/air file I sent you, should have the contact points that work for ground ops. Just start a flight at a land airport..

If you start a flight in water, and THEN "go to" a land airport, the wheels will be stuck under-ground. That's because of the lack of scrape points. I eliminated them as a variable when tuning the float points.. beacause they don't work well with FS9 models in FSX.

[NickN]

The last cfg/air file I sent you, should have the contact points that work for ground ops. Just start a flight at a land airport..

If you start a flight in water, and THEN "go to" a land airport, the wheels will be stuck under-ground. That's because of the lack of scrape points. I eliminated them as a variable when tuning the float points.. beacause they don't work well with FS9 models in FSX.

Ahhh, OK

I was able to taxi it out of the water and it worked fine





UPDATE ON THE VC lights...

[NickN]

Hey, Jim

we do need mixture controls if possible.

I took her up to her max alt (about 22-23K) and mix would be nice to have so keyboard is not required

[NickN]

Update sent via email

Make sure to save what you have and then just let it overwrite


updated air file with fuel pressure and a few other minor changes


updated aircraft.cfg with added weight stations, updated engine data, changes in prop engineering and minor changes to flight tuning


updated sound files.. fixed 'skip' in audio track and also enhanced the low freq


Updated FX and associated sound files

[Brett_Henderson]

I just took the "final" edition on a shakedown flight.

[NickN]

Jim is going to be away for a few days so I think it may be time to let our resident PM-5 crew member test what we have.

Bob.. I will package it up and send it to you with instructions for overwrite of the original and use. Its not finished panel and paint wise but I think its time to let you loose with it and get feedback from you on what we have so far.

It will probably be later today because I need to start a "readme" for it and its installation anyway and now is a good time to start making