Electrostatic charging of the NH90 helicopter

Hannu Salmela (Corresponding Author), Tapio Kalliohaka, Matti Lehtimäki, M. Harkoma

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

This article discusses electrostatic charging of the NH90 medium transport/utility helicopter and assesses the safety of transported products against electrostatic discharges originated from the helicopter. Key questions were to determine charging characteristics of the composite material body NH90 compared to metal body helicopters as well as the charging levels in typical operating situations and climate conditions in Northern Europe. Most attention was paid to a situation where a load was winched to ground from a levitating helicopter at 40–80 feet altitudes. The measurements were supported with a simplified numeric simulation model and calculations of the charging of the helicopter.

According to the study, there is no significant difference in electrostatic charging characteristics between composite body NH90 helicopter and metal body helicopters. The tight grounding net of the NH90 helicopter enables the charge currents to discharge in the same manner as in metal body helicopters. In all measured situations, the electrostatic charging of the NH90 or a person moving inside the helicopter is under the transport requirements depicted in the standard STANAG 4235.
Original languageEnglish
Pages (from-to)368-372
Number of pages5
JournalJournal of Electrostatics
Volume71
Issue number3
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed
Event12th International Conference on Electrostatics - Budapest, Hungary
Duration: 17 Apr 201319 Apr 2013

Fingerprint

helicopters
Aircraft
Static Electricity
Helicopters
charging
Electrostatics
electrostatics
Metals
metals
Electrostatic discharge
composite materials
Composite materials
Electric grounding
Climate
climate
safety
Safety
requirements

Keywords

  • electrostatic charging
  • ESD
  • helicopter
  • NH90

Cite this

Salmela, Hannu ; Kalliohaka, Tapio ; Lehtimäki, Matti ; Harkoma, M. / Electrostatic charging of the NH90 helicopter. In: Journal of Electrostatics. 2013 ; Vol. 71, No. 3. pp. 368-372.
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Salmela, H, Kalliohaka, T, Lehtimäki, M & Harkoma, M 2013, 'Electrostatic charging of the NH90 helicopter', Journal of Electrostatics, vol. 71, no. 3, pp. 368-372. https://doi.org/10.1016/j.elstat.2012.12.036

Electrostatic charging of the NH90 helicopter. / Salmela, Hannu (Corresponding Author); Kalliohaka, Tapio; Lehtimäki, Matti; Harkoma, M.

In: Journal of Electrostatics, Vol. 71, No. 3, 2013, p. 368-372.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Electrostatic charging of the NH90 helicopter

AU - Salmela, Hannu

AU - Kalliohaka, Tapio

AU - Lehtimäki, Matti

AU - Harkoma, M.

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N2 - This article discusses electrostatic charging of the NH90 medium transport/utility helicopter and assesses the safety of transported products against electrostatic discharges originated from the helicopter. Key questions were to determine charging characteristics of the composite material body NH90 compared to metal body helicopters as well as the charging levels in typical operating situations and climate conditions in Northern Europe. Most attention was paid to a situation where a load was winched to ground from a levitating helicopter at 40–80 feet altitudes. The measurements were supported with a simplified numeric simulation model and calculations of the charging of the helicopter.According to the study, there is no significant difference in electrostatic charging characteristics between composite body NH90 helicopter and metal body helicopters. The tight grounding net of the NH90 helicopter enables the charge currents to discharge in the same manner as in metal body helicopters. In all measured situations, the electrostatic charging of the NH90 or a person moving inside the helicopter is under the transport requirements depicted in the standard STANAG 4235.

AB - This article discusses electrostatic charging of the NH90 medium transport/utility helicopter and assesses the safety of transported products against electrostatic discharges originated from the helicopter. Key questions were to determine charging characteristics of the composite material body NH90 compared to metal body helicopters as well as the charging levels in typical operating situations and climate conditions in Northern Europe. Most attention was paid to a situation where a load was winched to ground from a levitating helicopter at 40–80 feet altitudes. The measurements were supported with a simplified numeric simulation model and calculations of the charging of the helicopter.According to the study, there is no significant difference in electrostatic charging characteristics between composite body NH90 helicopter and metal body helicopters. The tight grounding net of the NH90 helicopter enables the charge currents to discharge in the same manner as in metal body helicopters. In all measured situations, the electrostatic charging of the NH90 or a person moving inside the helicopter is under the transport requirements depicted in the standard STANAG 4235.

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KW - helicopter

KW - NH90

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