Overview
IEC TR 62131-2:2011 is a technical report developed by the International Electrotechnical Commission (IEC) that examines the vibration and shock environments faced by electrotechnical equipment during transport in fixed wing jet aircraft. The purpose of this document is to review dynamic data from various studies and sources, enabling a standardized environmental description. This description is then compared against the framework set out in IEC 60721, which covers environmental classification for transportation.
By analyzing real-world measurement data, IEC TR 62131-2 provides valuable insights for manufacturers, logistics professionals, and engineers involved in the packaging, transport, and qualification of electrical and electronic equipment via jet aircraft.
Key Topics
- Vibration and Shock Data Collection: The report compiles a broad range of measured data from key transport aircraft such as the Lockheed Tristar KC Mk 1, BAe VC10 K, Boeing 747 Combi, and others.
- Data Quality and Consistency: Each data set is reviewed for measurement quality and consistency, according to guidelines in IEC/TR 62131-1.
- Aircraft and Cargo Hold Conditions: The study covers various flight phases (take-off, cruise, landing, turbulence) and measurement positions (center of gravity, forward cargo holds).
- Types of Vibration: The report differentiates between longitudinal, lateral, and vertical vibration, as well as shock encountered during specific phases like landing.
- Comparison to Standards: The compiled vibration and shock environments are compared to the reference conditions defined in IEC 60721-3-2:1997.
- Supplementary Information: Additional, non-verified data from sources such as military studies and legacy aircraft are included to broaden the understanding and aid in data validation.
Applications
IEC TR 62131-2:2011 is an essential resource for stakeholders in the electrotechnical industry, specifically when equipment is transported by fixed wing jet aircraft. Applications include:
- Product Qualification: Assisting designers in developing equipment and packaging that can withstand typical vibration and shock environments found in air transport.
- Logistics and Packaging: Informing logistics specialists and packaging engineers on transportation risk assessment, leading to more effective protective measures during shipment.
- Compliance Testing: Serving as a reference for laboratories and certification bodies carrying out environmental testing for air transport scenarios, using standardized test severities.
- Risk Mitigation: Supporting procurement and logistics managers in quantifying and mitigating risk related to airborne vibration and shock during global distribution.
- Design Optimization: Providing manufacturers with environmental baseline data to optimize product robustness for air freight.
Related Standards
- IEC 60721 Series: Especially IEC 60721-3-2:1997, which details classification of groups of environmental parameters and their severities for transportation.
- IEC 62131-1: Establishes measurement procedures and data categorization for environmental vibration and shock.
- Mil Std 810: A widely used US military standard for environmental engineering considerations and laboratory tests, offering comparable transport test severities.
- ASTM D 4728: Standard Test Method for Random Vibration Testing of Shipping Containers.
- AECTP 400: Allied Environmental Conditions and Test Procedures, focusing on military environments.
- Def Stan 00-35: UK Ministry of Defence standard specifying environmental conditions relevant to defence materiel.
Conclusion
IEC TR 62131-2:2011 equips the electrotechnical industry with a vetted reference for the environmental conditions encountered during air transport in fixed wing jet aircraft. By integrating measurement data, quality evaluation, and comparison with existing international standards in vibration and shock, this technical report supports the development, testing, and protection of sensitive equipment in global logistics chains. For organizations seeking to ensure compliance, minimize transport-related failures, and optimize their packaging solutions, adherence to the insights and methodologies provided by IEC TR 62131-2 is highly recommended.