other less known japanese aircraft projects

[airman]

On wikipedia https://en.wikipedia.org/wiki/Japanese_military_aircraft_designation_systems

we have Nakajima Ki-13 ( attacker airplane) , Mitsubishi Ki-14 (recon. coop.) , Kawasaki Ki-22 , Tachikawa Ki-29 , Mitsubishi Ki-42 ( Heavy Bomber ) , Nakajima Ki-37 ( fighter) , Mitsubishi ki-39 , Mitsubishi Ki-40 ( HQ Recon. ) , Mitsubishi Ki-47 (L. Bomber ) , Mitsubishi Ki- 50 ( H. Bomber ) and experimental Kawasaki Ki-89 all aircraft remained remained at state of projects .

Sorry but my desire of knowlegde is uncontainable

 

[blackkite]

Nakajima Ki-13 was a unknown project still now. Official document are not survived or not discovered.
Gakken "The IJA aircraft" says that Ki-13 was a heavy armed recon-bomber. Ki-13 was a successor of Kawasaki 88-shiki recon and Nakajima 94-shiki recon.

Mitsubishi Ki-14 was a unknown project still now,too. Official document are not survived or not discovered.
Gakken "The IJA aircraft" says that Mitsubishi Ki-14 was a reconnaissance, transporting supplies, artillery spotting duties aricraft.

Ki-14 was a successor of Mitsubishi 92-shiki recon?

 

[blackkite]

Kawasaki Ki-22 was a competitor of Nakajima Ki-19 heavy bomber and Mitsubishi Ki-21 heavy bomber. This competition was planned in1935.
Ki-22 was terminated when basic design inspection by the IJA.

 

[blackkite]

According to Gakken's book, Tachikawa Ki-29 was a light bomber which targets were enemy aircraft at the air field and enemy base which did not need heavy weapon to destroy it. The IJA ordered Tachikawa to develop this light bomber in February 1936. This project terminated when basic design inspection by the IJA.
Specification
Span : 12m, Length : 7m, Height : 2.6m, Wing area : 19 square meter, Empty weight : 1,420kg, Gross weight : 1,760kg, Maximum speed : 485km/h,
Range : 1,000km, Armament : two 7.7mm gun.

This specification is almost same as Tachikawa Ki-36 specification except maximum speed requirement.
https://en.wikipedia.org/wiki/Tachikawa_Ki-36
"Ki-36 General characteristics
Crew: two
Length: 8.00m (25ft 3in)
Wingspan: 11.80m (38ft 8.5in)
Height: 3.64m (11ft 11.25in)
Wing area: 20m² (215.29ft²)
Empty weight: 1,247kg (2,749lb)
Loaded weight: 1,660kg (3,660lb)
Powerplant: 1 × Hitachi Army Type 98 Ha-13a nine cylinder air-cooled radial engine, 380kW (510hp)
Performance
Maximum speed: 348km/h (216mph)
Cruise speed: 235km/h (146mph)
Range: 1,235km (767mi)
Service ceiling: 8,150m (26,740ft)
Wing loading: 83kg/m² (17lb/ft²)
Power/mass: 0.23kW/kg (0.31hp/kg; 0.14hp/lb)
Time to 3000m (9,845ft): 6min 39sec
Armament
one fixed, forward-firing 7.7mm (0.303in) machine-gun , one flexible 7.7mm (0.303in) machine-gun in rear cockpit.
up to 150kg (331lb) external bombload."

 

[blackkite]

Mitsubishi Ki-42 was a heavy bomber planned in 1937. Only basic research was done by Mitsubishi. Ki-42 detail is unknown stll now.

Nakajima Ki-37, Kawasaki Ki-38 and Mitsubishi Ki-39 were twin engine two seat fighter-bomber, planned in 1937.Only basic design were done.
Ki-38 design became Ki-45 base design.

Mitsubishi Ki-40 was a long range high speed recon planned in 1937. Only basic research was done. There is a possibility that Ki-40 was a Ki-39 sister aircraft.

Source : Gakken "The IJA aircrfat".

