m Robot - Moving category Japanese bomber aircraft 1940–1949 to Category:1940s Japanese bomber aircraft per CFD at Wikipedia:Categories for discussion/Log/2019 April 19. |
|||
Line 50: | Line 50: | ||
==Specifications (G8N1)== |
==Specifications (G8N1)== |
||
[[File:Nakajima G8N1 Renzan - 3D drawing.svg|right|400px]] |
[[File:Nakajima G8N1 Renzan - 3D drawing.svg|right|400px]] |
||
{{Aircraft specs |
|||
{{aircraft specifications |
|||
|plane or copter?= plane |
|||
|jet or prop?= prop |
|||
|ref=''Japanese Aircraft of the Pacific War''<ref name=Francillon1979p441/> |
|ref=''Japanese Aircraft of the Pacific War''<ref name=Francillon1979p441/> |
||
|prime units?=met |
|||
|crew= ten |
|||
<!-- |
|||
|capacity= |
|||
General characteristics |
|||
|payload main= |
|||
--> |
|||
|payload alt= |
|||
|crew=10 |
|||
|length main= 22.94 m |
|||
|length |
|length m=22.935 |
||
|length note= |
|||
|span main= 32.54 m |
|||
|span |
|span m=32.54 |
||
|span note= |
|||
|height main= 7.20 m |
|||
|height |
|height m=7.2 |
||
|height note= |
|||
|area main= 112 m² |
|||
|area |
|wing area sqm=112 |
||
|wing area note= |
|||
|airfoil= |
|||
|aspect ratio=<!-- sailplanes --> |
|||
|empty weight main= 17,400 kg |
|||
|airfoil='''root:''' K251 ; '''tip:''' K159<ref name="Selig">{{cite web |last1=Lednicer |first1=David |title=The Incomplete Guide to Airfoil Usage |url=https://m-selig.ae.illinois.edu/ads/aircraft.html |website=m-selig.ae.illinois.edu |accessdate=16 April 2019}}</ref> |
|||
|empty weight alt= 38,400 lb |
|||
| |
|empty weight kg=17400 |
||
| |
|empty weight note= |
||
|gross weight kg=26800 |
|||
|useful load main= |
|||
|gross weight note= |
|||
|useful load alt= |
|||
|max takeoff weight |
|max takeoff weight kg=32150 |
||
|max takeoff weight |
|max takeoff weight note= |
||
|fuel capacity= |
|||
|more general= |
|more general= |
||
<!-- |
|||
|engine (prop)= [[Nakajima Homare|Nakajima NK9K-L Homare 24]] |
|||
Powerplant |
|||
|type of prop= 18-cylinder radial engines |
|||
--> |
|||
|number of props= 4 |
|||
|eng1 number=4 |
|||
|power main= 1,491 kW |
|||
|eng1 name= [[Nakajima NK9K-L Homare 24]] |
|||
|power alt= 2,000 hp |
|||
|eng1 type=18-cylinder air-cooled radila piston engines |
|||
|power original= |
|||
|eng1 hp=2000 |
|||
|max speed main= 576 km/h |
|||
|eng1 note=for take-off |
|||
|max speed alt= 358 mph |
|||
::::{{cvt|1850|hp|order=flip|0}} at {{cvt|8000|m|0}} |
|||
|cruise speed main= |
|||
|cruise speed alt= |
|||
|prop blade number=4 |
|||
|stall speed main= |
|||
|prop name=constant-speed metal propellers |
|||
|stall speed alt= |
|||
|prop dia m=<!-- propeller aircraft --> |
|||
|never exceed speed main= |
|||
|prop dia note= |
|||
|never exceed speed alt= |
|||
<!-- |
|||
|range main= 7,250 km |
|||
Performance |
|||
|range alt= 4,500 miles |
|||
--> |
|||
|ceiling main= 10,200 m |
|||
|max speed kmh=593 |
|||
|ceiling alt= 33,500 ft |
|||
|max speed note= at {{cvt|8000|m|0}} |
|||
|climb rate main= 457 m/min |
|||
|cruise speed kmh=370 |
|||
|climb rate alt= 1,500 ft/min |
|||
|cruise speed note= at {{cvt|4000|m|0}} |
|||
|loading main= 239 kg/m² |
|||
|stall speed kmh= |
|||
|loading alt= 49 lb/ft² |
|||
|stall speed note= |
|||
|thrust/weight= |
|||
|never exceed speed kmh= |
|||
|power/mass main= 0.22 kW/kg |
|||
|never exceed speed note= |
|||
|power/mass alt= 0.14 hp/lb |
|||
|minimum control speed kmh= |
|||
|minimum control speed note= |
|||
|range km=3945 |
|||
|range note= |
|||
|combat range km= |
|||
|combat range note= |
|||
|ferry range km=7464 |
|||
|ferry range note= |
|||
|endurance=<!-- if range unknown --> |
|||
|ceiling m=10200 |
|||
|ceiling note= |
|||
|g limits=<!-- aerobatic --> |
|||
|roll rate=<!-- aerobatic --> |
|||
