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Measurement Testing
A Resource Dedicated to Environmental Testing, EMC Testing, Vibration Testing and related areas
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Mjr
Site Admin
Joined: 13 Jul 2005
Posts: 294
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 Posted: Tue Sep 27, 2005 5:59 pm Post subject: Lightning Testing |
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For Aerospace/Defense industries Indirect Lightning-Effects Testing is critical for aircraft safety and defense.
TUV America has created a comprehensive battery of tests to gauge the reliabilty and susceptibility of mission- and safety-critical electrical systems.
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During normal operation of commercial and/or military aircraft, an in-flight lightning strike to the fuselage may occur. Some aircraft lightning events are known as "single-stroke" in nature, meaning that the strike occurs once, for a short, almost instantaneous time period, with no re-strikes. Some aircraft lightning strikes include multiple "return strokes" or multiple "re-strikes." As the extreme electric current from the lightning strike flows through the aircraft, frequency resonances in the aircraft chassis and cable harnesses can cause transient, high currents and/or voltages of a "multiple-stroke" and/or "multiple-burst" nature to appear on the Avionics wiring.
To assist manufacturers in meeting necessary lightning requirements, TÜV America provides indirect lightning effects testing, which is especially critical in the Avionics and Military fields. In these critical areas, qualifying systems that may potentially be exposed to the indirect induced effects of a lightning strike must be tested to demonstrate the ability to function properly given adverse conditions.
TÜV America's Indirect Lightning Effects capabilities include:
* Testing in compliance with RTCA/DO-160E, Section 22
* Multiple burst / multiple stroke lightning per SAE ARP5412 and other standards
* Completely automated testing schemes
* State-of-the-art equipment at both our New Brighton, MN and San Diego, CA facilities
About RTCA/DO-160E
Change No. 3 to RTCA/DO-160D was issued December 5, 2002, revising Section 22 - Lightning Induced Transient Susceptibility. RTCA/DO-160E was issued December 9, 2004, and incorporates the changes made in Change No. 3. Lightning Induced Transient Susceptibility tests determine whether equipment can operate as specified during and/or after various lightning induced transient waveforms are injected into connector pins, interconnecting cables, and power leads. Section 22 includes multiple burst and multiple stroke tests for interconnecting cable bundles, using either cable induction or ground injection. |
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