Ten engines ¯ the SARO Princess - DA.C
 

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Old 12-05-2016, 02:23 AM   #1 (permalink)
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Default Ten engines … the SARO Princess

This time, it is a flying boat.

In 1946, the British Ministry of Supply asked Saunders Roe to build a flying boat able to accommodate 100 passengers on two decks in the comfort and the luxury of a transatlantic liner, it was intended for non-stop transatlantic service by BOAC.

It was really a big aircraft, a wingspan of 66,9 m, a length of 42 m, max take off weight 156,5 t.
Its expected range was 5200 nm with a full load and it was powered by ten (10 !) gas turbines.

Everything was huge in this aircraft, including the flight engineers panel, two F/E were required to operate the aircraft.
On a B 747-100, the F/E panel was something impressive with an electrically powered seat sliding forward and backward to reach every control, switch, circuit breaker or the throttles, but on the Princess it was twice as long, requiring two full-time F/E.
Powered by ten Bristol Proteus gas turbines, each of them was supposed to produce 3500 shp, if fact, they were limited to 2500 shp, the engines were in the development phase.

Three aircraft were ordered and built.
the first prototype was the only to fly, it made 47 flights and accumulated a flying time of 97 h 50 mn.

All the contra prop gearbox temperatures were "in the red" during the first flight.
Proteus engines lacking power.
Problems with the engines and the propeller gearboxes.
A few engine shutdowns.
It was reported severe engine problems with salt water getting into the inner engines during take off and landing.
BOAC withdrew support when the airline ceased flying boat operations in 1950.

All these problems led to the decision to end development.

The aircraft reached 30 000 feet during flight 40, which in 1953, was quite remarkable.
By comparison the cruising altitude of the Constellation in those days was 18 000 feet.

The G-ALUN made its last flight on the 27th of May 1954.

This is a resin model made by Cloudbreak Models.
Propellers, engine exhausts and beaching gear are white metal.
The model is very nice and very accurate, it captures the shape of the real aircraft very well, congratulations to the pattern maker.
Assembling the different parts doesn't pose any problem.

Pitot tubes and VHF antenna were added.
Just for fun (?), propellers were sanded and polished with a cotton swab in a Dremel rotary tool and the deicers were painted on the forty blades.
The decals offer a option for the "airline livery", I preferred the Prototype livery.
You can also display the model on a very nice beaching gear and if you wish, you have in the box a separate pair of outer wings with floats down.

Available from Helmet 200 in kit form for £ 78, can be bought all finished.
Too good to be missed.

Jean Pierre.
Attached Thumbnails
-saro-1.jpg   -saro-2.jpg   -saro-3.jpg   -saro-4.jpg   -saro-5.jpg  

-saro-6.jpg   -saro-7.jpg   -saro-8.jpg   -num-riser-100.jpg   -num-riser-101.jpg  

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Old 12-05-2016, 06:27 AM   #2 (permalink)
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Default Re: Ten engines … the SARO Princess

Lovely job, JP. Thanks for the pics and history.

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Old 12-05-2016, 12:29 PM   #3 (permalink)
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Default Re: Ten engines … the SARO Princess

G'day,

It's definitely a beautiful looking model. I have the same, tho in 1:500 scale which was offered a few years back as both a completed model and as a white metal kit by French firm Esprit43 (probably better known for its 1950s racing cars in 1:43 scale)

Here is a link to the 1:500 scale model in the database:

Wings900 Model Database - Advanced Search

Some more facts on the original plane, it was leased to the American Government (Navy) for the price of five hundred-thousand pounds who proposed to use it as a basis for America's first atomic powered airplane. The Navy decision to cancel the project came before the plane was transferred, tho the British kept the money already paid.

In 1964, all 3 planes were purchased by Aero Spacelines, who planned to use them as heavy-duty freight aircraft for transporting Saturn V rocket components for NASA. When preparing to be moved, it was found that they were badly corroded (the contract for maintenance and inspection of the stored aircraft had been allowed to lapse, which resulted in the airframes deteriorating rapidly). Sadly all three Princesses were broken up by 1967.
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Last edited by make.me.laugh; 12-05-2016 at 12:34 PM.
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Old 12-05-2016, 04:09 PM   #4 (permalink)
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Default Re: Ten engines … the SARO Princess

Thats a very neat model! I do like the full aluminum fuselage and all the tiny details; it makes the aircraft comes 'alive'. I also do like the fact that you keep presenting us aircraft that you would easily forget, but which are actually very worthwhile. Mes compliments!
Eight engines, ten engines... What will be next JP; Dornier Do X with 12 engines ;-) ?

cheers VJ

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Old 12-06-2016, 06:41 AM   #5 (permalink)
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Default Re: Ten engines … the SARO Princess

Thank you for your kind comments.

If everything goes well, next model will have four engines : 4 x PW R2800-B31.

Jean Pierre.

PS : I also plan something with three PW JT8D

Last edited by AIR FRANCE 340; 12-06-2016 at 06:49 AM. Reason: PS added
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Old 12-06-2016, 08:43 AM   #6 (permalink)
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Quote:
Originally Posted by AIR FRANCE 340 View Post
If everything goes well, next model will have four engines : 4 x PW R2800-B31.
Wow, that might be the Breguet 761S? One of the three pre-production aircraft of the Deux-Ponts? (Since the production variants were equipped with CA18 and CB17 engines). Qui est magnifique
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Old 12-06-2016, 12:02 PM   #7 (permalink)
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Default Re: Ten engines … the SARO Princess

You are absolutely right !

If the model is good enough, pictures when finished …

Jean Pierre.
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Old 12-24-2016, 09:16 AM   #8 (permalink)
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Thumbs up Re: Ten engines … the SARO Princess

That certainly is a wonderful model of an iconic aircraft not too often seen. The choice of the ‘proto livery’ really looks good too! First-rate looking model!!
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Old 12-24-2016, 06:45 PM   #9 (permalink)
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Default Re: Ten engines … the SARO Princess

Very informative history. Really good pictures as well. Thanks so much for sharing.
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