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Author Topic: Grigorovich aircraft and projects  (Read 8505 times)

Offline igor-mich

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Re: Grigorovich aircraft and projects
« Reply #15 on: July 28, 2010, 02:46:43 am »
Iverson: Sorry I did not realize how little information.

Offline redstar72

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Re: Grigorovich aircraft and projects
« Reply #16 on: July 28, 2010, 12:51:41 pm »
to borovik
Anatoly, thank you very much for the clarification! The mystery of DG-57 is revealed... but the solution is very unexpected for me. I have read the article from Samolety mira 2/2000 some years ago, so I knew this project - but I can't even guess that it was DG-57. I forgot the date 1936 given in the article, and I was sure that it's earlier design, with smaller number. With its big, thick wing, Townend engine cowlings, open turrets on the bomber version - it looks rather obsolete compared with DG-54, 55, 56, and 58.

And it's still a question about "NR" project. Are you confirm that it didn't obtain any DG-number? Or was it also "DG-58" as a part of the same "Ivanov" program, although totally different from the final version?

Also I have one more question: were there any DG-numbers before 52? When did Grigorovich begin to use this kind of designations? Did he assign any DG-numbers to his earlier designs, such as I-Z, TB-5, I-2, or maybe even M-9 etc.?
Best regards,
Alexander

Offline igor-mich

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Re: Grigorovich aircraft and projects
« Reply #17 on: July 28, 2010, 02:08:44 pm »
All aircraft program "Ivanov" had one engine   were presented  КБ Grigorovich,  Polikarpov, Ilyushin, Kochergina, Neman, Sukhoi. These projects were to replace the outdated intelligence Polikarpov R-5, the aircraft must be with a crew of two people and serve as a scout but also lung function bomber. The aircraft had the designation Grigorovich DG-58.
At this point the designation AT occurs from DG-52.
Can Grigorovich wanted to show that their productive work?

Offline hesham

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Offline steelpillow

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Re: Grigorovich aircraft and projects
« Reply #19 on: September 15, 2016, 06:36:23 am »
The DG-55;

http://alternathistory.com/samolety-dmitriya-grigorovicha-chast-33
Here is Google Translate's more or less raw effort at rendering it in English:

Dmitry Grigorovich Aircraft Part 33
The last of D.P.G. Sports aircraft DG-55

In respect of this unit during the period of its existence it has been used several names: E-2, "Comet", "Komsomolskaya Pravda". The Design Bureau of aircraft Grigorovich was defined as "sports tourism". Its occurrence is directly related to the fall of 1934 held a high-speed air travel from the UK to Australia. The absolute winner of the race became a British twin-engine monoplane tselnoderevyannaya De Havilland "Comet» (D.H.88 Comet), equipped with an engine capacity of 225 hp Of the two copies with the registration G-ACSS number of this type of aircraft involved overcame 19800 km in 70 h 54 min.

The results of the Australian trip, and especially monoplane "Comet" with the stated maximum speed of 380 km / h, aroused great interest among Soviet engineers. It is known that the subject of the air races even discussed in the aviation industry leadership in the autumn of 1934 was assumed, in particular, to build such a plane at the military option with a range of 2,500 km and a bomb load of 300-500 kg. The task for a twin-engine unit, similar to the British "Comet", was transferred to the Aviation Plant №1 Grigorovich, who led the overall guidance for its establishment. The aircraft received the name of the E-2 (Experimental - second) and the serial number are already signs Grigorovich - DW-55. The immediate supervisor of design and construction of the machine DG-55 is a graduate of the Moscow Higher Technical School, glider, engineer SN Lyushin. However, the main actors in creating the plane began eight girls-designers: MA Pobedonostsev, M. Skachkova, Hmurets N., W. Long, L. Sibirkina 3. Andreev, E. Rozhkova and Krylov.

[3-view drawing]

Magazine "The aircraft» №6, 1936, wrote:

"Our task is - to create such aircraft, which, thanks to the flight data and management simplicity will be widely used in communication, sports, training flights and to serve the local executive committees. Based on these considerations, Plant. Aviakhim decided to construct a sports plane, fully meets the requirements of mass aviation. The problem is successfully solved - the plant designed and completed the construction of a twin-engine sports and training aircraft E-2.

    The history of this aircraft is unusual: it is completely designed and built according to the drawings of eight women: Marina Pobedonostsev, Mary Skachkova, Natalia Hmurets, Faith Long, Lydia Sibirkina, Zinaida Andreeva, Lisa and Rozhkova Maria Krylova - plant constructors. This clear and very serious task was given to a talented group: to construct a modern light sport aircraft.

