Jermolajev Jer-2 2AM-37

Yermolayev Yer-2 2AM-37

Ермолаев Ер-2 2AM-37

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Název: Name:	Jermolajev Jer-2 AM-37	Yermolayev Yer-2 AM-37
Originální název: Original Name:	Ермолаев Ер-2 AM-37
Kategorie: Category:	bombardovací letoun	bomber aeroplane
Výrobce: Producer:	DD.MM.1940-DD.MM.1940 Moskevský letecký závod č. 240, Moskva / DD.MM.1941-DD.MM.1941 Voroněžský letecký závod č. 18 Vorošilova, Voroněž /
Období výroby: Production Period:	DD.MM.1940-DD.MM.1941
Vyrobeno kusů: Number of Produced:	4 konverze
První vzlet: Maiden Flight:	25.10.1940 přestavba druhého prototypu DB-240
Osádka: Crew:	4
Základní charakteristika: Basic Characteristics:
Vzlet a přistání: Take-off and Landing:	CTOL - konvenční vzlet a přistání	CTOL - conventional take-off and landing
Uspořádání křídla: Arrangement of Wing:	jednoplošník	monoplane
Uspořádání letounu: Aircraft Concept:	klasické	conventional
Podvozek: Undercarriage:	zatahovací	retractable
Přistávací zařízení: Landing Gear:	kola	wheels
Technické údaje: Technical Data:
Hmotnost prázdného letounu: Empty Weight:	8872 kg	19559 lb
Vzletová hmotnost: Take-off Weight:	12340 kg	27205 lb
Maximální vzletová hmotnost: Maximum Take-off Weight:	14500 kg	31967 lb
Rozpětí: Wingspan:	21,686 m	71ft 1,77in
Délka: Length:	16,230 m	53ft 3in
Výška: Height:	4,820 m	15ft 9,75in
Plocha křídla: Wing Area:	73,16 m²	787.49 ft²
Plošné zatížení: Wing Loading:	168,671 kg/m²	34.55 lb/ft²
Pohon: Propulsion:
Kategorie: Category:	pístový	piston
Počet motorů: Number of Engines:	2
Typ: Type:	Mikulin AM-37 kapalinou chlazený vidlicový dvanáctiválec o vzletovém výkonu 1030 kW (1 400 k). Vrtule trojlistá typu VIŠ-22T s nastavitelným úhlem náběhu o průměru 3 400 mm.	Mikulin AM-37, twelve-cylinder liquid-cooled supercharged Vee engine, rated at 1,381 hp for take-off, driving a three-blade variable-pitch Type VISh-22T propellers of 11ft 2in diameter
Objem palivových nádrží: Fuel Tank Capacity:	5 446 l + 380 l oleje	1,198 UK gallons (1,439 US gallons)
Výkony: Performance:
Maximální rychlost: Maximum Speed:	507 km/h v 6000 m	315 mph in 19685 ft
Cestovní rychlost: Cruise Speed:	408 km/h v 4000 m	253.5 mph in 13123 ft
Rychlost stoupání: Climb Rate:	7,58 m/s	1492.1 ft/min
Čas výstupu na výšku: Time to Climb to:	17,3 min do 5000 m	17,3 min to 16404 ft
Operační dostup: Service Ceiling:	10700 m	35105 ft
Dolet: Range:	2540 km	1578.3 mi
Maximální dolet: Maximum Range:	3500 km	2174.8 mi
Výzbroj: Armament:	1x pohyblivý kulomet UBT ráže 12,7 mm v předním střelišti, 300 nábojů, 1x pohyblivý kulomet UBT ráže 12,7 mm ve spodním střelišti, 300 nábojů a 1x pohyblivý kulomet UBT ráže 12,7 mm ve hřbetní střelecké věži TUM-2, 400 – 600 nábojů. Pumový náklad: do 3 000 kg. 1 000 kg pum (např. 4x FAB-250 nebo 10x FAB-100) v pumovnici a až 2 000 kg na externích závěsnících (2x FAB-1000).	One flexible 0.5 inch UBT machine-gun in nose position, 300 rounds, one flexible 0.5 inch UBT machine-gun in ventral position, 300 rounds and one flexible 0.5 inch UBT machine-gun in dorsal turret TOM-2, 400-600 rounds. Bomb load: Up to 6,614 lb. 2,204 lb in the bomb bay (four bombs FAB-250 or ten bombs FAB-100) and 4,409 lb in external hardpoints (two bombs FAB-1000).
Uživatelské státy: User States:
Poznámka: Note:	Jermolajev Jer-2 byl střední bombardér dlouhého doletu.	The Yermolayev Yer-2 was a long-range Soviet medium bomber. A five Yer-2 was modified with experimental Mikulin AM-37 engines, a reinforced undercarriage, armored seats for the navigator and gunner, and 0.5in UBT machine-guns in place of its original ShKAS weapons. The range was reduced to 2,175 mi carrying 2,205 lb of bombs. One significant problem with this version was the excessive take-off roll which hindered operations from grass airstrips, it was caused propellers of small diameter. The engine had big problems with ineffective cooling.
Zdroje: Sources:	Б. Л. Симаков, Самолеты страны Советов, 1917-1970, ДОСААФ, 1975 L+K 25/ 1991, Václav Němeček, Letadla 39-45, Jermolajev Jer-2, http://www.airwar.ru/enc/bww2/er2.html http://aviarmor.net/aww2/aircraft/ussr/er-2.htm http://eng.polymus.ru/rv/?h=news http://www.ctrl-c.liu.se/misc/RAM/yer-2.html http://base13.glasnet.ru/text/shavrov2/2-20.htm archiv autora

