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Waco S series
The Waco S Series is a family of American cabin biplanes produced by the Waco Aircraft Company starting in 1935.
Contents
Development and designations
The Waco closed cabin biplanes, initially known as the C (for Cabin) series were all unequal span, staggered single bay biplanes. They were fabric covered, the wings having a wooden structure and the control surfaces and fuselage constructed from metal frames. The wings were braced with outward splayed N form interplane struts plus a strut connecting the centre section rear spar to the bottom of the forward interplane strut, following Waco's standard practice. They had a fixed tailwheel undercarriage, which could be partially or completely faired. There was seating for 4/5 including the pilot. Most were powered by 7 cylinder radial engines of different makes.
When Waco released its slightly larger custom cabin series, those Cabin series aircraft it continued to produce were redesignated as 'Waco Standard Cabin series', with the final designation letter changing from C to C-S to S. For instance in 1935 the YKC became the YKC-S, then the YKS-6 in 1936. All three were indistinguishable from each other.[1][2] Waco used numeric suffixes like -7 to indicate a subvariant introduced in 1937 and so on.
From about 1937, all S series aircraft had wings of constant chord. Externally, the S series differed from the Custom or later C series in continuing with early C series features such as ailerons on both wings, linked by a prominent strut, and square edged rear side windows. Like many Waco aircraft, the S series were available with several different engines.
Operational history
The S series proved to be popular with both commercial and private pilots and over 50 were still airworthy in 2001, including examples of the CPTP VKS-7F version. During the Second World War several S series aircraft were impressed by the USAAF as the UC-72K.[3]
Variants
(per Simpson, 2001, p. 575 and Green, 1965, p.307)
- UKS-6, UKS-7
- Template:Convert Continental W-670-K
- VKS-7 and VKS-7F
- Template:Convert Continental W-670-M The -7F model was used in the CPTP program, F indicating that flaps were fitted.
- YKS-6, YKS-7
- Template:Convert Jacobs L-4
- ZKS-6, ZKS-7
- Template:Convert Jacobs L-5
Specifications (VKS-7F)
References
Notes
- ↑ Brandley. 1981
- ↑ http://aerofiles.com/wacodata.html Aerofiles 'That Waco Coding System'
- ↑ Simpson, 2001, p. 575
Bibliography
- Green, William (1965). The Aircraft of The World. Macdonald & Co. (Publishers) Ltd.
- Grey, C.G. (1972). Jane's All the World's Aircraft 1938. David & Charles (Publishers) Ltd.
- Simpson (2001). Airlife's World Aircraft. Airlife Publishing Ltd. ISBN 1-84037-115-3.
- Brandley (1981). Waco Airplanes Ask Any Pilot - The Versatile Cabin Series. R.H. Brandly. ISBN 0-9602734-2-5.
External links
Technical and model data on Waco aircraft
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| This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Waco S series". |
