K-MAX

K-MAX®
An unmatched lifting workhorse

With outstanding high-hot performance, economic operation and superior reliability, the K-MAX® Aerial Truck is used in countries around the world for critical repetitive lifting, disaster response, and search and rescue operations. To date, the fleet has accumulated more than 255,000 flight hours since 1994.

K-MAX is a registered trademark of Kaman Aerospace Corporation.

Design

The simplicity of the K-MAX® design is inherently safer and more reliable.

A single engine, a single transmission, a servo-flap controlled, counter-rotating rotor with no high-pressured hydraulic system, and no tail rotor mean fewer essential systems and low maintenance costs.

The counter-rotating rotor system eliminates the need for a tail rotor drive system so all engine power goes directly to the main rotors for significantly improved lift performance, critical to maintaining power and performance at high altitudes and high temperatures.

K-MAX Design
design

Specifications

Weights and Measurements

Lift Performance — ISA +15°C (59°F)

Hover Performance — 4,000 feet, 35°C (95°F)

Powerplant

Maximum Airspeed

Fuel System

Max gross weight (with external load) 12,000 lb 5,443 kg
Max take-off weight 7,000 lb 3,175 kg
Empty weight 5,145 lb 2,334 kg
Useful load 6,855 lb 3,109 kg
Cargo hook capacity 6,000 lb 2,722 kg
Sea Level 6,000 lb 2,722 kg
5,000 feet 5,663 lb 2,574 kg
10,000 feet 5,163 lb 2,347 kg
15,000 feet 4,313 lb 1,960 kg
Hover IGE 12,000 lb 5,443 kg
Hover OGE 11,500 lb 5,216 kg
Model - Honeywell T53-17 gas turbine    
Thermodynamic rating 1,800 shaft horsepower 100 kt
Without external load 100 kt 185.2 kph
With external load 80 kt 148.2 kph
Total usable fuel 219.5 gal 831 liters
Avg fuel consumption 85 gal/hr 321.7 l/hr
Jet A fuel 557.6 lb/hr 252.9 kg/hr
Maximum endurance 12+ hr  
Maximum range 1,852km (est)  
Maximum speed with external load 148.2km/h  
Maximum speed without external load 148.2km/h  
Internal fuel endurance 2 hr 41 min  
Range with external load 396.3km  
Range without external load 494.5km  
Approved fuels Jet B/JP-4 Jet B/JP-4
specifications

Applications

Firefighting

From the US to Europe to Asia to Australia, the K-MAX helicopter is a superb tool in the fight against forest fires due to its ability to carry a significant quantity of water to the fire in hot and high environments. Utilizing a Bambi Bucket® to carry water, the K-MAX can refill the bucket at smaller sources of water that are closer to the fire, thereby putting more water on a fire, quicker.

 

applications-kmax

Military and Defense

With a very successful deployment of the Unmanned K-MAX to Afghanistan with the US Marine Corps, this proven system is an asset to any force. Whether it’s taking supplies and equipment to forward locations, or bringing retrograde loads back to the main base, the Unmanned K-MAX can be a life saver by reducing the amount of ground convoys. And, the addition of additional sensor technologies make it a truly multi-purpose platform.

 

Logging

The K-MAX helicopter started its commercial life in 1994 as a logging helicopter, and it remains a cost effective means to transport logs from the forest to the log landing. Its payload, and performance at altitude, make it an ideal platform for this very demanding operating environment.

 

Power Line Construction

Power line projects are some of the most diverse and demanding projects for a helicopter. From carrying concrete for the foundations, erecting the towers, and finally stringing the power lines, all in austere environments, the rugged K-MAX helicopter is ideally suited for the tasks.

 

Distaster Relief

When there is a crisis and people need help, and transportation on the ground is impeded, the K-MAX helicopter is ready to deliver the equipment and supplies to those who are cut off from the rest of the population. With a payload of 6,000 pounds at sea level, the K-MAX can quickly and accurately deliver supplies to those most in need.

Ski Lift

Similar to power line projects in complexity – moving concrete for the foundations, erecting the towers, and finally stringing the lines – and doing all of this at higher altitudes, the intermeshing rotors of the K-MAX helicopter provide the necessary lift.

 

Search and Rescue

When someone is lost, time is of the essence. With two FAA-approved external seats mounted to the sides of the helicopter, the K-MAX can be called on in an emergency to transport someone to safety.

 

Search and Rescue

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