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Kawasaki OH-1 Ninja

Japan (2000)
Picture of Kawasaki OH-1 Ninja Light Armed Reconnaissance Helicopter
Picture of Kawasaki OH-1 Ninja Light Armed Reconnaissance Helicopter

Kawasaki designed and developed the OH-1 as an indigenous replacement for the Hughes OH-6 in the reconnaissance helicopter role.


Detailing the development and operational history of the Kawasaki OH-1 Ninja Light Armed Reconnaissance Helicopter.  Entry last updated on 11/18/2017. Authored by Staff Writer. Content ©www.MilitaryFactory.com

For decades the Japanese Ground Self-Defense Force (JGSDF) has made use of the American Hughes OH-6 "Cayuse" light observation helicopter in the reconnaissance role. Better known as the "Loach", the nimble single-engined aircraft served in similar roles with a bevy of nations around the globe. The OH-6 was produced in Japan locally under the Kawasaki brand label as the OH-6J and the follow-up OH-6D. The former was based on the Loach whilst the latter stemmed from the similar Hughes 500D model. Some 387 examples were produced by Kawasaki of which around 100 300 are in active operational service as of this writing (2012).

Thought eventually gave way to design and development of an indigenous light scout helicopter solution in the 1980s and this gave rise to the OH-X helicopter program. As competitions go, the program was responded to by Fuji, Kawasaki and Mitsubishi of which all submitted proposals. Ultimately, Japanese authorities selected the Kawasaki submission as the winner of the OH-X competition in September of 1992, to which it ordered prototypes under the XOH-1 designation. The aircraft has since garnered the nickname of "Ninja". Kawasaki represented the prime contractor of the XOH-1 with subcontractors Fuji ad Mitsubishi in tow (each managing a 20% stake in the project).

First flight of the XOH-1 pilot vehicle was on August 6th, 1996. five more prototypes then followed and these successfully completed initial testing the next year. After successfully completing the required tests, the JSDF formally adopted the XOH-1 as the OH-1 (the designation change coming in late 1996), scheduling serial production to begin in 1998. At the outset, the JGSDF suggested their procurement order maybe several hundred aircraft though this may not be realized amidst current budgetary constraints. As such, deliveries of OH-1s have been slow with less than 50 aircraft completed to date (2012).
The OH-1 showcases an all-modern appearance and utilizes well-established design concepts found on other military helicopters worldwide. The aircraft is crewed by two specialists seated in tandem with the pilot in the rear elevated cockpit and the weapons officer in the lower front cockpit. The nose assembly is short and well-contoured for good vision for the pilot and efficient aerodynamic qualities. As the pilots are seated in tandem, the fuselage can be made very slim and thusly promote a smaller forward profile. The engines are fitted in nacelles to either side of the fuselage, well aft of the cockpits. The four-bladed main rotor assembly sits low against the top of the fuselage while the tail rotor is shrouded in a Fenestron assembly which helps to reduce its noise output. The empennage is essentially a stem emanating from the main fuselage bulk with horizontal planes set to either side of the tail just ahead of the Fenestron fitting. Atop the tail rotor is the vertical tail fin. Wing stub assemblies are fitted to either side of the fuselage just aft of the pilot's cockpit. These can support four hardpoints for various ordnance layouts or external fuel stores. Armament is variable and can be a mix of missiles, rocket pods, cannon pods and gun pods as needed. The OH-1 does not make use of a chin-mounted turret or optics fairing common to other military helicopter designs. There does exist an optics blister above and behind the pilot's cockpit, just forward of the main rotor mast. The undercarriage is consistent with other military helicopter offerings, presenting two single-wheeled main landing gear legs extending from the forward fuselage sides and a single-wheeled tail unit at the base of the tail rotor assembly. Wire cutters (required in low-level urban flight) are noted ahead of the optical sight mount and under the cockpit floor.

