Open AccessLIGHTNING PROTECTION COATINGS OF AIRCRAFT ENGINES POLYMER COMPOSITE NACELLES. PART 1. ANALYSIS OF THE EXISTING TYPES OF LIGHTNING PROTECTION
Author(s) -
Nickolai Sazhenkov,
AUTHOR_ID,
Aleksei Sazhenkov,
AUTHOR_ID
Publication year - 2021
Publication title -
vestnik permskogo nacionalʹnogo issledovatelʹskogo politehničeskogo universiteta. aèrokosmičeskaâ tehnika
Language(s) - English
Resource type - Journals
eISSN - 2304-6457
pISSN - 2224-9982
DOI - 10.15593/2224-9982/2021.67.05
Subject(s) - nacelle , lightning strike , lightning (connector) , materials science , composite number , composite material , aerospace engineering , engineering , electrical engineering , lightning arrester , turbine , physics , power (physics) , quantum mechanics
The overview of the existing and upcoming types of aircraft engines polymeric composite nacelles lightning protection is presented. It is demonstrated that at present the most widely-used technologies of polymer composites lightning protection in the world and domestic aviation industry consist in using metal foils and meshes. However, the relative weight of the lightning protection comprised of metal foils and meshes (including adhesive and erosion layers) may result in a significant weight gain up to 0.7–0.9 kg per each square meter of the polymer composite nacelle surface. Additionally, the principal disadvantage of metal meshes is high percentage of the open area (80–90 %) leading to decreased engine EMI protection in the event of exposure to electromagnetic impulse from the lightning strike or L/HIRF. Currently, intensive scientific studies are performed in the field of aviation equipment lightning protection in different universities, institutes and companies, mainly in the USA, Europe, Russia and Japan. The potential lightning protection problem solution addressed by the large number of scientific papers is use of coatings made of heatproof polymer composites and polymer binders modified by carbon nanoparticles to develop a better material conductivity. However, this technology is characterized by high costs, low repairability, etc. Various spraying methods are studied. It has been found out that for the lightning protection of the advanced types of nacelles the highly competitive engineering solution is the one that ensures a cardinally low relative weight and high reliability, manufacturability, high EMI protection L/HIRF, low engine life cycle costs including easy in-service repair.