Bell OH-58F Kiowa Warrior

The newly updated Kiowa Warrior aircraft, the OH-58F, made its first flight on 26 April 2013 at Redstone Arsenal, Ala. With new cockpit and sensor modifications installed, the OH-58F represents the first major upgrade or modernization to the Kiowa Warrior in 20 years.

OH-58F first flight 2013

Die Bell OH-58F startete am 26. April 2013 zum Erstflug (Foto: US Army).  


The "cockpit and sensor upgrade program," called CASUP, converts OH-58D Kiowa Warriors into OH-58F models. The CASUP program is "designed to address obsolescence in the aircraft as well as the capabilities of the sensor," said Col. Robert Grigsby, project manager, Armed Scout Helicopters.

Perhaps the biggest change to the aircraft is that the familiar sensor ball, which is mast-mounted above the rotor in older models, has been moved down to the front of the aircraft. The nose-mounted common sensor payload includes improved optics, an infra-red sensor, laser pointer and laser spot tracker.

Col. John Lynch, Training and Doctrine Command capability manager for the Kiowa Warrior, said mounting the sensor package on the nose of the aircraft was a decision made after considering operations over the last 12 years in Iraq and Afghanistan.

"We are really doing a lot more maneuvering flight both in urban and non-urban environments, and the sight quickly reaches the stop limits and it is very difficult to track targets when you are flying in an environment where you are getting much closer to the enemy than we ever envisioned with the mast-mounted sensor in the Cold War-era," Lynch said.

Lynch did say the aircraft will be "a little more exposed" by using the nose-mounted sight instead of the mast-mounted sight. But other factors in the battle space mitigate that exposure.

"[With] the linkages that are provided through communications, through manned-unmanned teaming in the current generation of aircraft as opposed to the original OH-58D in the late 1980s, and teaming with other aircraft such as the AH-64 Apache, we believe we will be able to overcome that risk and still perform the mission in major combat operation-type environment," Lynch said. "Based on what we've seen in the last ten years, we can certainly expect to be deployed in more environments like the current operating environment in Afghanistan, or recently, in Iraq."

The OH-58D Kiowa Warrior has the highest operational tempo of any Army aircraft in theater. On average, it maintains a monthly operational tempo of about 75 hours. Last year in theater, that number was more than 100 hours a month. The CASUP program, which converts the D model into F models, brings much capability to the well-used aircraft.

The OH-58F also includes a new digital cockpit that can be customized by the crew to display information relevant to the mission. Additionally, the OH-58F brings doubled processing speed to the aircraft, as well as improved recording and storage capability. Both the pilot and co-pilot will now have their own, separate map and data viewing capability.

The OH-58F is also about 160 pounds lighter than the D model of the aircraft, which means that commanders have more mission flexibility when using the aircraft.

"Understanding where the Kiowa Warrior operates today, which is trading both fuel and ammunition for every mission, I think this provides additional flexibility to the commander and crew," he said. A weight reduction on the aircraft means it can carry more fuel for increased flight time, or more rockets or ammunition. "I think flexibility is really the key thing it's going to provide."

The OH-58A model appeared in the Army in the late 1960s, during the Vietnam era. Some of the aircraft in the Army inventory today are more than 40 years old. But the CASUP doesn't "zero-time" the aircraft.

"About 60 percent of the airframe will be replaced," said Lt. Col. Matt Hannah, product manager, Kiowa Warrior. "But there's 40 percent that is literally still 42 years old today, and when you finish the production line, 55 years old."

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