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Electrostatic charging of an aircraft due to airborne dust particles impacts

  • Theodore I. LekasEmail author
Original Paper
  • 10 Downloads

Abstract

An approach for computing the electrostatic charging of an aircraft flying in a soil dust cloud is discussed. This approach combines a semi-empirical equation obtained by flight test data, atmospheric dust particle concentrations obtained either by numerical weather forecasting models or in situ measurements, a vortex lattice-based aerodynamic simulation model, and the aerodynamic and inertial characteristics of soil dust particles. Application of the proposed approach showed that the aircraft acquires an equilibrium electrostatic charge in a matter of seconds. This means that the electrostatic charging of the aircraft due to soil dust is as important as any other source of electrostatic charging.

Keywords

Dust Particles Aircraft Electrostatic Charging 

List of symbols

C

Dust particle concentration (µg/m3)

CD

Dust particle drag coefficient

D

Dust particle diameter (µm)

\(\dot {m}\)

Dust mass rate impacted on a given surface (µg/s)

mP

Dust particle mass (µg)

Q

Electrostatic charge per kg of impacted dust mass on a given surface (µC/kg)

\(\dot {Q}\)

Electrostatic charging rate of a given surface (µC/s)

QTOTAL

Total electrostatic charge acquired by a given surface (C)

S

Surface or reference area (m2)

Va

Local air flow velocity (m/s)

VP

Local dust particle velocity (m/s)

V

Flight speed (m/s)

W

Particle weight (N)

ρA

Air density (kg/m3)

Subscripts

IN

Initial plane

TAR

Target plane

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Copyright information

© Deutsches Zentrum für Luft- und Raumfahrt e.V. 2018

Authors and Affiliations

  1. 1.Department of Aerodynamics and Flight MechanicsHellenic Air Force Academy, Dekelia AFBDekeliaGreece

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