Analytical Modeling and Test Services for Lightning Phenomena Challenges in the Wind Turbine Systems and Structures

NTS’ Pittsfield, Massachusetts facility has long been involved in the wind power industry. Our participation in the IEC TC-88 PT 24 committee which is responsible for releasing the wind industry test standard IEC 61400-24 and the development of our analytical modeling capabilities enable our engineering department to provide the design evaluation and testing services your wind power products require.

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Lightning Testing

National Technical Systems

NTS is the world’s foremost authority in lightning testing. With the industry’s top thought leaders, you get to work side-by-side with experts who shape industry standards, sit on advisory boards, and author textbooks. Trusted by NASA and the FAA, NTS delivers best-in-class lightning testing at different locations throughout the United States.

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Simulation and Modeling Services for Lightning Protection

National Technical Systems

According to the best meteorological estimates, the surface of the earth is struck by lightning approximately 100 times each second, which averages out to about 8 million strikes per day. In addition, the Federal Aviation Administration reports that the average commercial aircraft gets hit by lightning on average about once for every 1,000 hours of flight it completes, which amounts to approximately once a year.With statistics like these, it’s obvious that providing adequate lightning protection to electrical components is crucial — whether that’s onboard an aircraft or as part of a ground-based facility. Fortunately, at NTS, we’ve been helping companies do just that for well over 50 years. Thanks to our lightning simulation and modeling services, companies are able to develop high-quality products that meet with their respective compliance regulations — from military and defense to Airbus and Boeing published standards.

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Aircraft Lightning Test Methods

EUROCAE ED-105 - National Technical Systems

The EUROCAE ED-105 is the Aircraft Lightning Test Methods published by the European Organization for Civil Aviation (EUROCAE). The document is one of a set covering the whole spectrum of aircraft interaction with lightning. Its intent is to describe how to conduct lightning direct effects tests and indirect effects tests

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Aircraft Lightning Environment and Related Test Waveforms

ARP5412B - National Technical Systems

The waveforms provided in the ARP5412 are considered to be adequate for the demonstration of compliance for the protection of an aircraft and its systems against the lightning environment and should be applied in accordance with the aircraft lightning strike zones (see ARP5414) and test methods (see ARP5416), and applicable FAA and EASA advisory and interpretive material.

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Facilities Protection

National Technical Systems

Airworthiness authorities require that aircraft be protected and certified against the effects of lightning, but few such regulations exist for sensitive facilities on the ground. If it is possible to protect an aircraft that is highly dependent on electronics from a direct lightning strike, it is certainly possible to protect important ground-based facilities. For this purpose, professionals must re-evaluate and update lightning protection methods for advanced facilities. NTS and Lightning Technologies have been in the forefront of this technology for more than 20 years.

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Direct Effects Lightning Testing

National Technical Systems

NTS provides lightning protection engineering, certification plan preparation and verification testing services to airframe and aerospace systems manufacturers around the world. With a lead role in major commercial and military design programs, our engineers take a system-wide approach to assuring that lightning protection is compatible with space and weight limitations, electromagnetic compatibility and electromagnetic pulse. Our experience includes traditional designs, all-composite and fly-by-wire aircraft, as well as avionic upgrades and engine modifications.

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Indirect Effects Lightning Testing

National Technical Systems

The indirect effects of lightning are caused primarily by earth-voltage rises that occur when the flash dumps charge into the earth and by the intense electromagnetic field associated with the flash. These fields and earth-voltage rises have enough energy to cause component damage up to a kilometer or more from the actual strike. Indirect effects are most commonly induced into system interconnecting cables and may damage or upset electronic components.

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