×
Aviation & Aerospace - Airpower 2024 - Aircraft by Country - Aircraft Manufacturers Vehicles & Artillery - Armor 2024 - Armor by Country - Armor Manufacturers Infantry Small Arms - Warfighter 2024 - Small Arms by Country - Arms Manufacturers Warships & Submarines - Navies 2024 - Ships by Country - Shipbuilders U.S. Military Pay 2024 Military Ranks Special Forces by Country

Kawasaki Ki-78 (KEN III)


High-Speed Single-Seat, Single-Engine Research Aircraft


Imperial Japan | 1942



"A single Kawasaki Ki-78 high-speed research aircraft was developed by the Japanese Empire during World War 2 - intent on challenging the World Absolute Speed Record."



Authored By: Staff Writer | Last Edited: 07/16/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
The Kawasaki Ki-78 (KENsan III) began its development as a high-speed research aircraft intended challenge air speed records of the 1930s. All-new wings were devised to trial various load factors at speed and the program was given life through a 1938 initiative under the direction of the Aeronautical Research Institute of the University of Tokyo and the aircraft manufactured by Kwasaki Kokuki Kogyo K.K. Only one flyable examples was ever completed as World War 2 (1939-1945) disrupted the project and forever changed its fortunes.

The design incorporated a sleek fuselage, devoid of any unnecessary protrusions, with fine contouring throughout and clean lines throughout. An inline piston engine was selected to power the aircraft and this installed at the nose in the usual way. The cockpit, lightly framed, was set at midships. A raised dorsal spine blocked any useful views to the pilot's rear but this was not a combat aircraft. The empennage tapered elegantly to the rear to which a single rudder and low-set horizontal planes were fitted. The tail-dragger undercarriage was retractable with the two main legs sitting under the wings. The aircraft was constructed of all-metal including its skinning.

The smallest possible cross-section, coupled with a powerful engine, was selected for the aircraft. Overall length reached 26.5 feet with a wingspan of 26.2 feet and a height of 10 feet. Empty weight was 4,255lb against an MTOW of 5,070lb.

Power stemmed from the German Daimler-Benz DB601A V-12 inverted liquid-cooled inline piston engine of 1,550 horsepower. Additional power was had by the injection of water/methanol. Performance included a maximum speed of 435 miles per hour, a range out to 373 miles and a service ceiling of 26,000 feet.

The Ki-78 was picking up speed before World War 2 began and, with interest, authorities of the Imperial Japanese Army (IJA) moved to take over the Ki-78 project in full. Two prototypes were contracted for and work on the first began in September of 1941. The aircraft was completed in 1942 and recorded its first-flight on December 26th. Despite its good showing as a speedy mount, the Ki-78 held little military value and the program was ended in January of 1944. Just one aircraft was completed along with a sole mock-up. The second prototype lay incomplete before being scrapped.

Content ©MilitaryFactory.com; No Reproduction Permitted.
Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Kawasaki Ki-78 High-Speed Single-Seat, Single-Engine Research Aircraft.
1 x Diamler-Benz DB601A V-12 inverted liquid-cooled inline piston engine developing 1,550 horsepower.
Propulsion
435 mph
700 kph | 378 kts
Max Speed
26,247 ft
8,000 m | 5 miles
Service Ceiling
373 miles
600 km | 324 nm
Operational Range
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 Kawasaki Ki-78 High-Speed Single-Seat, Single-Engine Research Aircraft.
1
(MANNED)
Crew
26.6 ft
8.10 m
O/A Length
26.2 ft
(8.00 m)
O/A Width
10.0 ft
(3.05 m)
O/A Height
4,255 lb
(1,930 kg)
Empty Weight
5,071 lb
(2,300 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
Variants
Notable series variants as part of the Kawasaki Ki-78 (KEN III) family line.
Ki-78 - Base Series Designation
KEN III - Original project designation
Operators
Global customers who have evaluated and/or operated the Kawasaki Ki-78 (KEN III). Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 1 Units

Contractor(s): Kawasaki - Imperial Japan
National flag of modern Japan

[ Imperial Japan (cancelled) ]
Relative Max Speed
Hi: 500mph
Lo: 250mph
Aircraft Max Listed Speed (435mph).

Graph Average of 375 MPH.
Era Crossover
Pie graph section
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
Production Comparison
1
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
Aviation Timeline
EarlyYrs
WWI
Interwar
WWII
ColdWar
Postwar
Modern
Future
1 / 1
Image of the Kawasaki Ki-78 (KEN III)
Image from the Public Domain.

Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
AIR-TO-AIR COMBAT
X-PLANE
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 Kawasaki Ki-78 (KEN III) High-Speed Single-Seat, Single-Engine Research Aircraft appears in the following collections:
HOME
AVIATION INDEX
AIRCRAFT BY COUNTRY
AIRCRAFT MANUFACTURERS
COMPARE AIRCRAFT
AIRCRAFT BY CONFLICT
AIRCRAFT BY TYPE
AIRCRAFT BY DECADE
WWII AIRCRAFT
X-PLANE AIRCRAFT
Disclaimer | Privacy Policy | Cookies

2024 Military Pay Scale Military Ranks U.S. DoD Dictionary Conversion Calculators Military Alphabet Code Military Map Symbols US 5-Star Generals WW2 Weapons by Country

The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com. No A.I. was used in the generation of this content.

Part of a network of sites that includes Global Firepower, WDMMA.org, WDMMW.org, and World War Next.


©2024 www.MilitaryFactory.com • All Rights Reserved • Content ©2003-2024 (21yrs)