URL : https://www.valka.cz/Jermolajev-Jer-2-2AM-37-t161334#490684 Version : 0

Brief history:[/heading]
The soviet air force took over in 1939, long-range bombers DB-240 with reservations to his performance, which is why designer Vladimir Grigorjevič Jermolajev together with his OKB-240 tried to increase the performances of this machine. It was obvious to everybody that the engines the Klimov M-105 will have to be swapped for more powerful types, the easiest would be to install the Klimovův M-106 but one was not available. OKB-240 has received the instruction to install the DB-240 engines from the designer And. And. Mikulina and it types AM-35A and AM-37.
They were first started work on mounting the engine AM-35A engine had about 230 kg higher weight than the Klimov M-105, provided however, the performance of 1 350 to. The work on this plane, however, held back and so was earlier completed the development of engines AM-37 (1 400). These engines were installed in the second prototype of the DB-240. Unfortunately, not everything succeeded, the biggest problem was the cooling, the designers have kept the original cooling circuits completely intact, and it was for a engine with an output of about 1/3 of the higher very little. Already at the first flight 25. October 1940 with both engines sharply and dangerously overheated and all of the other test flights were, to put it with hyperbole, shorter or longer jumps (depend on air temperature), the economies were overheating with a cooling liquid and engine oil. Nemenším problem was the use of propeller you KNOW-22E with a diameter of 3 000 mm, the propeller just couldn't put the power of the new engine, the takeoff was too long and the performances overall were below the expected values.

The designers have again got to work and made a number of changes. The main modifications concerned the course of cooling the engine, into the rear parts of the engine nacelles have been installed a pair of the coolers the OP-275, the engines, although further work on the border of overheating, but in the summer of 1941 may have already been launched flight tests. Another modification was the installation of a propeller, you KNOW-22T with a diameter of 3 to 400 mm, of the propeller of larger diameter can no longer be mounted, because between the fuselage and motor nacelles was no more room. Performance slightly increased, speed increased by 14 km/h, substantially increased service ceiling and rate of climb. Other modifications concerned the installation of larger bogie wheels, improved armour and unification of defence equipment to half-inch scale machine gun UBT.

Engines Mikulin AM-37, however, were žíznivější and noticeably decreased the range of the aeroplane, but at economic speed brought the bomb load of a weight of 1 000 kg to a distance of 3 000 km.
The question remains, how many aircraft were on the standard adapted, the data differ, what is certain is that it wasn't more than five aircraft. One time it was considered about their introduction into production, because the performances were better than in Il-4, it was finally decided that prefer to have warplanes Il-2.

sources:
Б. Л. Симаков, Самолеты страны Советов, 1917-1970, ДОСААФ, 1975
L+K 25/ 1991, Václav Němeček, Aircraft 39-45, Jermolajev Jer-2,
http://www.airwar.ru/enc/bww2/er2.html
http://aviarmor.net/aww2/aircraft/ussr/er-2.htm
http://eng.polymus.ru/rv/?h=news
http://www.ctrl-c.liu.se/misc/RAM/yer-2.html
http://base13.glasnet.ru/text/shavrov2/2-20.htm
author archive .

URL : https://www.valka.cz/Jermolajev-Jer-2-2AM-37-t161334#490686 Version : 0

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Název:
Name:

Originální název:
Original Name:

Kategorie:
Category:

Výrobce:
Producer:

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Obec/City

Vlajky/Flags

Období výroby:
Production Period:

From:

Do:

Vyrobeno kusů:
Number of Produced:

První vzlet:
Maiden Flight:

Osádka:
Crew:

Základní charakteristika:
Basic Characteristics:

Vzlet a přistání:
Take-off and Landing:

Uspořádání křídla:
Arrangement of Wing:

Uspořádání letounu:
Aircraft Concept:

Podvozek:
Undercarriage:

Přistávací zařízení:
Landing Gear:

Technické údaje:
Technical Data:

Hmotnost prázdného letounu:
Empty Weight:

(kg)

(lb)

Vzletová hmotnost:
Take-off Weight:

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Maximum Take-off Weight:

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Rozpětí:
Wingspan:

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(ft in)

Délka:
Length:

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(ft in)

Výška:
Height:

(m)

(ft in)

Plocha křídla:
Wing Area:

(m²)

(ft²)

Plošné zatížení:
Wing Loading:

(kg/m²)

(lb/ft²)

Pohon:
Propulsion:

Kategorie:
Category:

Počet motorů:
Number of Engines:

Typ:
Type:

Objem palivových nádrží:
Fuel Tank Capacity:

Výkony:
Performance:

Maximální rychlost:
Maximum Speed:

(km/h) ve výšce

(m)

(mph) in

(ft)

Cestovní rychlost:
Cruise Speed:

(km/h) ve výšce

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(ft)

Rychlost stoupání:
Climb Rate:

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(ft/min)

Čas výstupu na výšku:
Time to Climb to:

(min) na výšku

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(min) to

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Operační dostup:
Service Ceiling:

(m)

(ft)

Dolet:
Range:

(km)

(mi)

Maximální dolet:
Maximum Range:

(km)

(mi)

Výzbroj:
Armament:

Uživatelské státy:
User States:

Poznámka:
Note:

Zdroje:
Sources:

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Jermolajev Jer-2 2AM-37

51 - Letadlo / Airplane

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