Accession Number:

ADA106279

Title:

A Directional Spotlight Baffle for Control Cabins,

Descriptive Note:

Corporate Author:

AERONAUTICAL RESEARCH LABS MELBOURNE (AUSTRALIA)

Personal Author(s):

Report Date:

1980-10-01

Pagination or Media Count:

42.0

Abstract:

Direct overhead lighting in control cabins frequently gives rise to unwanted bright images of the luminaires in the windows and these images may degrade the cabin operators view of the external world. Opaque louvres or shades and projector-type optical systems have commonly been used in attempts to overcome this difficulty with varying degrees of success. This report describes a directional baffle incorporating light traps which allow a high ratio of wanted to unwanted illumination from a specific conventional spotlamp. In practical tests, images from the spotlamp-baffle combination were practically inconspicuous both in day and night conditions. A general method of design is described for extension of the principle to other types of spotlamps. Author

Subject Categories:

  • Terminal Flight Facilities

Distribution Statement:

APPROVED FOR PUBLIC RELEASE