Watanabe E9W1

九六式小型水上偵察機(E9W1)
     
Název:
Name:
Watanabe E9W1 Watanabe E9W1
Originální název:
Original Name:
九六式小型水上偵察機(E9W)
Kategorie:
Category:
průzkumný/pozorovací letoun reconnaissance/scout aeroplane
Výrobce:
Producer:
DD.MM.1935-DD.MM.1940 Watanabe Iron Works, Ltd., Fukuoka /
Období výroby:
Production Period:
DD.03.1934-DD.MM.1940
Vyrobeno kusů:
Number of Produced:
32 + 1 prototyp
První vzlet:
Maiden Flight:
DD.02.1935
Osádka:
Crew:
2
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:
dvouplošník biplane
Uspořádání letounu:
Aircraft Concept:
klasické conventional
Podvozek:
Undercarriage:
pevný fixed
Přistávací zařízení:
Landing Gear:
plováky floats
Technické údaje:
Technical Data:
 
Hmotnost prázdného letounu:
Empty Weight:
847 kg 1867 lb
Vzletová hmotnost:
Take-off Weight:
1210 kg 2668 lb
Maximální vzletová hmotnost:
Maximum Take-off Weight:
? kg ? lb
Rozpětí:
Wingspan:
9,980 m 32ft 8,91in
Délka:
Length:
7,640 m 25ft 0,79in
Výška:
Height:
3,290 m 10ft 9,53in
Plocha křídla:
Wing Area:
22,08 m2 237.67 ft2
Plošné zatížení:
Wing Loading:
54,75 kg/m2 11.21 lb/ft2
Pohon:
Propulsion:
 
Kategorie:
Category:
pístový piston
Počet motorů:
Number of Engines:
1
Typ:
Type:
Hitači GK-2 Tempu 12 (Ha-22-12), vzduchem chlazený hvězdicový devítiválec o vzletovém výkonu 250 kW (340 k) a 221 kW (300 k) v h= 0 m.
Vrtule nestavitelná dřevěná dvoulistá o průměru 2 600 mm.
Hitachi GK2 Tempu 12 nine-cylinder air-cooled radial engine, rated at 335 hp for take-off, and 396 hp at sea level,
driving a two-blade wooden fixed-pitch propeller of 8ft 6,3in diameter.
Objem palivových nádrží:
Fuel Tank Capacity:
? ?
Výkony:
Performance:
 
Maximální rychlost:
Maximum Speed:
233 km/h v 2600 m 144.8 mph in 8530 ft
Cestovní rychlost:
Cruise Speed:
148 km/h v 1500 m 92 mph in 4921 ft
Rychlost stoupání:
Climb Rate:
5,317 m/s 1046.7 ft/min
Čas výstupu na výšku:
Time to Climb to:
9.68 min do 3000 m 9.68 min to 9843 ft
Operační dostup:
Service Ceiling:
6740 m 22113 ft
Dolet:
Range:
590 km 366.6 mi
Maximální dolet:
Maximum Range:
730 km 453.6 mi
Výzbroj:
Armament:
1x pohyblivý kulomet Type 92 ráže 7,7 mm One flexible rearward-firing 0.303 inch Type 92 machine-gun for the observer.
Uživatelské státy:
User States:
Poznámka:
Note:
渡辺 海軍九六式小型水上機 [E9W1] - Malý námořní letoun Watanabe typ 96 (E9W1)
Letová vytrvalost: 4,9 h
Popis v dalším příspěvku.
渡辺 海軍九六式小型水上機 [E9W1]- Navy Type 96 Small Reconnaissance Seaplane (E9W1)
Allied Code Name: "Slim"


Endurance: 4 hours 55 minutes


The Watanabe E9W was a submarine-borne reconnaissance seaplane, the first aircraft designed by Kabushiki Kaisha Watanabe Tekosho, chief designer was Ryohachiro Higuchi. In January 1934, the Imperial Japanese Navy had a requirement 9-Shi for a two-seat reconnaissance seaplane to be operated from its I-3 class submarines, and placed an order with Watanabe for design and development of an aircraft to meet this requirement, the first of three prototypes flying in February 1935. The E9W was a two-seat single-engine twin-float unequal-span seaplane designed to be easily dismantled for hangar stowage on a submarine.
Zdroje:
Sources:
Famous Airplanes Of The World No. 47, Imperial Japanese Navy Reconnaissance Seaplane, Bunrindo Co., Ltd., rok 1997, ISBN4-83919-044-X
René J. Francillon Ph.D., Japanese Aircraft of the Pacific War, Naval Institute Press, Annapolis Maryland, Reprinted 1990, ISBN-0-87021-313-X
Tadeusz Januszewski a Kryzysztof Zalewski, Japońskie samoloty marynarski 1912-1945, tiel 1., Lampart, rok 2000, ISBN: 83-86776-50-1
Václav Němeček, Vojenská letadla 3 díl, druhé doplněné vydání, Naše Vojsko, Praha 1992, ISBN 80-206-0117-1
http://www.samoloty.ow.pl/str299.htm
http://www.airwar.ru/enc/sww2/e9w.html
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Watanabe E9W1


九六式型水上機[E9W1]/ - / "small naval aircraft type 96-1"
Codename: Slim


History:

In 1934, the Japanese Naval Air Command (海軍航空本部 Kaigun Kōkū Hombu) compiled its 9-Shi specifications. These specifications, among other things, formulated the technical requirements for a small reconnaissance seaplane for large cruiser-type submarines, designated Type 3. It was in 1934 that the Navy began construction of submarines of this class. The observation floatplanes were to be housed in an exploded state in a watertight case on the deck of the submarine. The Japanese Imperial Navy already had experience with this category of aircraft, having tested the prototype Yokosho 1-Go since 1927, and later the Yokosho 2-Go and an improved prototype Yokosho 2-Go Kai, from 1931 onwards used a six not-so-successful seaplanes on submarines, designated as the "Naval Light Reconnaissance Floatplane Type 91 Model 1" or abbreviated Yokosuka E6Y1. The technical requirements contained in the above specifications placed great emphasis on the small size of the assembled aircraft so that it could be stored in relatively small cases, but equally important was the requirement for speed and ease of assembly and for reassembly of the aircraft into its case. In early 1934, the Navy handed over these requirements directly, i.e. without competition, to a smaller but rapidly expanding company, 渡辺鉄工所 株式会社 Watanabe Tekkosho Kabushiki Kaisha (hereafter Watanabe), which had recently completed a new aircraft factory in Zasshonokuma.


The design team at the aircraft factory was led by chief designer Ryohachiro Higuchi, and work on the small reconnaissance aircraft project began as early as March 1934. Here I must mention the fact that this was the first independent aircraft design of this company, Watanabe until then had only been involved in the construction of various aircraft components, which were then supplied to other aircraft manufacturers, and if any aircraft had been produced, it had been a small number of license production until then. The design team submitted its design to the Navy for approval and shortly after this approval began construction of two prototypes. First they built one airframe without an engine so that the composition and layout of the aircraft could be tested, and after these tests strength tests were carried out on this airframe in a destructive manner, in which the airframe was destroyed.


The first flying prototype was completed in February 1935, and was a two-seat biplane of mixed construction, the crew sitting in two open cabins behind each other. The aircraft had two main floats and was powered by a 300 hp Hitachi GK-2 Tempu 11 radial nine-cylinder engine, this engine was soon replaced by a slightly more powerful version of the Tempu 12 (340 hp), the propeller remained the same - a two-bladed wooden one.


The aircraft looked quite sleek and the Navy was pleased with its flight and nautical characteristics. Tests were conducted on the submarine I-5 and the very first assembly of the aircraft was done in a fantastic time of 2 min 26 sec and the reverse assembly was done in an incredible time of 1.5 minutes. The armament of the aircraft became a subject of discussion, the designers considered the barrel armament to be completely unnecessary, because in a reconnaissance flight over the ocean, when the aircraft was only to search for suitable targets for attack by a mother submarine, there was very little chance of encountering enemy aircraft. However, Naval Aviation officials stubbornly insisted on installing a Type 92 moving machine gun in the rear cabin. The Type 92 machine gun used was actually a licensed Lewis machine gun from World War I. This weapon was quite popular in the Japanese Air Force.


After successful trials, mass production was ordered by the Navy in October 1935 and the machine was accepted into service as the "Small Naval Aircraft Type 96" or E9W1 for short. The first submarine to receive these aircraft on board was the I-7, followed by others produced. Production of the aircraft continued gradually according to the needs of the Navy, and a total of thirty-two aircraft were thus produced.


The first operational deployment occurred in 1938 in the China Sea. By the time war broke out in the Pacific, the aircraft was obsolete and was gradually being replaced by the more modern Yokosuka E14Y1 (in United States Glen coding) on board cruiser-type submarines. However, the fact that the older aircraft was being replaced did not mean that it was immediately retired completely; by mid-1942 there were still fourteen of these outdated biplanes in active service. It is of some interest that its use and four-year operational deployment in the China Sea completely escaped Allied intelligence, and the codename Slim was only assigned after the wreckage of one crashed aircraft was found, and then only at a time when the aircraft had been virtually retired from operational service. The designers' opinion about the uselessness of a defensive machine gun was confirmed.


Sources used:
René J. Francillon Ph.D., Japanese Aircraft of the Pacific War, Naval Institute Press, Annapolis Maryland, Reprinted 1990, ISBN-0-87021-313-X
Tadeusz Januszewski and Kryzysztof Zalewski, Japońskie samoloty marynarski 1912-1945, vol. 1, Lampart, 2000, ISBN: 83-86776-50-1
http://www.samoloty.ow.pl/str299.htm
http://www.airwar.ru/enc/sww2/e9w.html
http://military.sakura.ne.jp/ac/e9w.htm
author's archive
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Camouflage side view
Watanabe E9W1 -


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Fotografie
Watanabe E9W1 -


Watanabe E9W1 -


Watanabe E9W1 -


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Náčrtek - pohled z boku
Watanabe E9W1 -


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Použité prameny:
René J. Francillon Ph.D., Japanese Aircraft of the Pacific War, Naval Institute Press, Annapolis Maryland, Reprinted 1990, ISBN-0-87021-313-X
Robert C. Mikesh a Shorzoe Abe, Japanese Aircraft 1910-1941, Naval Institute Press, Anapolis, rok 1990, ISBN: 1557505632
Famous Airplanes Of The World No. 47, Imperiál Japanese Navy Reconnaissance Seaplane, Bunrindo Co., Ltd., rok 1997, ISBN4-83919-044-X
Tadeusz Januszewski a Kryzysztof Zalewski, Japońskie samoloty marynarski 1912-1945 tiel 1., Lampart, rok 2000, ISBN: 83-86776-50-1
Tadeusz Januszewski, Japanese Submarine Aircraft, Mushroom Model Publications, Sandomierz, rok 2002, ISBN-10: 8391632725
L+K 26/1993, str. 25, Letadla 39-45, Václav Němeček
http://www.airwar.ru/enc/sww2/e9w.html
http://www.samoloty.ow.pl/str299.htm
http://jnpassieux.chez-alice.fr/html/E9W.php
http://samoloty.webd.pl/japonskie/slim.htm
archiv autora
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