|climb rate ms= |
|||
|climb rate note= |
|||
|time to altitude={{cvt|8000|m|0}} in 17 minutes 34 seconds |
|||
|wing loading kg/m2=239.3 |
|||
|wing loading note= |
|||
|fuel consumption kg/km= |
|||
|power/mass={{cvt|0.1333|hp/lb|kW/kg|order=flip}} |
|||
|more performance= |
|more performance= |
||
<!-- |
|||
|armament= |
|||
Armament |
|||
* 6× 20 mm [[Type 99 cannon]] - 2 each in the dorsal, ventral, and tail turrets |
|||
--> |
|||
* 2× 13 mm (.51 in) [[Type 2 machine gun]]s in nose turret |
|||
|guns=</br> |
|||
* 2× 13 mm (.51 in) Type 2 machine gun in fuselage sides |
|||
** 6× 20 mm [[Type 99 cannon]] - 2 each in the dorsal, ventral, and tail turrets |
|||
* Up to 4,000 kg (8,818 lb) of bombs |
|||
* *2× 13 mm (.51 in) [[Type 2 machine gun]]s in nose turret |
|||
** 2× 13 mm (.51 in) Type 2 machine gun in fuselage sides |
|||
|bombs=</br> |
|||
** 2x {{cvt|2000|kg|0}} bombs - maximum |
|||
** 4x {{cvt|250|kg|0}} bombs - normal |
|||
|avionics= |
|avionics= |
||
}} |
}} |
Revision as of 08:03, 5 June 2019
G8N Renzan | |
---|---|
Role | Heavy bomber |
Manufacturer | Nakajima Aircraft Company |
First flight | 23 October 1944 |
Introduction | early 1945 |
Retired | August 1945 |
Primary user | Imperial Japanese Navy Air Service |
Produced | 4 |
The Nakajima G8N Renzan (連山, "Mountain Range") was a four-engine long-range bomber designed for use by the Imperial Japanese Navy. The Navy designation was "Type 18 land-based attack aircraft" (十八試陸上攻撃機); the Allied code name was "Rita".
Design and development
In February 1943 the Imperial Navy staff asked Nakajima Aircraft Company to design a four-engined bomber, capable of meeting an earlier specification set for a long-range land-based attack plane. The final specification, issued on 14 September 1943, called for a plane with a maximum speed of 320 knots (590 km/h; 370 mph) able to carry a 4,000 kg (8,800 lb) bomb-load 2,000 nmi (3,700 km; 2,300 mi) or a reduced bomb-load 4,000 nmi (7,400 km; 4,600 mi).[1]
Nakajima's design featured a mid-mounted wing of small area and high aspect ratio, a tricycle landing gear and a large single-fin rudder. Power came from four 2,000 hp Nakajima NK9K-L "Homare" 24 radial engines with Hitachi 92 turbosuperchargers and driving four-bladed propellers. The engines were cooled by counter-rotating fans positioned just inside the engine cowlings.[1] Defensive armament included power-operated nose, dorsal, ventral and tail turrets along with two free-swiveling machine guns at the beam positions.[2]
Operational history
The initial prototype was completed in October 1944 and delivered to the Navy for testing in January 1945, a year after the Navy ordered development to start. Three further examples were completed by June 1945, with the third prototype being destroyed on the ground by US carrier aircraft.[2]
Other than minor problems with the turbosuperchargers, the Renzan performed satisfactorily and the Navy hoped to have a total of 16 prototypes and 48 production-version G8N1s assembled by September 1945. But the worsening war situation and a critical shortage of light aluminium alloys led to the project's cancellation in June.[2]
One proposed variant was the G8N2 Renzan-Kai Model 22, powered by four 2,200 hp Mitsubishi MK9A radial engines and modified to accept attachment of the air-launched Ohka Type 33 Special Attack Bomber.[2]
Just before Japan's surrender in August 1945 consideration was also briefly given to producing an all-steel version of the aircraft, to be designated G8N3 Renzan-Kai Model 23, but the cessation of hostilities precluded any further development.[2]
After the war, one prototype was taken to the United States[3][4] and scrapped after testing. None are in existence today.
