hesham said:
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