Sukhoi T-4
Sotka


Sukhoi T-4 "Sotka" model in 1/72 scale of Amodel

Early in the nineteen-sixties, the Soviet VVS commander came up with a requirement for primarily a Soviet very high speed supersonic attack aircraft. Its envisaged performance was a top speed of over MACH 3 , range of 6,000 km and a take-off weight of 100,000 kg . Sukhoi came with a proposal, the T-4 with a delta wing configuration with small canards, and it was approved that Sukhoi went ahead, involving many other research organisations in the USSR. During development, the relations were not very good between the Sukhoi Design Bureau and the VVS Authorization Committee due to lack of resources, capacity and many defects in many components. 

Design work continued and the type promised to become leading edge aeronautic technology. The nose could be drooped down for take-off and landing visibility and would be straight at high speed supersonic flight. Below the large delta wing, a massive jet engines installation was present with four RD36-41 turbojets

The first "101" prototype was ready not before the end of 1971 and it flew for the first time on August 22, 1972. This prototype performed reasonably well and had acceptable handling qualities. Work was started on some additional test planes to test various technical components like avionics and weapons systems.  However, the whole project was stopped for very unclear political reasons by the top of the Communist Party. 
The prototype went to the VVS museum at Monino (where it still is). 

Design Top Speed: over Mach 3
Wingspan  22.7 m
Length  44.5 m
Height  11.2 m 


Amodel of the Ukraine issued in early 2003 a 1/72 kit of the T-4 , kit no. # 72001. 

What do you get?
As usual for many large Amodel kits, it has a fiberglass main fuselage and center wing with many sprues with about 100 "short run" plastic parts. The leading- and trailing edges are provided in plastic to get sharp edges. 

All parts need significant clean-up, but nothing that can not be done by a modeller with some experience. Although the parts are not of the high quality of most  current injection moulded kits, you can make a very special and unusual model. You will need a lot of filler and do sanding however. The panel lines on most parts are inscribed. 

The instruction sheets have 10 steps with Humbrol colours indicated, of which I think colour "D" is medium grey. You also get a small simple but adequate decal sheet for the overall metal finished T-4 as currently in Monino.

Building the kit
I started making the kit with cutting out forward fuselage spine and intake area as indicated in step 6 of the instructions with a razor saw. 

Next, the cockpit interior may benefit from adding some extra details from sprue and instrument panels from the spare box as you can set the crew entry hatches open. The interior was painted the medium grey with red seat cushions.

The windscreen part # 31 I replaced by bending a piece of acetate clear sheet to get a better end-result to avoid using the separate unclear windows. 

New shield, the window frames still to be painted on.

Also, the hatch windows were not used, but rather Microscale Kristal Kleer was used later on. 

The nose wheel bay area has separate parts.

The side panels #77 + 78 needed considerable sanding to get a smooth result. 

The engine exhaust pipes are a bit crude but can be used.

For the intakes, it was decided to make some intake cover plates from plastic card, painted bright red.
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The many wheels are terribly moulded with holes and shrinkage and need a lot of work to get reasonable results through filling and sanding. 

The canards were assembled at the very last stage, after the metal finish had been applied.


The vertical tail and the outboard wing leading edges and trailing edge parts did not fit very well. Filler and lots of sanding is needed here.
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the forward fuselage was added... no need to put the movable nose at this stage, can be "clicked" in place at the end. 

Assembly of the kit otherwise went OK.

Finishing
Using a BADGER 150 airbrush, the overall model was first given a light grey primer coat to check for any flaws. These were corrected with putty and sanding where needed. As the real plane was natural metal with several hues, it was decided to use the ACLAD II system. So the next base coat was gloss back. Next, a coat of ALCLAD II titanium was applied with some panels in steel.


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Next, some panels were painted dark grey and black as indicated and after the few decals were applied, the overall model got a protective coat of gloss Johnson Future varnish.

The nose was set in place and fixed down with a drop of superglue

Adding some small details like pitot tubes from metal needles, the landing gear and doors completed the model.

The T-4 "Sotka" ....

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Cockpit area, note the instrument panels added from spare decals


Note the new windshield; pitot tubes on the nose sides and the nose tip were added made from metal needles. 

The intake area with the added red covers. 

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Notice the cranked delta wing for the high supersonic speeds.


The end-result is a very remarkable model in the 1/72 Soviet collection.
 


References:

http://www.aeronautics.ru/sukhoi/t4okbsukhoi01.htm

http://www.testpilot.ru/russia/sukhoi/t/4/t4_e.htm

OKB Sukhoi, about the design Buro, Aerofax / Midland publishing, 1996 , ISBN 1857800125
                     pages 206-

 

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created this page
December 27, 2007