The Operating Environment and Aircraft Performance: Blog Discussion 2.3

 There are many factors and elements that can influence an aircrafts performance and flying safety. In this blog, I will be discussing one particular element; lightning.

    As there are many stages of a thunderstorm's life cycle, lightning can be the most dangerous of them all. A lightning strike to an aircraft while inflight is rather frequent in the U.S. The effects of lightning strikes can be very minimal no damage at all, or can be very destructive. They can puncture the skin of an aircraft and damage communications and electronic navigational equipment (PHAK, 2016). Without some of these controls or navigational instruments, the occurrence could be detrimental to the safety of the flight crew. Pilots need these controls to stay informed on how the aircraft is performing and the adjustments that may be needed. Not only can lightning hinder the structure of the aircraft, but it can also cause the pilot to experience blindness rendering them unable to navigate either by instrument or visual reference.

    Luckily, there are engineering processes and controls that help mitigate the effects lightning strikes have on an aircraft. During the construction phase of an aircraft, lightning protection is a very important topic to focus on. All of the principals of lightning protection remain the same while flying either a light aircraft or a large airliner. The sole purpose of the protection is to allow the lightning to spread across a large surface to lower the amps to a harmless level (PHAK, 2016). An aircrafts outer casing basically acts as a conductor to let the electricity pass through and into the air. Aluminum and copper meshes are bonded to the skin surface and are among the most popular used on fiberglass and carbon fiber.


References:

Pilot’s Handbook of Aeronautical Knowledge - Chapter 3: Aircraft Construction (PDF); https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/phak/media/05_phak_ch3.pdf

Pilot’s Handbook of Aeronautical Knowledge - Chapter 12: Weather Theory (PDF); https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/phak/media/14_phak_ch12.pdf

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