Kaibo Gikai KB

海防義会KB飛行艇
     
Název:
Name:
Kaibo Gikai KB - Experimentální létající člun Kaibo Gikai KB Experimental Flying-boat
Originální název:
Original Name:
海防義会KB飛行艇
Kategorie:
Category:
experimentální letoun experimental aeroplane
Výrobce:
Producer:
DD.MM.1924-DD.12.1924 Yokosuka Naval Arsenal, Yokosuka /
Období výroby:
Production Period:
DD.09.1922-DD.12.1924
Vyrobeno kusů:
Number of Produced:
1
První vzlet:
Maiden Flight:
DD.MM.1925
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:
pevný fixed
Přistávací zařízení:
Landing Gear:
člunový trup flying boat
Technické údaje:
Technical Data:
 
Hmotnost prázdného letounu:
Empty Weight:
2012 kg 4436 lb
Vzletová hmotnost:
Take-off Weight:
3086 kg 6803 lb
Maximální vzletová hmotnost:
Maximum Take-off Weight:
? kg ? lb
Rozpětí:
Wingspan:
21,780 m 71ft 5,5in
Délka:
Length:
13,950 m 45ft 9,2in
Výška:
Height:
4,000 m 13ft 1,47in
Plocha křídla:
Wing Area:
? m2 ? ft2
Plošné zatížení:
Wing Loading:
? kg/m2 ? lb/ft2
Pohon:
Propulsion:
 
Kategorie:
Category:
pístový piston
Počet motorů:
Number of Engines:
2
Typ:
Type:
BMW IIIa, vodou chlazený řadový šestiválec o vzletovém výkonu 136 kW (185 k) a 169 kW (230 k) v h= 2 000 m.
Vrtule dvoulisté kovové, později vyměněny za dvoulisté dřevěné.
BMW IIIa six-cylinder water-cooled inline engine rated at 182 hp for take-off and maximum power output 227 hp at 6,562 ft,
driving two-blade metal (later wooden) propeller.
Objem palivových nádrží:
Fuel Tank Capacity:
? ?
Výkony:
Performance:
 
Maximální rychlost:
Maximum Speed:
201.2 km/h v 0 m 125 mph in 0 ft
Cestovní rychlost:
Cruise Speed:
? km/h v ? m ? mph in ? ft
Rychlost stoupání:
Climb Rate:
? m/s ? ft/min
Čas výstupu na výšku:
Time to Climb to:
15,0 min do 3000 m 15,0 min to 9843 ft
Operační dostup:
Service Ceiling:
6500 m 21325 ft
Dolet:
Range:
? km ? mi
Maximální dolet:
Maximum Range:
? km ? mi
Výzbroj:
Armament:
žádná None
Uživatelské státy:
User States:
Poznámka:
Note:
Viz příspěvek historie letounu.
In September 1922, a patriotic organisation known as the Teikoku Kaibo Gikai (Imperial Maritime Defence Volunteer Association) recognised that an all-metal aircraft of the quality being demonstrated by other countries, had not been manufactured in Japan, and therefore undertook such a project. For the design they organised the All Metal Aeroplane Committee which consisted of leading authorities of the Aeronautical Research Institute of Tokyo Imperial University, the Army, and the Navy. Although this was a joint effort, the design was identified with the PMBRA since the main component the hull, was built by the Army Arsenal.
The airframe was nearly completed by March 1924, with the exception of the engine installation and other systems. In July of that year, the airframe was transported to the Department of Ordnance, Yokosuka Naval Arsenal, where the engines and other systems were installed. Because of development delays with the Japanese engines which were to deliver 200 hp at 3,000 m (9,843 ft), it was decided to use two 185 hp BMW IIIa engines instead. With these installed, the KB Flying-boat (KB for Kai Bo) as it was now called, was completed in December 1924.
The Kaibo Gikai KB was a twin-engined parasol-wing monoplane flying boat with a two-step hull and sponsons. It was of all-metal construction with metal stressed skin covering apart from some fabric covering on the wings and control surfaces.
After the aircraft was donated to the Navy by the Kaibo Gikai, flying trials began, with Navy test pilot Lieut-Cdr Hisakichi Akaishi, at the controls. As a result of minor modifications, the aircraft showed excellent take-off and alighting performance under light load conditions. However, on 22 March, 1926, during its seventh test flight, the aircraft was seen in a glide with both engines stopped, its gliding angle continued to steepen and it crashed into the water nearly vertical, killing all four crew members on board. The cause of the crash was attributed to a malfunction of the flight control system.


