Military Factory logo

Nakajima G10N Fugaku (Mount Fuji)

Imperial Japan (1944)
Picture of Nakajima G10N Fugaku (Mount Fuji) Very-Long-Range Heavy Bomber Proposal

What began as an Army long-range heavy bomber program for Japan during World War 2 became the short-lived Nakajima G10N Fugaku for the Imperial Japanese Navy - none were produced.


Detailing the development and operational history of the Nakajima G10N Fugaku (Mount Fuji) Very-Long-Range Heavy Bomber Proposal.

 Entry last updated on 5/6/2016. Authored by Staff Writer. Content ©www.MilitaryFactory.com

Just as the Germans devised their "Amerika Bomber" program of World War 2 (1939-1945) to attack American cities and industry on the East Coast so too did the Empire of Japan in an effort to thwart production and incite fear along the American West Coast and beyond. The Nakajima G10N "Fugaku" ("Mount Fuji") very-long-range heavy bomber was being developed for this very purpose during the middle-war years. The program was begun in 1943 and a manufacturing facility even arranged for its construction but the complex nature of the intended engines, coupled with the ambitious nature of the program as a whole, forced its cancellation in 1944 in favor of more pressing needs.

The large bomber was given a wingspan of 207 feet, a length of 131 feet, and a height of 28.8 feet. Its configuration was largely conventional relying on a large-area monoplane wing seated ahead of midships, a forward-mounted flight deck, and a traditional single-finned tail unit. The undercarriage was to be jettisonable to help lighten operating loads for the long journey ahead.

Power was initially to come from 6 x Nakajima Ha-44 36-cylinder radial engines of 5,000 horsepower each though these remained in development and proved unreliable for the interim - destined to hole the Fugaku project back. Its complexity led to the selection of the Nakajima NK11A 18-cylinder, air-cooled radial piston engine of 2,500 horsepower - three engine nacelles being fitted to each wing mainplane - and driving a pair of four-bladed constant speed propeller units through a contra-rotating action. The operating crew numbered between seven and eight personnel and planned defensive armament was 4 x 20mm Type 99 series cannons. The internal bombload was 44,000lb of conventional drop stores.

The G10N1 was born from the Japanese Army's "Project Z" initiative of 1942 and evolved to become a Japanese Navy endeavor involving Nakajima. The original design idea was to have a bomber platform with enough inherent endurance to carry it from the northern-based Kuril Islands near the Japanese mainland all the way to the United States - providing access to targets along the West Coast, the Midwest and, ultimately, the East Coast. As Japan maintained a wartime alliance with Germany, the bomber would then be tasked to leave American airspace and find itself en route to German-occupied territories in Europe where it could safely refuel and rearm. The bomber would fly high enough and fast enough to avoid enemy ground-based fire and interceptors. The project also covered a heavy-lift transport model as well as a fixed-wing, forty-gun "gunship" armed with downward-firing armament - but none of these were furthered beyond the "paper stage".

Estimated performance specifications of the proposed IJN "Fugaku" bomber - which was essentially an evolved version of the IJA "Project Z" product - included a maximum speed of 485 miles per hour, a range of 12,055 miles, and a service ceiling of 49,215 feet. The latter quality would necessitate pressurized crew sections for high-altitude survival.

No mockups or prototypes of the G10N were ever attempted as the project was ended almost as soon as it began in 1944 following the fall of Iwo Jima to the Americans. By this time, territorial and material losses (particularly in aircraft carriers) for Japan across the Pacific Theater and Asia were mounting and its war-making resources back home were under ever-growing pressure to stem the tide of defeat. This led to a design and production focus on defensive-minded fighter types and, as such, large heavy bomber projects became the least of Japan's concerns going into 1945 as defense of the homeland proved the call-of-the-day. This fate befell many of the German Amerika Bomber projects as well.

Any available statistics for the Nakajima G10N Fugaku (Mount Fuji) Very-Long-Range Heavy Bomber Proposal are showcased in the areas immediately below. Categories include basic specifications covering country-of-origin, operational status, manufacture(s) and total quantitative production. Other qualities showcased are related to structural values (namely dimensions), installed power and standard day performance figures, installed or proposed armament and mission equipment (if any), global users (from A-to-Z) and series model variants (if any).






Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

Image of collection of graph types

Relative Maximum Speed Rating
Hi: 500mph
Lo: 250mph
    This entry's maximum listed speed (485mph).

    Graph average of 375 miles-per-hour.
Relative Operational Ranges
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Graph showcases the Nakajima G10N Fugaku (Mount Fuji)'s operational range (on internal fuel) when compared to distances between major cities.
Aviation Era Impact
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
0
0


  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


Altitude Visualization
Small airplane graphic
  Compare this entry against other aircraft using our Comparison Tool  
Nakajima G10N Fugaku (Mount Fuji) Specifications
National Flag Graphic
Imperial Japan
Year: 1944
Type: Very-Long-Range Heavy Bomber Proposal
Manufacturer(s): Nakajima Aircraft Company - Imperial Japan
Production: 0
Supported Mission Types
Air-to-Air
Interception
Unmanned
Ground Attack
Close-Air Support
Training
Anti-Submarine
Anti-Ship
Airborne Early Warning
MEDEVAC
Electronic Warfare
Maritime/Navy
Aerial Tanker
Utility/Transport
Passenger Industry
VIP Travel
Business Travel
Search/Rescue
Recon/Scouting
Special Forces
X-Plane/Development
Structural
Crew: 7
Length: 131.17 ft (39.98 m)
Width: 206.59 ft (62.97 m)
Height: 28.77 ft (8.77 m)
Empty Weight: 74,516 lb (33,800 kg)
MTOW: 154,324 lb (70,000 kg)


Installed Power
6 x Nakajima NK11A 18-cylinder air-cooled radial piston engines developing 2,500 horsepower and driving four-bladed propellers in contra-rotating fashion.

Standard Day Performance
Maximum Speed: 485 mph (780 kph; 421 kts)
Maximum Range: 12,055 mi (19,400 km; 10,475 nm)
Service Ceiling: 49,213 ft (15,000 m; 9.32 mi)


Armament
PROPOSED STANDARD:
4 x 20mm Type 99 cannons in defensive positions.

PROPOSED OPTIONAL:
Up to 44,100lb of internally-held conventional drop stores.


Operators List
Imperial Japan (cancelled)

Series Model Variants
• G10N "Fugaku" - Base Project Designation


Supported Weapon Systems
Graphical image of an aircrat automatic cannon
Graphical image of an aircraft conventional drop bomb munition