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Mitsubishi Ki-109


Heavy Fighter / Bomber-Interceptor Aircraft


Imperial Japan | 1944



"The MItsubishi Ki-109 heavy fighter was designed to deal exclusively with the threat that the new American Boeing B-29 Superfortress posed to Japan."



Authored By: Staff Writer | Last Edited: 01/21/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
The Mitsubishi Ki-109 was a specialized derivative of the Mitsubishi Ki-67 heavy bomber detailed elsewhere on this site. The Ki-109 was designed specifically to deal with the growing threat posed by the high-attitude American Boeing B-29 Superfortress over the Japanese mainland. As such, the Ki-67 was selected for its adequate performance specs and considered for a new role as a bomber hunter.

Initially, the Ki-109 program was to utilize two Ki-109 aircraft working in conjunction with one version fitted with a searchlight and powerful radar while the other operated with a powerful large caliber weapon. This "hunter-killer" pairing was to work in unison at detecting incoming enemy threats and eliminating them in total darkness. The system, however, proved to be quite complicated and thusly only a single Ki-109 design would emerge, now as a day interceptor, though still mounting a large caliber weapon.

The Ki-109 retained many of the visual qualities of the Ki-67 heavy bomber. Among the chief changes were the lack of much defensive armament and the use of more powerful engines over her predecessor (2 x Mitsubishi Ha-104 series piston engines at 1,900 horsepower). The Ki-109 was defensed by only a single 12.7mm heavy caliber machine gun in the tail. Beyond that, her armament was all-offensive and consisted of a 75mm anti-aircraft cannon in the nose. This system was manually loaded but could be fired with the Ki-109 aircraft still well out of the range of the B-29's defensive machine gun armament.

The new Mitsubishi Ki-109 entered limited production that eventually totaled only some 24 total examples (2 were the day version prototypes). Though maintaining the maneuverability of the Ki-67, the system still proved to lack true high altitude performance that was required of the type. This was basically moot by this point in the war, however, as the American bombers were now conducting low-level nighttime operations for improved accuracy. The Ki-109 - at best - was a stop-gap design that never saw its true operational potential fulfilled. But such was the case when operating from a completely defensive standpoint as the Empire of Japan was by this point in the conflict.

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Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Mitsubishi Ki-109 Heavy Fighter / Bomber-Interceptor Aircraft.
2 x Mitsubishi Ha-104 radial piston engines developing 1,900 horsepower.
Propulsion
342 mph
550 kph | 297 kts
Max Speed
31,070 ft
9,470 m | 6 miles
Service Ceiling
1,367 miles
2,200 km | 1,188 nm
Operational Range
1,476 ft/min
450 m/min
Rate-of-Climb
City-to-City Ranges
Operational range when compared to distances between major cities (in KM).
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Mitsubishi Ki-109 Heavy Fighter / Bomber-Interceptor Aircraft.
4
(MANNED)
Crew
58.9 ft
17.95 m
O/A Length
73.8 ft
(22.50 m)
O/A Width
19.0 ft
(5.80 m)
O/A Height
16,367 lb
(7,424 kg)
Empty Weight
23,810 lb
(10,800 kg)
MTOW
Design Balance
The three qualities reflected below are altitude, speed, and range. The more full the box, the more balanced the design.
RANGE
ALT
SPEED
Armament
Available supported armament and special-mission equipment featured in the design of the Mitsubishi Ki-109 Heavy Fighter / Bomber-Interceptor Aircraft .
STANDARD:
1 x 75mm Type 88 cannon in nose position
1 x 12.7mm HO-103 Type 1 machine gun in tail position.
Variants
Notable series variants as part of the Mitsubishi Ki-109 family line.
Ki-67 - Bomber Variant on which the Ki-109 is based on.
Ki-109 - Heavy Fighter Bomber Interceptor; fitted with Mitsubishi Ha-104 piston engines of 1,900 horsepower each; 1 x 75mm cannon in nose position and 1 x 12.7mm machine gun in defensive tail gun position; 22 examples produced as armed version only (as in Ki-109b model proposal below).
Ki-109a - Proposed "hunter" version fitted with radar and searchlight to be used in conjunction with "killer" model.
Ki-109b - Proposed "killer" version fitted with heavy armament to be used in conjunction with "hunter" model.
Operators
Global customers who have evaluated and/or operated the Mitsubishi Ki-109. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 24 Units

Contractor(s): Mitsubishi - Japan
National flag of modern Japan

[ Imperial Japan ]
Relative Max Speed
Hi: 400mph
Lo: 200mph
Aircraft Max Listed Speed (342mph).

Graph Average of 300 MPH.
Era Crossover
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
Production Comparison
24
36183
44000
Entry compared against Ilyushin IL-2 (military) and Cessna 172 (civilian) total production.
MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030
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Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
AIR-TO-AIR COMBAT
INTERCEPTION
Recognition
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Going Further...
The Mitsubishi Ki-109 Heavy Fighter / Bomber-Interceptor Aircraft appears in the following collections:
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