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*Kawasaki OH-1 "Ninja"* is a Japanese light armed reconnaissance and surveillance helicopter. It was developed by *Kawasaki Heavy Industries* for the **Japan Ground Self-Defense Force (JGSDF)**. Here is a detailed explanation of the OH-1 Ninja:

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*1. Background and Objectives*

The OH-1 was developed in the 1990s to replace the old *OH-6D Cayuse* reconnaissance helicopters used by the JGSDF. Japan needed a modern helicopter capable of performing reconnaissance and surveillance missions under modern conditions, with domestic technology.

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*2. Design and General Characteristics*

*Main role:* Reconnaissance and observation
*Crew:* 2 (pilot and co-pilot/reconnaissance)
*Length:* About 13.4 meters
*Rotor diameter:* 11.6 meters
*Height:* 3.8 meters
*Empty weight:* About 2,600 kg
*Maximum takeoff weight:* About 4,000 kg

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*3. Engine and Performance*

*Engine:* 2 × Mitsubishi TS1-M-10 turboshaft (license-built by Rolls-Royce Gem)
*Maximum speed:* About 278 km/h
*Operational range:* About 500 km
*Flight time:* About 3 hours

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*4. Technology Features*

*Stealth design:* Reduces radar signature and heat
*Advanced avionics:* Equipped with electro-optical system, FLIR (Forward-Looking Infrared), and laser rangefinder
*Fly-by-wire system*
*Fenestron tail rotor:* Closed rotor type that is quieter and safer

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*5. Armament*

By default, the OH-1 is **not heavily armed**. However, it can carry:

*70 mm rocket pod*
*Light machine gun*
However, the main focus is on surveillance missions, not attack.

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*6. Production and Operational Status*

First flight: *1996*
Entered service: *2000*
Limited production (approximately 38 units)
Used exclusively by the JGSDF
Not sold overseas due to Japan's strict arms export policy

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*7. The name "Ninja"*

The nickname *"Ninja"* was given because of:

Its stealthy reconnaissance ability
Speed ​​and agility
Stealth design that makes it difficult to detect, like a ninja

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*Conclusion*

The Kawasaki OH-1 Ninja is a symbol of Japan's aviation technology capability in making advanced military helicopters with stealth features, although its production is limited. It plays an important role in providing battlefield intelligence and reconnaissance support for Japanese ground forces.