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Aircraft Lighting Systems

Aircraft Lighting Systems

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Aircraft Lighting Systems

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  1. Aircraft Lighting Systems Group 5 Alex Simpson Mark Gabbard 19 September 2006

  2. Overview • Exterior Lighting • Interior Lighting • Emergency Lighting

  3. Exterior Lighting • Specifically regulated by FAR • Requires several systems for transport category aircraft • Landing lights (FAR 25.1383) • Position lights (FAR 25.1385-95) • Anti-collision lights (FAR 25.1401)

  4. Exterior Lighting Anti-collision lights Landing lights Position lights C-130 from www.af.mil

  5. Landing Lights • Light for night landing • On wing leading edge or landing gear • 28V DC or 115V AC • 600W • Taxi lights, 250W Boeing 757 from www.pbase.com/airlinerphotos /aviation_night

  6. Position Lights • Also called Navigation lights • Red on left wingtip • Green on right • White on tail • 28V DC or 115 V AC http://www.aopa.org/online_gallery/

  7. Anti-Collision Lights • Red or white flashing • 40-100 cycles per min • Must illuminate the vital areas • Red beacon on vertical tail • White strobes on wingtips • Strobes or beacons on top and bottom of fuselage

  8. Other exterior lights • Cargo loading lights • Wing icing detection lights (required) • Cannot cause glare or reflection that impairs crew (FAR 25.1403) C-17 from www.af.mil

  9. Interior Lighting • Cockpit lighting • Instrument lighting • Cabin lighting

  10. Cockpit Lighting • Instrument lighting • Must illuminate each essential instrument and switch • Direct rays must be shielded from pilot’s eyes • Must provide dimming control A340 cockpit from www.mmlane.com/flying/

  11. Cockpit Lighting • Interior lights to allow crew to perform other functions • Not regulated • Often red to preserve night vision 767 Cockpit from www.boeing.com

  12. Cabin Lights • Varies significantly by aircraft type and purpose • Usually overhead fluorescent lights • 28 volts DC 767 cabin from www.boeing.com

  13. Emergency Lighting • Required by FAR 25.812 • Must include exit marking signs, general cabin illumination, floor escape path lighting, and exterior emergency lighting • Must be battery powered and separate from main electrical system

  14. Conclusion • Exterior Lighting • Interior Lighting • Emergency Lighting

  15. References • Federal Aviation Regulations http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgFAR.nsf • Pallett, E. H. J. Aircraft Electrical Systems. Longman Scientific & Technical. 1987. • Eisman, T. K. et.al. Aircraft Electricity and Electronics. McGraw-Hill. 1989.

  16. QUESTIONS?