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Results for: high temperature

Arc Damage Modeling Tool

Summary of Arc Damage Modeling Tool Based on over 3,000 arc damage assessment tests, the Arc Damage Modeling Tool (ADMT) is the state-of-the-art for wire failure damage assessment The ADMT is capable of predicting the damage to both direct electrical arcing (direct contact) and indirect arcing (damage from the arc plume) Data generated can be […] Read more

Corrosion prevention compounds (CPCs) and aircraft EWIS

Michael Traskos
Corrosion prevention compounds (CPCs) are compounds that are placed on many aircraft components. Applied to a variety of mechanisms, these compounds have been found to increase structural life by reducing corrosion. While there are benefits to reducing corrosion, the impact of the CPCs on wire insulation and the aircraft Electrical Wire Interconnection System (EWIS) in […] Read more

EWIS failure and the MQ-1B Predator incident

Michael Traskos
On May 2013, a US Air Force MQ-1B General Atomics Predator aircraft crashed north of Creech Air Force Base in Nevada. The estimated loss was over $4.5 million. This is a good example of EWIS failure. Below are some of the key EWIS-related findings from the United States Air Force Abbreviated Accident Investigation Board Report. […] Read more

Heat shrink tubing application and aircraft EWIS components

Michael Traskos
Heat shrink tubing can be found in nearly every location on aircraft and can interact with aircraft EWIS components. These materials protect wire repairs, provide additional abrasion protection, and prevent the ingress of fluids (and in a pinch, may be used as a secondary harness support when other options are not viable). Although this product […] Read more

Life prediction of aircraft EWIS components

Michael Traskos
Aircraft vehicle reliability rests on well-designed components maintaining full functionality through the entire life cycle, or at the very least, maintaining full functionality until a predictable life limit is reached so that sustainment activities can be performed. Selection of wires and EWIS components is no different. The selection process starts with the functional requirements (electrical […] Read more

Aircraft circuit protection: A review of 5 technologies

Michael Traskos
Two weeks ago we posted a blog on the selection process for circuit protection/wire pairs. Today, we produce a grid to help you understand common aircraft circuit protection types that can be found on aircraft. The five device types talked about here are the thermal circuit protection, fuse, magnetic circuit protection, Arc Fault Circuit Breaker […] Read more

7 considerations for aircraft wire separation

Michael Traskos
The development of a safe, reliable, and easy to maintain Electrical Wire Interconnection System (EWIS) is a challenging task. The considerations range from selecting each EWIS component, to matching the load and Electromagnetic Interference (EMI) requirements of the connected devices, to ensuring your design can maintain performance across multiple zone environments. EWIS design takes a […] Read more

MIL-HDBK-525 EWIS overview: Task 3 — EWIS assessment

Carina Cannon
This is a series that will give you an EWIS overview.  This article is the fourth in the series devoted to reviewing the guidance provided in MIL-HDBK-525 for Electrical Wire Interconnection System (EWIS) Service Life Extension Programs (SLEPs). If you missed one, here are the links to be previous articles: MIL-HDBK-525 Overview MIL-HDBK-525 Overview – […] Read more

Building an aircraft electrical wire testing program: Selecting tests, Part I

Michael Traskos
This article, which focuses on test selection, is a continuation of a discussion on wire selection that was started in the Determining the Right Wire for your Application article. The series could be used as a basis for understanding electrical wire testing. A quick scan of the wire tests on WireFacts.com demonstrates that there are […] Read more

Lectromec Harness Derating Tool (HDT) tutorial for EWIS

Michael Traskos
As mentioned on the WireFacts blog, the Lectromec Harness Derating Tool (HDT) is now up and running. The HDT is designed to follow the guidance provided in AS50881 on how much electrical current should be in the wires for a given harness. If the guidance is not followed, the electrical current in a harness will […] Read more