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nacelle hold-open & rate control rods
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The
Problem
The nacelle was being designed for GE C34-10A engines destined for use aboard the
ARJ-21. The customer
required a nacelle hold-open/close system that met stringent weight, strength, rate-control
and durability standards.
The Solution & Benefits
Equipped with state-of-the-art engineering tools and in-house rapid prototyping
techniques, Hartwell based its approach on proven hold-open rod designs and an innovative
new solution to rate control. The resulting system is exceptionally durable and
lightweight — offering easy, smooth operation.
The aft hold-open thrust rod assembly was based on Hartwell’s existing design currently
in service on the C17
military transport aircraft engine nacelle. The assembly is constructed primarily
of nickel plated carbon steel and
has a proven field record. This hold open rod assembly is designed to maintain performance
under high
temperature conditions. The forward assembly is constructed of carbon composite
and aluminum and also has a
proven field record. This hold open rod assembly is designed to keep weight to a
minimum. The overall operation
of both hold open rods is smooth and reliable and offers the end-user clear operation
instructions.
The damping unit was developed specifically for the application. It uses the well
know principals of viscous shear
to provide the necessary damping loads and offers a very smooth and consistent damping
load. It also keeps
internal pressures to virtually zero allowing reliable sealing of fluid within the
device.
For More Information
For more information on this product and other examples of Solutioneering® at work,
contact Hartwell Corporation
at 1.714.993.4200. |
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