Variants
- G8N1 : Four-engine heavy bomber. Production version.
- G8N2 : Modified to carry Ohka Type 33 Special Attack Bomber. Four Mitsubishi MK9A radial engines.
- G8N3 : All-steel airframe.
Operators
Specifications (G8N1)
Data from Japanese Aircraft of the Pacific War[2]
General characteristics
- Crew: 10
- Length: 22.935 m (75 ft 3 in)
- Wingspan: 32.54 m (106 ft 9 in)
- Height: 7.2 m (23 ft 7 in)
- Wing area: 112 m2 (1,210 sq ft)
- Airfoil: root: K251 ; tip: K159[5]
- Empty weight: 17,400 kg (38,360 lb)
- Gross weight: 26,800 kg (59,084 lb)
- Max takeoff weight: 32,150 kg (70,879 lb)
- Powerplant: 4 × Nakajima NK9K-L Homare 24 18-cylinder air-cooled radila piston engines, 1,500 kW (2,000 hp) each for take-off
- 1,380 kW (1,850 hp) at 8,000 m (26,247 ft)
- Propellers: 4-bladed constant-speed metal propellers
Performance
- Maximum speed: 593 km/h (368 mph, 320 kn) at 8,000 m (26,247 ft)
- Cruise speed: 370 km/h (230 mph, 200 kn) at 4,000 m (13,123 ft)
- Range: 3,945 km (2,451 mi, 2,130 nmi)
- Ferry range: 7,464 km (4,638 mi, 4,030 nmi)
- Service ceiling: 10,200 m (33,500 ft)
- Time to altitude: 8,000 m (26,247 ft) in 17 minutes 34 seconds
- Wing loading: 239.3 kg/m2 (49.0 lb/sq ft)
- Power/mass: 0.2191 kW/kg (0.1333 hp/lb)
Armament
- Guns:
- 6× 20 mm Type 99 cannon - 2 each in the dorsal, ventral, and tail turrets
- *2× 13 mm (.51 in) Type 2 machine guns in nose turret
- 2× 13 mm (.51 in) Type 2 machine gun in fuselage sides
- Bombs:
- 2x 2,000 kg (4,409 lb) bombs - maximum
- 4x 250 kg (551 lb) bombs - normal
See also
Aircraft of comparable role, configuration, and era
- Avro Lincoln
- Consolidated B-24 Liberator
- Boeing B-29 Superfortress
- Focke-Wulf Fw 191C
- Focke-Wulf Fw 261
- Heinkel He 177B
- Junkers Ju 290
- Martin XB-33A Super Marauder
- Petlyakov Pe-8
References
- Notes
- ^ a b Francillon, p. 440.
- ^ a b c d e f Francillon 1979, p. 441.
- ^ Thorpe 1977, p. 27.
- ^ A G8N "Rita" in the USA via http://www.ww2incolor.com
- ^ Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.
- Bibliography
- Collier, Basil. Japanese Aircraft of World War II. New York: Mayflower Books, 1979. ISBN 0-8317-5137-1.
- Francillon, Ph.D., René J. Japanese Aircraft of the Pacific War. London: Putnam & Company Ltd., 2nd edition 1979. ISBN 0-370-30251-6.
- Thorpe, Donald W. Japanese Naval Air Force Camouflage and Markings World War II. Fallbrook, California: Aero Publishers, Inc., 1977. ISBN 0-8168-6583-3. (hc.) ISBN 0-8168-6587-6 (pbk.)
- Unknown authors. Famous Airplanes of the World: Nakajima Shinzan / Renzan (Volume 11, no.146). Japan: Bunrin-Do, Nov. 1984.