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.
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.
Weights and Measurements
Lift Performance — ISA +15°C (59°F)
Hover Performance — 4,000 feet, 35°C (95°F)
|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|
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.
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.
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.
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.
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.