Building Oil Shear Clutches & Brakes
since 1969
Call Today 800-829-3244

Force Control Industries, Inc.
3660 Dixie Highway
Fairfield, Ohio 45014 USA
Phone 513-868-0900 | Fax 513-868-2105

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What is New From Force Control

Watch for New Products, Trade Shows and Events, and Testimonials

Force Control Industries continues to offer new products, or does new applications. This page will keep you up to date with what is happening. Learn about new applications, success stories, and trade shows we are attending..

Current Press Release

Helicopter transmission overhaul

Oil shear technology ensures helicopter transmission test stands operate continuously, without adjustment, while achieving precise positioning for desired percentages of load.
Elizabeth Engler Modic (Edited by)

Professional Aircraft Accessories (PAA) in Titusville, Florida, specializes in the repair and overhaul of landing gear, accessories, instrumentation, pressurization, radio, radar avionics, and airframe components. Already well entrenched in fixed-wing aircraft, expanding into the helicopter market was a natural extension, and the request for quote (RFQ) for overhaul and recertification of OH-58 Kiowa helicopter transmissions provided a perfect opportunity. 

There was only one caveat: a very condensed timeframe. PAA officials found that oil shear braking technology helped them meet the technical requirements of the project and the fast response needed for initial certification testing.

Short-fused project takes off

While the system was designed for vertical operation the brake was mounted horizontally to allow direct torque measurement.

With the RFQ approved, PAA officials had four months to design and build a dynamometer test stand and overhaul three transmissions to get their project verification audit from the Army. Given the short timeframe, the project engineering team opted to use non-regenerative technology. Jerry Leach, director of production engineering and planning, led the team designing the system.

“Designing a system to do what we wanted with regenerative technology would have been more efficient, but it would have taken 4x longer and cost at least twice as much,” Leach says. “We contracted out key components of a system we could build in-house and decided to dump power into the system and then load it via braking. This is very effective, but it builds up a lot of heat which must be exhausted.”

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