Air Macau 727 top engine question, help needed!!! - DA.C
 

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Old 10-26-2012, 11:10 PM   #1 (permalink)
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Default Air Macau 727 top engine question, help needed!!!

Hi
Do any of you know if the Phoenix 1:200 Air Macau B727-200 has a fan blade on the #2 or top engine.

Sorry that I don't have pics, my computer is gone and I'm relying on my iPad.
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Old 10-27-2012, 12:43 AM   #2 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

It would not have the fan if it was accurate. The #2 duct is shaped like an 'S' and the engine fan is at the bottom of the duct.

You can't see the engine fan by looking in the duct on the model or the 1:1.
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Old 10-27-2012, 12:46 AM   #3 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

I don't know if it does or not, but if it does - it's wrong. Like the L1011, the 727 has an "S" duct between the inlet and the engine. The engine itself is mounted in the fuselage, inline with the tailpipe.

edit: Charlie was faster.
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Old 10-27-2012, 01:22 AM   #4 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

You can detect the S shape in this diagram...

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Old 10-27-2012, 05:42 AM   #5 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

A 727 with twin axle main gear?! WTF
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Old 10-27-2012, 08:36 AM   #6 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

Thank you guys so much for your help! I recieved the model and it didn't have the fan blade and I wanted to know if it was accurate or not. @Flydenied, I love that diagram.
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Old 10-27-2012, 10:44 AM   #7 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

Quote:
Originally Posted by EMD F7A View Post
A 727 with twin axle main gear?! WTF
That's the first thing I noticed too! That must be some sort of preproduction diagram, because even the back of the wingtips have some weird rearward rake on the aft edge which the real aircraft does not. Interesting.

Last edited by JTS97Z28; 10-27-2012 at 10:46 AM.
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Old 10-27-2012, 12:52 PM   #8 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

Quote:
Originally Posted by EMD F7A View Post
A 727 with twin axle main gear?! WTF
Quite strange.

I have no information about this B 727, if I remember well, between the two main landing gears, there was the APU, so space available was very limited.

Note that an A 320 with four wheel main bogie did exist.
The only customer was Indian Airlines.

Jean Pierre.
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Old 10-27-2012, 01:00 PM   #9 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

Quote:
Originally Posted by AIR FRANCE 340 View Post
Quite strange.

I have no information about this B 727, if I remember well, between the two main landing gears, there was the APU, so space available was very limited.

Note that an A 320 with four wheel main bogie did exist.
The only customer was Indian Airlines.

Jean Pierre.
wow thanks for the info on the a320. why does it have twin axles MLGs?
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Old 10-27-2012, 01:15 PM   #10 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

Well i'll be darn, first time I have ever seen this.


Last edited by JTS97Z28; 10-27-2012 at 01:17 PM.
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Old 10-27-2012, 01:17 PM   #11 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

Maybe for use on semi prepared airfield or low resistance runway.
The best way to spread the load on a bigger surface.

Pictures of these planes should be available on the net.

Jean Pierre.
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Old 10-27-2012, 01:30 PM   #12 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

Quote:
Originally Posted by JTS97Z28 View Post
Well i'll be darn, first time I have ever seen this.

Nice picture, difficult to beleive but it's true.

Jean Pierre
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Old 10-27-2012, 02:20 PM   #13 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

Sorry but the Phoenix 1:200 Air Macau mould 727 is -100 and not -200 as it should be.
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Old 10-27-2012, 03:42 PM   #14 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

I know, I got it cheaply though.
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Old 10-27-2012, 07:38 PM   #15 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

A similar 'load spreading' solution was used by Tupolev on the Tu154. I think that until the arrival of the 777, the Tu154 was the only civilian airliner to use a 6 wheel bogie assembly. This gave it the ability to use airfields that other aircraft in its class, could not.
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Old 10-28-2012, 07:12 AM   #16 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

It was a proposed 727-300 - see file name of the pic.

Boeing 727-300B Cutaway Drawing , Civil Aviation 1949-Present Cutaways - Cutaways c/o Flightglobal Image Store

More infos here:

Any Info About The Never-Built 727-300? — Civil Aviation Forum | Airliners.net
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Old 10-28-2012, 07:27 AM   #17 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

Thank you for these very interesting information, thanks to you, today, I have learnt something.
I've never heard of this project.

Jean Pierre
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Old 10-28-2012, 08:21 AM   #18 (permalink)
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Default Re: Air Macau 727 top engine question, help needed!!!

A few more words about the B 727-300.

Collecting models is a good thing but knowing what is behind the real aircraft is quite interesting too.

I understand that CFM 56 and PW JT 8 were in competition to power the proposed B 727-300.
The PW engine couldn't compete in terms of fuel burn.
Just one example.

The B 727-200 burnt three tons of fuel between Paris and Amsterdam.
The A 320 carrying the same number of passengers burns only two tons.

Structural modifications to accomodate CFM 56 or V 2500 would have been very significant and uneconomical.

So, it is not surprising that this project was cancelled.
It would have been a very capable aircraft but new technology was round the corner.

The B 757 came ...

Jean Pierre.
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