KAWASAKI POWER JET-KPJ-A Series, PJ-20
Kawasaki Heavy Induetries, Ltd., (KHI) has been manufacturing PJ- 20 Water-Jet Propulsors for Kawasaki Jetfoils since 1989. Kawasaki has also developed the KPJ-A series of Water-Jet Propulsors for high- speed marine craft. The first unit of the KPJ-A series (KPJ-1A) was completed in 1993, and four KPJ-169A units were installed on a 100-meter high-speed ferry of Kawasaki Jet Piercer in 1994.
Eight KPJ-54A units were delivered or under manufacturing.
KPJ-A series
Kawasaki completed the first unit and conducted an actual load test in Kawasaki dry dock to prove its high efficiency and enough strength in 1993.
Model : KPJ-1A (KPJ-43A equivalent)
Type : Single stage axial flow, flush inlet
Input power : 515kW
Four units were installed on a 100-meter Kawasaki Jet Piercer in 1994.
Model: KPJ-169A
Type: Single stage axial flow, flush inlet
Input power: 5,420kW/4,060kW, each 2 units
Features
1. High suction specific speed allows large power absorption under low ship-speed condition and provides high maneuverability in harbor by applying a special axial flow type impeller.
2. Well-prepared variety of models realizes the best matching of engine, water-jet propulsor and hull.
3. Higher propulsive efficiency through the research and development of impeller, stator, nozzle and inlet duct design.
4. Compact reverser-deflector mechanism.
PJ-20
This unit was designed by Rockwell International Corporation (USA) to match with hydrofoils such as the Kawasaki Jetfoil. This business was transferred to KHI in 1987.
Type : axial flow
Input power : 2,795kW/2,060rpm
Features
1. High suction specific speed allows maximum power absorption at take-off operation.
2. Compact design and light materials result in light weight of 700kg (dry).
3. Different materials are electrically isolated to prevent galvanic corrosion.
