Last edited by Malarg
Tuesday, July 14, 2020 | History

1 edition of Investigation of electromagnetic field threat to fuel tank wiring of a transport aircraft found in the catalog.

Investigation of electromagnetic field threat to fuel tank wiring of a transport aircraft

Investigation of electromagnetic field threat to fuel tank wiring of a transport aircraft

  • 164 Want to read
  • 33 Currently reading

Published by National Aeronautics and Space Administration, Langley Research Center, Available from National Technical Information Service in Hampton, Va, Springfield, Va .
Written in English

    Subjects:
  • Airplanes -- Fuel tanks.,
  • Airplanes -- Wiring.,
  • Electromagnetic fields.

  • Edition Notes

    StatementJay J. Ely ... [et al.].
    SeriesNASA/TP -- 2000-209867, NASA technical paper -- 2000-209867.
    ContributionsEly, Jay J., Langley Research Center.
    The Physical Object
    Pagination 143, [59] p. :
    Number of Pages143
    ID Numbers
    Open LibraryOL18834107M

    The other one is static charges built up within the fuel tank by the shearing action of the incoming fuel column when adding fuel. In a large refueling operation, the column of fuel builds huge static charges within the mass of fuel itself, which result in static discharges within the fuel (there are films that show this; a freakin' light show).   The reason the LEDs pulse is to indicate that the RTR is continuously monitoring the static grounding circuit between the tank truck and the verified earth grounding point (e.g. loading rack) for the duration of the loading (unloading) process. If the resistance of the tank truck’s connection to the verified earth ground ever rises above 10 ohms, the RTR will go non .

    An antenna includes a first electrical conductor that is shaped to form a spiral between its first and second ends that remain electrically unconnected such that the first electrical conductor so-shaped is maintained as an unconnected single-component open-circuit having inductance and capacitance. In the presence of a time-varying electromagnetic field, the first electrical . The investigation concluded that a center fuel tank explosion destroyed the aircraft in flight. Since , 17 fuel tank ignition events have occurred and previous regulations did not prevent fuel tank explosions. • FAA and EASA harmonization: Since the mishap, numerous airworthiness directives have been published and.

      Without doing a very long post that goes way off thread, there are finally a lot of long overdue issues with wiring in tanks and aircraft wiring in general now being addressed. It will though be a while yet before we see the disappearance of in-tank fuel harnesses on new medium and large aircraft, and a lot longer before the last in-tank.   A flammable mixture of fuel vapor and air can exist at times in a partially filled aircraft fuel tank containing jet fuel or much less so Avgas. Research has been done to develop methods to eliminate or reduce the risk of having an explosive condition in the fuel tank. There are a few different approaches to preventing fuel tank explosions.


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Investigation of electromagnetic field threat to fuel tank wiring of a transport aircraft Download PDF EPUB FB2

Investigation of Electromagnetic Field Threat to Fuel Tank Wiring of a Transport Aircraft Article (PDF Available) March with Reads How we measure 'reads'. March NASA/TP Investigation of Electromagnetic Field Threat to Fuel Tank Wiring of a Transport Aircraft Jay J. Ely, Truong X.

Nguyen, Kenneth L. Dudley, Stephen A. Scearce, and Fred B. Beck. Investigation of Electromagnetic Field Threat to Fuel Tank Wiring of a Transport Aircraft.

This report compliments a concurrent analysis of the electromagnetic field threat to the fuel. Rf Coupling Into The Fuel Tank Of A Large Transport Aircraft From Intentionally Transmitting Peds In The Passenger Cabin Electromagnetic Field Threat to Fuel Tank Wiring.

Investigation of. A(f)= Electromagnetic emission threat power (HIRF or PED Source) B(f)= Coupling factor from source to fuel tank wiring (Path Factor) C(f)= Minimum RF Power required to cause ionization/heating event in fuel tank (Event Power) Each of these variables is dependent upon the frequency (f) of interest.

Essentially, B(f) is a. The fuel tank wiring and fuel probes from a Boeing were removed from a retired airplane and installed in the reverberation chamber. Investigation of Electromagnetic Field Threat to Fuel. The components inside fuel tanks, such as fuel pumps, fuel-quantity systems, and associated wiring and conduits, are also vulnerable to damage if they are struck or dislodged.

