Chetverikov Aircraft

hesham

hesham

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Hi,

the OKB Chyetverikov was a Soviet aircraft design bureau headed by designer Igor
Vyacheslavovich Chyetverikov at the TsAGI (Tsentrahl'nyy Aerodinamicheskiy i
Ghidrodinamicheskiy Institoot- central aerodynamics and hydrodynamics institute)
Menzhinskii factory in 1931 in order to produce flying boat and airplanes.

Its aircraft were;

MDR-3
SPL
ARK-3
MDR-6 (Che-2)
MDR-6A
MDR-6B
MDR-6B2
MDR-6B3
MDR-6B4
MDR-6B5
LK-1
TA
TA-1
TAF
KOR-2L
PPI (Che-1)
I-AM37
PT1-M82
PT-2M82
T-2M82
Jet Bomber

- I will speak about them later
 

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Apophenia said:
Does anyone know what the original OSGA-101 designation (for the SPL) stood for?

My guess would be:
OS = Obshchestvo Sodeystviya* +
G = Gidro (Hydro) +
A = Aviatsiya (Aviation)

But I'd like to know for sure ...
_____________________________________

* ie: the first 2 x letters in contracted Osoaviakhim
Click to expand...
Hi all

Oтдел строительства глиссеров и аэросаней (Department of construction of hydroplanes and snowmobiles)
 
Missing from your list :
  • Type 11
  • MR-3
  • OSGA
hesham said:
SPL
Click to expand...
The SPL was also known as the SPL-1 and the "Gidro-1" (Hydro-1).

hesham said:
MDR-3
Click to expand...
The MDR-3 was also known as the TsKB N° 11 (from Zavod N° 39).

hesham said:
MDR-6 (Che-2)
MDR-6A
MDR-6B
MDR-6B2
MDR-6B3
MDR-6B4
MDR-6B5
Click to expand...
MDR-6 variants included B-1 to B-6.

hesham said:
ARK-3
Click to expand...
The ARK-3 was also known as the MP-2.

hesham said:
TA
TA-1
TAF
Click to expand...
All three designations refered to the same aircraft, didn't they?

hesham said:
PTI-M82
PT-2M82
Click to expand...
There was no such thing as a "PTI-M82". It was the PT-1M-82.

1747238110721.png
 
Stargazer said:
Missing from your list : [...]

All three designations refered to the same aircraft, didn't they? [...]

There was no such thing as a "PTI-M82". It was the PT-1M-82.
Click to expand...

All related, yes. It seems like the TA was the prototype (as first revealed); TA-1 was improved version (1947-1948); TAF was a reconnaissance variant prototype.

On other Chyetverikov subtype designations, there was the ARK-3-1 (retroactive for first prototype); ARK-3-2 (revised second prototype); and ARK-3 MP2 (akin to your MP2).

OKB Chetverikov also suggested a Shvetsov M-71 powered PT-1 variant. So, was there also a 'PT-1M71'? (If so, I've never seen reference to it.)

FWIW, on the twin-engined PT-2M82, I've also seen it referred to as PT-82 (perhaps an informal clipped form?) and PT-2M-ASh-82 (using the later Shvetsov prefix).

I presume that the "Jet Bomber" refers to Chetverikov's LK-1 twin-Nene jet bomber concept? The LK-1 reached approval for a mockup stage (although I'm not sure if that mockup was ever built). The 'LK' prefix was for letayushcheye krylo or flying wing.

Also missing from the list is the T-2M82 twin-tailled medium bomber concept. And KOR-2 flying boat should be Chetverikov KOR-2L.

BTW, both Chetverikov and Chyetverikov transliterations are being used here. hesham, perhaps you could amend the title to Chetverikov/Chyetverikov Aircraft?
 
