NZFF

Sorry about the rough edit....but do you (anybody) know if this was, or is a consideration for the trainer?

Plat porter front end,lol i see

Works for me .. I did see a proposal along these lines , guess the CT4E was the end product .

Nice edit ... it has been done in RL

There go's the proposal Thanks Paul , i guess operation cost using the turbine or the expense , im not sure .

Naki....thanks for that, The real thing looks great. Was it just a one off ?
Creator, not a porter mate, its the very front end of one of those XL750 (is that right, cant remember at the moment) it was ZK-XLG
Cheers guys

I think it was called the CT-4C, never went into production. I think that with the 300hp engine it has now it has pretty good performance specs for an aircraft of it's size.

redkiwi wrote:

QUOTE (redkiwi @ Feb 27 2010, 12:56 PM) <{POST_SNAPBACK}>

I think it was called the CT-4C, never went into production. I think that with the 300hp engine it has now it has pretty good performance specs for an aircraft of it's size.

Thanks RedKiwi, i guess they get to a point where they just cant use all the power they could hang on the front. Your right, 300hp and that nice airframe....good match.

Although given the way the air force treat their engines they could probably benefit from a relatively hardy PT-6 to cope with the hamfisted power changes that piston cylinders love so much.

The actual turboprop Airtrainer had a LTP-101 in it of about 400shp ...I wonder if they would of had more success if they put in a PT-6 instead like splitpins example.

OK just to set the record straight - The CT/4C was built as a proposal for a USAF contract for a trainer. It was powered by an Allison 250 engine (basically the same engine fitted to Jetrangers and H500's). I'm not sure how many HP, but certainly it was de-rated and I'm not sure it was as high as 400HP. The aircraft was actually NZ1940 borrowed from the RNZAF. After an unsuccessful bid - It was later retrofitted and handed back to the RNZAF as a CT/4B again in 1992. There was also a retractable gear version of the "C" model on the drawing board, but this never eventuated.

deaneb wrote:

QUOTE (deaneb @ Feb 28 2010, 05:42 PM) <{POST_SNAPBACK}>

OK just to set the record straight - The CT/4C was built as a proposal for a USAF contract for a trainer. It was powered by an Allison 250 engine (basically the same engine fitted to Jetrangers and H500's). I'm not sure how many HP, but certainly it was de-rated and I'm not sure it was as high as 400HP. The aircraft was actually NZ1940 borrowed from the RNZAF. After an unsuccessful bid - It was later retrofitted and handed back to the RNZAF as a CT/4B again in 1992. There was also a retractable gear version of the "C" model on the drawing board, but this never eventuated.

Thank you master.

Grasshopper

Splitpin wrote:

QUOTE (Splitpin @ Feb 28 2010, 05:52 PM) <{POST_SNAPBACK}>

Thank you master.

Grasshopper

No master here, just trying to cobble together what I could remember. I'm sure if you google it there will be more pics and details of the CT/4C. Further to that, I am picking the extra cost of a turbine over a piston engine is why the E model won out in the end. Additionally as a trainer, piston engines are far better suited to starting and stopping regularly, where as a turbines are better suited to running for longer periods. As for the RNZAF being hamfisted - be rest-assured you could "nuke" a PT-6 just as quick as a piston engine and the it will cost you a lot more $$$. I'm not sure at the time (or even now) that there are PT6's available at the lower HP levels the CT4 would need? I think the smallest is about 500 HP.

Thanks , for that.....i just wondered why the airforce never went the turbine way for ab intio training (when they had jets) Interesting that the turbine CT-4 was done for the USAF. When i started it was only Harvards, and from there to multi (Devons)but no streaming on to jets,unless that was what you opted for.....otherwise , transport ,maritime, or rotory.
Of course then , transport was Freighters, Daks, and C-130 , Andovers were still a rumour.
Interesting stuff indeed.
I have a couple of "stumpy" Fletchers for you , i might post later....seems im reduced to this at the moment (editing)

Again, thanks for the heads up on the Ct-4 history.


Cheers

Whoops got my turboprops wrong .........yes it was an Alison 250 not a LTP-101...there is a version of the Aermacchi SF-260 (which is about the same size as an Airtrainer) with an Alison (now Rolls Royce) turboprop.