Product category:
Plugs and Sockets
News Release from: Deutsch | Subject: Ultra Electronics
Edited by the Electronicstalk Editorial
Team on 11 April 2002
Circular helps Ultra keep cabins quiet
To incorporate its active noise and vibration control technology into commuter aircraft, Ultra Electronics needed a lightweight, compact, circular connector.
To incorporate its active noise and vibration control (ANVC) technology into commuter aircraft, Ultra Electronics needed a lightweight, compact, circular connector, and Deutsch industrial division's IMC connector was ideal for the task The dominant noise that passengers hear in an aircraft cabin results from vibrations being induced in the airframe by the engine or rotation of the propeller
This article was originally published on Electronicstalk on 4 Jul 2001 at 8.00am (UK)
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Ultra Electronics is a world leader in the application of ANVC technology for aircraft cabin quieting.
ANVC is the reduction of noise and vibration by the introduction of additional noise and vibration to cancel the original.
In the case of regional turboprop aircraft Ultra's UltraQuiet cabin cancels the propeller tones, creating an environment that is quieter than a modern regional jet.
Further reading
Military connectors to present arms
Visitors to the Deutsch stand at the 2001 Defence Systems and Equipment International Show will be able to see products covering the company's range of military and aerospace capabilities.
Sealed circulars withstand the environment
Deutsch has added to its Industrial Micro Connectors (IMC) range with an economical choice of robust inline and flange-mounted composite circular connectors.
Ultra's ANVC system uses a central computer to drive active tuned vibration attenuators (ATVAs) mounted to the fuselage in opposition to the propeller and engine induced vibrations in the aircraft structure.
The result is the dynamic freezing of the aircraft's fuselage, thus cancelling the source of the noise.
Working with Bombardier Aerospace, the world's third largest civil aircraft manufacturer, Ultra's system has revolutionised the cabin of the Dash-8 regional turboprop to the extent that the aircraft has been rebranded the Q Series (representing 'quiet').
The Bombardier Q400, an 84-seat regional turboprop, has just entered service with Scandinavian Airlines System (SAS).
The ANVC system on this aircraft comprises 80 ATVAs each with a dedicated power amplifier.
Interconnections are made with the Deutsch circular Industrial Micro Connector (IMC).
"The Deutsch IMC connector", says Laurence Earl, Ultra's Marketing Manager, "was selected by us on the basis of cost-effectiveness, ease of assembly and sealing ability".
The IMC 5- and 7-way connector being used is made from high temperature resistant, UL approved composite material and meets or exceeds UL94 Class V0 flammability requirements.
Sealed to IP67, the connector offers a current rating up to 13A, voltage rating from 750 to 1000V AC (RMS) and insulation resistance of 1Gohm.
The result is a rugged and chemical resistant electrical connector which enables it to withstand the rigours of industrial environments where heat, dust, moisture and chemicals are prevalent.
For the Q400 installation, Ultra worked with Deutsch to design a bespoke connector boot that complied with the very stringent airworthiness flame retardant requirements.
"System reliability is paramount to us", says Laurence Earl, "and with the Deutch IMC we have a connector solution that is robust and incorporates lightweight qualities that are essential in the aerospace industry".
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