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Advanced Engineering 2020

NEC, Birmingham(B40 1NT)

04/11/2020 - 05/11/2020

The UK's largest annual advanced manufacturing trade show, Advanced Engineering is your opportunity to (more)

Drives & Controls Exhibition

NEC, Birmingham(B40 1NT)

25/01/2021 - 27/01/2021

The show brings together key suppliers of state-of-the-art equipment representing the multi-tasking culture (more)

Ballscrews take to the sky

A new ballscrew made by Steinmeyer has been specified for the horizontal stabilizer trim actuator of a new regional jet to be officially launched at the Paris Air Show in June. The horizontal trim actuator has been developed and produced by Liebherr-Aerospace Lindenberg in Germany, responsible for the complete fly-by-Wire flight control system of the new regional jet. The Sukhoi SuperJet 100, produced by Russian aerospace firm Sukhoi Civil Aircraft Company, is a modern, fly-by-wire regional jet in the 75- to 95-seat category. It is still undergoing flight tests and the first commercial deliveries are expected later this year.

The ability to withstand stress is an important factor in the design of flight critical components. All structural parts need to be tested under maximum stress levels. For that purpose design engineers at Steinmeyer simulated different load scenarios. An example is the 'runaway' check. During a 'runaway' a malfunction of an electronic or electrical part causes the actuator to run against its end stop at full speed and full motor torque. Another scenario could be a gearbox jamming leaving all parts locked under inertia.

The components of the actuator have to withstand these load conditions without causing the actuator to fail. Should for whatever reason the actuator sustain damage during flight, or should wear to the mechanical parts exceed certain limits, a sensor triggers an alarm. The part can then be identified and replaced during an inspection, rather than operating the aircraft with the help of the backup system for any length of time.
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August Steinmeyer GmbH

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