Ki-38.
http://www.secretprojects.co.uk/forum/index.php/topic,27588.msg229358.html#msg229358

Chart Japanese words translation
キ : ki, 計画中止 : Plan cancellation、不採用 : Declined, 年 : year, 月 : month, 主翼をはじめとした部品流用 : Parts diversion such as main wing, 九九式双発軽爆撃機 : 99-shiki twin engine light bomber, 正式採用 : It's adopted formally, 製造 : production, 改 : modification type, 二式複座戦闘機 : 2-shiki two seat fighter, 屠龍 : Toryu, 単座戦闘機 : single seat fighter, 性能向上型 : The performance improvement type, 高高度戦闘機型 : The high altitude fighter type, 甲 : ko(a), 乙 : Otsu(b), 丙 : Hei(c), 襲撃機型 : Attack aircraft type, 夜間戦闘機型 : night fighter type, 試作 : experimental production, 与圧キャビン装備 : with pressurized cabin

 

[blackkite]

Mitsubishi Ki-47 was a light bomber planned in 1937. Ki-47 was a Ki-48 like light bomber?

Ki-48.
https://en.wikipedia.org/wiki/Kawasaki_Ki-48

 

[blackkite]

Mitsubishi Ki-50 was a competitor of Nakajima Ki-49/100-shiki heavy bomber, planned in 1935.
But Mitsubishi was very busy because of Ki-21/97-shiki heavy bomber modification.
Ki-50 design might be terminated when basic design inspection by the IJA.
Ki-21Ⅱ flight performance was superior compared with Ki-49. So it's possible to assume that Ki-50 was realized as Ki-21Ⅱ.
Source : Gakken "The IJA aircraft".

Side view source.
http://alternathistory.com/samolet-dlya-dalnikh-pereletov-mitsubishi-ohtori-yaponiya

 

[airman]

Thanks you very much blackkite !! B)

 

[blackkite]

Hi! My image for Nakajima Ki-117 fighter.
Ki-117 was a Hayate with powerful Ha-44(Ha-219, take off power : 2,400hp) engine without turbocharger.
Ki-117 planned to begin production in October 1945.
Span : 12.3m, Length : 10.18m, Wing area : 22.3 square meter, Empty weight : 3,540kg, Gross weight : 4,797kg, Maximum speed : 670km/h, Range : 1577km, two 20mm cannon.

I set propeller diameter 4m same as Tachikawa Ki-94Ⅱ which had a Ha-44 engine. Too larger? ;D
Ki-84 Hayate propeller diameter is 3.05m.

 

[airman]

thank you : i know nakajima ki-117 by 2 volume of japanese aircraft projects !

 

[woodville]

Does any one have more information & illustrations of the Toa-Koken No 1 & No 2 Passenger Hydroplanes of 1925/1926? I have attached a photo of No 2 from Encyclopaedia of Japanese Aircraft volume 8. In this volume it states that No 1 began a test run at the port of Fukuoka carrying 28 people on 14/10/1925 but came to grief. No 2 attempted a flight on 31/10/1926 carrying 35 people but collided with a stone tower & was destroyed. Nonetheless it apparently underwent repairs which were completed in March 1927 but it wasn't then allowed to operate.

 

[Mavrick5]

Toa-koken No 2 Passenger Hydroplane? This is new to me too. Does anyone have more information?

 

[fugaku1706]

Má někdo více informací a ilustrací osobních hydroplánů Toa-Koken č. 1 a č. 2 z let 1925/1926? Přiložil jsem fotografii č. 2 z Encyklopedie japonských letadel svazek 8. V tomto svazku se uvádí, že č. 1 zahájila zkušební jízdu v přístavu Fukuoka s 28 lidmi dne 14. 10. 1925, ale byla zarmoucena. Č. 2 se 31. 10. 1926 pokusil o let s 35 lidmi, ale srazil se s kamennou věží a byl zničen. Přesto zřejmě prošel opravami, které byly dokončeny v březnu 1927, ale poté již nebyl povolen.

V archivu jsem našel jen lepší fotku, ale jinak nic a nemůžu přečíst popis fotky.

 

[Mavrick5]

Great! Thank you

 

[Tonton-42]

Does any one have more information & illustrations of the Toa-Koken No 1 & No 2 Passenger Hydroplanes of 1925/1926? I have attached a photo of No 2 from Encyclopaedia of Japanese Aircraft volume 8. In this volume it states that No 1 began a test run at the port of Fukuoka carrying 28 people on 14/10/1925 but came to grief. No 2 attempted a flight on 31/10/1926 carrying 35 people but collided with a stone tower & was destroyed. Nonetheless it apparently underwent repairs which were completed in March 1927 but it wasn't then allowed to operate.

Note the strong French influence for aesthetics ...