Abstract
AT the meeting of the Illuminating Engineering Society on January 31, Lt.-Col. L. F. Blandy, who is associated with the Air Ministry, delivered a paper on “The Use of Light as an Aid to Aerial Navigation.” Gen. Sir Frederick Sykes, Controller-General of Civil Aviation, presided. In the introductory portion of the paper the author described the lighting of the passengers' accommodation and crew's quarters, etc., on a modern airship, the light being derived from electric lamps fed from a generator driven by the engine. Small candle-power lamps are used for illuminating the dials of instruments, etc., on some machines. The external lighting of aircraft has been closely studied by the International Air Convention, which has defined precisely the equipment of a forward white light of 8-km. range, a red light of at least 5-km. range on the left hand, and a green light of similar range on the right. Special arrangements must be made to prevent the green light being seen from the left side or the red light from the right. A white rear light is also provided.
Article PDF
Rights and permissions
About this article
Cite this article
The Use of Light as an Aid to Aerial Navigation. Nature 109, 286–287 (1922). https://doi.org/10.1038/109286a0
Issue Date:
DOI: https://doi.org/10.1038/109286a0