Finally, the containment properties of the fuel tank can be compromised if the sealant is damaged or dislodged or if fuel-tank bladders are penetrated. Electrical, Requirements Regarding Fuel Storage Regulatory Citation OSHA - 29 CFR (b) - Hazardous (classified) locations What It Is Standard addresses requirements for electric equipment and wiring in locations that are classified depending on the properties of.

Appendix A - Investigation of Electromagnetic Field Threat to Fuel Tank Wiring of a Transport Aircraft NASA/TP Appendix B - Some notes on sparks and ignition of fuels NASA/TM Group Chairman Factual Report Addendum - Electromagnetic Interference Appendix A - NAWCADPAX/TR/ The by-product of producing an ignition spark is the creation of waves of electromagnetic energy within the radio frequency spectrum (ab.

/ Al 10/ Dudley et al. Ely, Jay J. et al. "Investigation of Electromagnetic Field Threat to / Al 2/ Woodard Fuel Tank Wiring of a Transport Aircraft," Mar. NASA/TP, pp. OTHERPUBLICATIONS ETS Lindgren, Model Near-Field Probe Set User Manual,pp.

niques Using Magnetic Field Probes," IEEE International Symposium on Electromagnetic Compatibility, Aug.pp.Seattle Washington. Ely, Jay J. et at. "Investigation of Electromagnetic Field Threat to Fuel Tank Wiring of a Transport Aircraft," Mar.NASA/TP, pp.

The hull of a metal aircraft forms an effective electromagnetic boundary between the outside and the inside of an aircraft. Electromagnetic signals find it hard to get in, or to get out. That is why the navigation and radio antennae on an aircraft need to be placed outside the aircraft hull.

• Investigation of Electromagnetic Field Threat to Fuel Tank Wiring of a Transport Aircraft, MarchNASA/TP NASA Langley’s H.J.E. Reid Award,• Ultrawideband Electromagnetic Interference to Aircraft Radios, October NASA/TM • Investigation of RF Emissions from Wireless Networks as a Threat.

niques Using Magnetic Field Probes," IEEE International Symposium on Electromagnetic Compatibility, Aug., pp.Seattle Washington. Ely, Jay J. et al, "Investigation of Electromagnetic Field Threat to Fuel Tank Wiring of a Transport Aircraft," Mar.NASA/TP, pp.

Rf Coupling Into The Fuel Tank Of A Large Transport Aircraft From Intentionally Transmitting Peds In The Passenger Cabin Investigation of Electromagnetic Field Threat to Fuel Tank Wiring. outlets, metal fittings inside fuel tanks, fuel filler caps and access doors, drain plugs, tank skins, fuel transfer lines inside and outside of the tanks, electrical bonding jumpers between components in a tank, mechanical fasteners inside of tanks, and electrical and electronic fuel system components and wiring.

The FAA requirement on fuel tank ignition prevention states, “No ignition source may be present at each point in the fuel tank or fuel tank system where catastrophic failure could occur due to ignition of fuel or vapors.” For aircraft fuel tanks, this is a fairly clear requirement and the consequences of failing to do this are easily.

Fly-by-wire systems in aircraft, safety systems, and even passengers carrying tablets or phones, and there's more electronic interference around than there was just a. Stealth technology, also termed low observable technology (LO technology), is a sub-discipline of military tactics and passive and active electronic countermeasures, which covers a range of methods used to make personnel, aircraft, ships, submarines, missiles, satellites, and ground vehicles less visible (ideally invisible) to radar, infrared, sonar and other detection methods.

Auxiliary Tanks. Fuel tanks installed which make additional fuel available for increasing the flight range of that airplane.

The term “auxiliary” means that the tank is secondary to the airplane’s main fuel tanks; i.e., the functions of the main tanks are immediately available and operate without immediate supervision by the flightcrew in the.Abstract: NASA researchers were tasked to study the potential for radio signals to excite an aircraft fuel quantity indication system (FQIS) enough to cause arcing, sparking or excessive heating within a fuel tank.

Computational techniques were used to determine the threat from external high intensity radiated field transmitters nearby, such as shipboard and airborne .Investigation of Electromagnetic Field Threat to Fuel Tank Wiring of a Transport Aircraft, ().

Jiming Song, Weng Cho Chew, Cai-Cheng Lu, Solution of combined-field integral equation using multilevel fast multipole algorithm for scattering by homogeneous bodies, Antennas and Propagation.