    The task consisted of the following prerequisites: a large cruising speed, low landing speed, large range and the use of the latest achievements of aviation equipment.

    With lively interest and enthusiasm characteristic of Soviet youth began the first girl to his independent and equally important work. At the head of the brigade was set Marina Pobedonostsev. All work was conducted under the guidance and advice of chief designer Professor Plant DP Grigorovich who appeared to initiate construction of the aircraft.

    E-2 - a two-seat low-wing, fuselage monocoque type, cantilever empennage, wing-box type with a thick wooden paneling. The spar wooden, box-section chassis is retractable, the original scheme constructively performed with motor frames, located on the wing. Driving chassis lift - rope.

    The aircraft is equipped with brake wheels; in flight in the wheel removed streamlined hoods under engines. Winter wheels are replaced by skis, which are also removed during the flight.

    The aircraft has a maximum speed of 300 km / h. This is a high-speed sport aircraft. Due to the special flap-type metal structure Tsap landing speed is reduced to 85 km / h.

    The ceiling of the aircraft - 6000 km. Large capacity petrol tank allows for non-stop flights on distance 2,200 km.

    The aircraft are equipped for night flights and has dual controls, allowing you to carry on the plane and the flight of the second cabin, and use it for training purposes. The tail assembly is controlled Flettner, which leads to the relief of the control.

    E-2 differs elegance of its forms. Outstanding forward cabin is designed for a pilot and a mechanic or a passenger. On the wings of the two motor power in 120 hp each hidden in radomes; motor installation far brought forward from the wing.

    The cockpit of the pilot and the passenger is closed lamp, which forms a limousine. Reserve strength of the structure allows the aircraft to do the figure, which is particularly valuable in training and training flights.

    In order to obtain the best aerodynamic qualities, all the details of the design, protruding on the fuselage, and slicked it rendered streamlined shape; the entire surface of the plane polished and lacquered; made a smooth transition from the streamlined fuselage to the wings.

    Women's team had a lot of work on the creation of his plane. Successful completion of the construction is the result of the E-2 was surrounded by all the attention of the plant, which is interested in the fact that the creative thought of the best representatives of the plant got its concrete expression.

    Plant Manager t Belenkovich, CTO of T Shekunov, head of an experienced management t Korotchaev performing construction and social organization of the plant -... All have Pobedonostsev Marina and her team help.

    A special role in the victory of the youth women's team belongs to Honored aviation DP Grigorovich, to educate is not a group of talented designers of the Soviet "


[photo]

The plane of the DW-55 turned out to be quite successful aircraft, he had excellent aerodynamic shape and was very clean run. Pilot Alexander Zhukov, who tested it (he called it in his own way - "maiden flight"), later recalled:

     "Excellent had a car. The speed of 300 km / h, a ceiling of 6,000 meters. Monoplane with retractable landing gear ... Notable grace of forms. "

[photos x2]

Unfortunately, the fate of the DW-55 is currently not defined. Built and tested to the end of 1936 the aircraft could well be racing sport aircraft held Central Aviation Club in 1937. However, no information about the preparation of the DW-55 for these competitions were found.

[illustration]

In conclusion, adding that the DW-55 was equipped with two engines Cirrus "Hermes" with a capacity of 120 hp, which had the following technical data and design characteristics:

Wingspan (m)   11.0

A flight path length (m)   7.94

In the line of flight height (m)   3,335

Track chassis (m)   2.7

Wing area (m²)   13.85

Weight structure (kg)   590

Full load (kg)   495

Flying Weight (kg)   1546

Wing loading (kg / m²)   119

Maximum speed at sea level (km / h)   296

The rate of maximum 3,000 m (km / h)   271

Landing speed with flaps (km / h)   100

Service ceiling (m)   5000

Range max (km)   2000
Cheers.

Offline hesham

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Re: Grigorovich aircraft and projects
« Reply #20 on: September 15, 2016, 07:05:52 am »
Thank you my dear Steelpillow.