With this loss, further development of the design was ended. Considerable experience was gained the design of this aircraft and it greatly influenced design the Giyu No.3 flying-boat sponsored by the Kaibo Gikai and built by Kawasaki.
Zdroje:
Sources:
Robert C. Mikesh and Shorzoe Abe, Japanese Aircraft 1910-1941, Naval Institute Press, London, 1990, ISBN: 1-155750-563-2.
Illustrated Warplane History, The XPlanes of Imperial Japanese Army & Navy 1924 - 45, p.163 ISBN 4-7663-3292-X
http://forum.axishistory.com/viewtopic.php?t=33697
archiv autora

Kaibo Gikai KB -


Kaibo Gikai KB -


URL : https://www.valka.cz/Kaibo-Gikai-KB-t119224#409719 Version : 0
History of the aircraft:

The first all-metal seaplane designed and made in Japan was built thanks to the private initiative of a patriotic society, known under the name of Teikoku Kaibo Gikai. Its members in September of 1922 found that in Japan does not produce any all-metal aircraft. The good qualities of this design have been already demonstrated in many other countries, this was the reason to make this project a patriotic association took.

Was established by the committee, to which were invited distinguished experts on the design of the aircraft. Gathered here the army engineers from PMBRA, the Aviation research institute in Tokyo, and tokyo university. This was a joint work of the army, navy and civilian workplaces.
The committee led dr. Aikichi Tanakadate and the other members are Narihisa Yokota, who was appointed the main designer, Yuzo Hishida, Matsutaro Honda, Shuhei Iwamoto, Yoshitake Ueda, Haruhiko Uemura, Hisakichi Akaishi, Masayuki Hori, Fumio Murase and Kyohei Arisaki, a little later they were in the committee invited two engineers Keikichi Satake and Jun Okamura. On the design and construction of aircraft participated in tokyo university, the army arsenal in Tokyo, and naval arsenal in the Jokosuce.

They were first laid down requirements for the performance, which had all-metal seaplane to reach, e.g., the maximum speed should be at least 200 km/h operating altitude 3 000 metres, the aircraft had flees a distance of 2 000 km and powered by should ensure the two japanese engines with an output of 200 horsepower. The aircraft was designed as a high-wing with the wing carried on two massive sloping pylons and at the point of connection of the wing and the pylons were installed engines. Ordered construction was one seaplane and one of the fuselage, which was designed for strength tests.

In 1923, struck Japan powerful earthquake, which construction had been delayed, was the airframe completed in march 1924, the dragon was subsequently, in July shipped to jokosuckého naval arsenal, where was he in December of the same year completed. The delay brought the engines originally were to be used japanese engines, that should provide the power of 200 horses at a height of 3 000 m, these engines, but late in its development and so the decision was made to use two engines BMW IIIa.

The resulting piece was a twin-engine hornoplošný flying boat of all-metal construction, the canvas was coated with a wings and control surfaces.

The completed aircraft was donated to the navy, the flight tests were conducted in Jokosuce, behind the wheel sat a test pilot commander Hisakichi Akaishi. Already during the first flights were found excellent flight characteristics and good performance, which gave the inkling that the required performances should be easily met. 22. in march 1926, during the seventh test flight disaster occurred, which killed the whole crew and the aircraft shattered on the surface of the ocean. The accident is attributed to failure of the engines, the seaplane was seen as sharply descends with both engines pledged. Sharp angle of descent led to the almost with the impact into the water. The crash was thus completed development and testing of the airplane, designers and engineers have gained valuable kušenozsti, which in 1928 used in the construction of seaplane Giyu Well.3.

sources:
Robert C. Mikesh and Shorzoe Abe, Japanese Aircraft 1910-1941, Naval Institute Press, London, 1990, ISBN: 1-155750-563-2.
author archive
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URL : https://www.valka.cz/Kaibo-Gikai-KB-t119224#409720 Version : 0
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