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QSTOL Aircraft

Published online by Cambridge University Press:  04 July 2016

J. D. Haley
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Extract

As an introduction to this paper, it would be worth defining a QSTOL aircraft, although it is not important that this be a rigid definition. The letters QSTOL stand for “Quiet Short Take-Off and Landing”, and may sometimes be abbreviated to STOL. A true STOL aircraft is capable of taking off and landing on a 2000 ft runway, this distance including the safety requirement to clear a 35 ft obstacle.

From the point of view of quietness, which is a subjective matter, dependent upon many factors, a quiet aircraft (according to one method of measurement) would produce a noise intensity no higher than 90 perceived noise decibels over an area of about 0·9 sq miles, of length 4 m, compared with an area of 16 sq m, length 14 m for such relatively quiet aircraft as TriStar and the DC-10, already in service (Fig. 1).

For the purposes of this paper, I shall call aircraft STOL if they can get in and out of runways up to 4000 ft long with a full payload, and any aircraft needing a longer distance will be conventional or CTOL aircraft.

Type
Research Article
Information
The Aeronautical Journal , Volume 79 , Issue 769 , January 1975 , pp. 34 - 37
Copyright
Copyright © Royal Aeronautical Society 1975 

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Footnotes

*

This paper won the N. E. Rowe Medal Competition for the under 21 years of age group. It was given to the Southampton Branch of the Society. Mr. Haley is in his final year at Southampton University.