Offline blackkite

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Re: Grigorovich aircraft and projects
« Reply #21 on: January 10, 2017, 06:38:20 am »
Hi! DG-56.
https://www.ecured.cu/Grigorovich_LK-3
http://coollib.net/b/296272/read
"In early 1936, the AIR FORCE offered a number of Management. Design bureaus to begin designing combat high-speed monoplane, defined as ground attack aircraft or military reconnaissance aircraft (XB). Actually sought to create a multipurpose aircraft capable of a Stormtrooper following technical requirements:
1. speed of 450-470 km/h.combine functions, far Scout and light bomber. As the powerplant used engine am-34frn, takeoff power rating 1200 HP-it seemed the most appropriate at the time for the implementation of this task, as was the real product of the domestic aircraft industry. For project preparation the
2. normal Range 2000 km, with overload-4000 km.
3. Crew-2 person.
4. For bomber bomb load was to be 400-500 kg, maximum, when overloading is 1000 kg.
During the year, design collectives Grigorovich, Polikarpova, Neman, Kocherigina, dry and Ilyushin made their proposals at the level of preliminary designs.
December 20, 1936 head of ICPC M.m. Kaganovich in its report note in the Government "of resources-Scouts along with great range and speed," confirmed the fact of most of these projects are multi-purpose aircraft. Grigorovich on projects indicated that it developed two variants: KB nizkoplana and vysokoplana.
Vysokoplana Grigorovich project with the installation of the engine high above the wing was originally designed with the subsequent processing of the seaplane. Against him stated that this option gives a good overview and shelling in the forward hemisphere for the observer. The negative side was called the complexity of installation and operation of the engine, reducing the maximum speed and unusual for land vehicles equipment piloting.
However, prior to detailed development of both projects is vysokoplana and nizkoplana is not reached. In early 1937, the idea of establishing itself a multipurpose plane visibly transformed and received a sequel in the form of a draft-Smith ", now engine-oriented m-62. Grigorovich constructor in this program is no longer involved.
The main settlement characteristics of LC-3 (DG-56)
Wingspan, m 20.0, The length of the flight line, m 13.0, Height, parked, 4.9 m, Wing area: 53.0 m², Design weight (kg) 1940 Full load, kg 2220
Gross weight, kg 5675
Wing loading, 111.0 kg/m2
Bombs, kg. 200 (overload)
Maximum speed, in the 5000 m, km/h. 428, Flight range (km) 1900
Light cruiser LC-3 (DG-56)
The exact date of the project or abandoning its continued development. Probably, the aircraft design was carried out throughout the d. 1935 it was at this time in the leadership of the Red Army AIR FORCE celebrated interest in high-speed flexible aircraft for which used the definition "light cruiser" (LC). Tasks for such aircraft were called protection of its bombers and destroying enemy aircraft, flying in large units. The project "light cruiser" Grigorovich was designated BM-3 (DG-56). Aircraft intended under two engines "Hispano Suiza" 12Ybrs declared maximum power for 860 HP DG-56 stood out graceful outline, the plane had landing gear, smooth lining. The crew consisted of two or three people. Armament was expected from two dinamoreaktivnyh guns APK-4 calibre 76 mm or 2 x SHVAK Cannon-calibre 20 mm."
« Last Edit: January 10, 2017, 04:08:37 pm by blackkite »

Offline blackkite

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Re: Grigorovich aircraft and projects
« Reply #22 on: January 10, 2017, 06:42:43 am »
Hi! DG-58.
« Last Edit: January 10, 2017, 06:47:29 am by blackkite »

Offline blackkite

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« Last Edit: January 10, 2017, 08:36:37 pm by blackkite »

Online iverson

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Re: Grigorovich aircraft and projects
« Reply #24 on: January 14, 2017, 03:00:46 pm »
I've attached drawings of the Grigorevich I-Z and IP.

Offline hesham

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Re: Grigorovich aircraft and projects
« Reply #25 on: January 14, 2017, 03:19:27 pm »
Nice work Iverson.

Offline blackkite

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Re: Grigorovich aircraft and projects
« Reply #26 on: January 14, 2017, 03:32:39 pm »
Beautiful!! I can see recoilless cannon clearly. I-Z wing design is impressive. :o
« Last Edit: January 14, 2017, 03:46:42 pm by blackkite »

Offline blackkite

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Re: Grigorovich aircraft and projects
« Reply #27 on: January 17, 2017, 01:28:50 am »
Hi!
Diagram of the far reconnaissance-attack aircraft with m-34frn D.p. Grigorovich.

http://alternathistory.com/oleg-rastrenin-shturmoviki-velikoi-otechestvennoi-voiny-glava-2-voiskovoi-samolet
« Last Edit: January 17, 2017, 01:30:28 am by blackkite »