Internally, the OH-1 sports some advanced technology. It relies on nearly 40% of its airframe being built from composites for a lighter overall weight. However, the blades are protected against 20mm shells. The cockpit is all-glass with a LCD monitors and dual HOCAS control systems. The pilot's cockpit is given a HUD (Heads-Up Display) that relays pertinent mission and performance parameters without the operator having to remove his view from the action ahead. In all, the OH-1 supplies the Japanese Army with a modern and capable combat support system which can work in conjunction with its existing fleet of Hughes AH-64DJP Apache and Bell Ah-1 Cobra attack helicopters in the armed scout or support roles.

The Kawasaki OH-1 is currently replacing active OH-6 units in service with the JGSDF.






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.

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Relative Maximum Speed Rating
Hi: 200mph
Lo: 100mph
    This entry's maximum listed speed (173mph).

    Graph average of 150 miles-per-hour.
City-to-City Ranges
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Graph showcases the Kawasaki OH-1 Ninja's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
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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
40
40


  * Commercial Market High belongs to Cessna 172.

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


Altitude Visualization
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Origin: Japan
Year: 2000
Type: Light Armed Reconnaissance Helicopter
Manufacturer(s): Kawasaki - Japan
Production: 40
Status: Active, In-Service
Global Operators:
Japan
Historical Commitments / Honors:

Military lapel ribbon for Operation Allied Force
Military lapel ribbon for the Arab-Israeli War
Military lapel ribbon for the Battle of Britain
Military lapel ribbon for the Battle of Midway
Military lapel ribbon for the Berlin Airlift
Military lapel ribbon for the Chaco War
Military lapel ribbon for the Cold War
Military lapel ribbon for the Cuban Missile Crisis
Military lapel ribbon for the Falklands War
Military lapel ribbon for the French-Indochina War
Military lapel ribbon for the Golden Age of Flight
Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Iran-Iraq War
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1982 Lebanon War
Military lapel ribbon for the Malayan Emergency
Military lapel ribbon for the attack on Pearl Harbor
Military lapel ribbon for the Six Day War
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Vietnam War
Military lapel ribbon for Warsaw Pact of the Cold War-era
Military lapel ribbon for the WASP (WW2)
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2
Military lapel ribbon for the Yom Kippur
* Ribbons not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective campaigns/operations.
Measurements and Weights icon
Structural - Crew, Dimensions, and Weights:
Unless otherwise noted the presented statistics below pertain to the Kawasaki OH-1 Ninja model. Common measurements, and their respective conversions, are shown when possible.

Operational
CREW


Personnel
2


Dimension
LENGTH


Feet
39.37 ft


Meters
12 m


Dimension
WIDTH


Feet
38.06 ft


Meters
11.6 m


Dimension
HEIGHT


Feet
12.47 ft


Meters
3.8 m


Weight
EMPTY


Pounds
5,401 lb


Kilograms
2,450 kg


Weight
LOADED


Pounds
8,818 lb


Kilograms
4,000 kg

Engine icon
Installed Power - Standard Day Performance:
2 x Mitsubishi TS1-M-10 turboshaft engines developing 890 horsepower each driving a four-blade main rotor and fenestron shrouded tail rotor.

Performance
SPEED


Miles-per-Hour
173 mph


Kilometers-per-Hour
278 kph


Knots
150 kts


Performance
RANGE


Miles
336 mi


Kilometers
540 km


Nautical Miles
292 nm


Performance
CEILING


Feet
16,076 ft


Meters
4,900 m


Miles
3.04 mi

Supported Weapon Systems:

Graphical image of an aircrat automatic cannon
Graphical image of an aircraft machine gun pod
Graphical image of an aircraft cannon pod
Graphical image of an aircraft rocket pod
Armament - Hardpoints (4):

Variable - dependent upon mission type. May include a mix of missiles, rocket pods, gun pods and cannon pods as required.
Variants: Series Model Variants
• XOH-1 - Prototype Designation; six examples produced.
• OH-1 - Base Series Designation