Here we go,

MDR-3 was a high-wing long range flying boat monoplane,as a patrol and
maritime aircraft,powered by four 680 hp BMW VI piston engines
SPL was a high-wing submarine borne flying boat monoplane,powered
by 100 hp M-11 piston engine
OSGA-101 was the non folding first prototype of the SPL
Gidro-1 was the SPL prototype renamed after transfer to Osoaviakhim
ARK-3 was a high-wing multi role flying boat monoplane,powered by
two 730 hp M-25A piston engine
MDR-6 was a high-wing reconnaissance flying boat monoplane,powered
by two M-25A radial engines
Che-2 was a production version of MDR-6, powered by two M-63 radial
engines
MDR-6A was a redesign with smaller wing and two Klimov M-105 V-12
engines
MDR-6B1 was a version with retract floats resgaped for better hydrodynamics
properties
MDR-6B2 & B3 were a refined developments of MDR-6A
MDR-6B4 was an almost redesign the hull,beam increased to 2.2m and
fixed floats
MDR6-B5 was similar to B4,except forward hull 0,5m longer to put a pilot
ahead of propellers,no central fin,engines in streamlined cowls and it was
powered by two VK-107A engines
LK-1 was a three-seat high-swept-wing tailless medium jet bomber project,fitted
with twin tail fin at leading edge,powered by two Nene engines,could carry 2 ton
TA was a parasol wing amphibian transport monoplane,designed crew of two
and six to eight passenger plus one ton cargo,powered by two Shvetsov ASh-21
engines
TA-1 was the second prototype of the TA with retractable floats, area increasing flaps
and other changes
TAF was the third of the TA family was a photographic and survey aircraft with tapered
outer wings of greater span
KOR-2L was a partasol-wing ship a reconaissance flying boat,for the "Big Sea and
ocean-going fleet,powered by 900 hp M-62 engine
PPI (Che-1) was a mid-wing five-cannon twin engined heavy fighter monoplane
project,powered by two Klimov M-107 engines
I-AM37 was a single seat shoulder wing unorthodox fighter monoplane project,
powered by single AM-37 engine,driven two propellers,and the engine buried in
the fuselage
PT-1M82 was a two-seat mid inverted gull wing shipboard torpedo bomber
monoplane project,powered by one M-82 engine
PT-2M82 was a two-seat mid-wing torpedo bomber monoplane project,had
twin tail fin,and powered by two M-82 engines,mounted in the wings
T-2M82 was mid-high-wing four-seat tactical bomber and torpedo bomber
monoplane project,powered by two M-82 engines,mounted in the wings
Jet Bomber was another jet bomber,powered by four 800 hp BMW 003
axial-flow engines,looks like Ardao Ar.234
MR-4bis ?
Che-?


- To be continued
 
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The LK-1 is missing from your final list (but the "Jet Bomber" remains). Perhaps something like this ...

Chetverikov LK-1 - (Project) 1947 twin-jet flying wing bomber
- LK-1 : Swept-wings with endplate fins; mid-span jet engines
- LK-1 : (Initial?) 2 x German Jumo 004 or 4 x BMW 003 jets
- LK-1 : (Revised) 2 x RD-45 turbojets (licensed R-R Nenes)
- LK-1 : Nose resembled Ar 234; tail position 2 x 20mm ShVAK
-- Devel. cancelled late 1948 (Chetverikov's OKB-458 closed)

Can I ask what your source is for the 4-engined "Jet Bomber"? If it was Nikolay Yakubovich, I believe that he was the one who identified proposed Soviet Arado Ar 234 derivatives (based on remains of 2 x captured examples) to be powered by recovered German turbojets - 4 x BMW 003s or 2 x Jumo 004s (as per the wartime Ar 234B and Ar 234C variants).

It could be that your 4-engined "Jet Bomber" was simply OKB-458's study of the Ar 234C layout - which would make sense of your "looks like Ardao Ar.234". (For the flying wing LK-1, that Arado resemblance only extended to the nose section.) I'm not entirely certain whether that powerplant concept ever made it as far as Chetverikov's more original LK-1 layout.

On your "MR-4bis", I can find no online mention of this designation outside of unreferenced Wiki listings (or mirrors of same).
 
Apophenia said:
On your "MR-4bis", I can find no online mention of this designation outside of unreferenced Wiki listings (or mirrors of same).
Click to expand...
The existence of an "MR-4bis" suggests there would have been an MR-4 prior to that.
The #4 slot is actually the only one missing from my MR (Морской Разведчик, or Sea Scout) list. Anyone know more about an MR-4 project?
 
For the source about Jet Bomber,it's Unflown Wings,and in old reference,the LK-1
was called RK-1,but I correct it.

About MR-4,I will search more about it ?.
 

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Regarding the designation MR-4.

Maslov's article "Dmitry Grigorovich's Airplanes" in the Aviation and Cosmonautics magazine No. 11/2012.



In the period 1923-24, 43 copies of the M-24 were produced at the Krasny Aviator. These were the last flying boats with the "M" index, built taking into account the experience and knowledge of the period 1915-18. At least twenty M-24, belonging to the second series were equipped with Renault engines with increased power to 260 hp. There were other minor differences in the specified batch, so these boats were sometimes identified as M-24bis. However, in the RCF system, the new

flying boat was designated MR-4 (marine scout - fourth).

Here is what the Baltic aviation experts wrote in the last days of July 1925 regarding the MR-4:

"The plane has three seats, but with a passenger in the bow, the boat has a large draft, buries itself in the water. In the air, it is more stable having three people on board; with two, it presses on the handle and lifts up



М-24bis = MR-4
 

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