Addyman Zephyr: Difference between revisions

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The '''Addyman Zephyr''' was a one-off, single seat [[Glider (sailplane)|sailplane]] designed and built by Erik Addyman in the [[United Kingdom|UK]] for his own use in the 1930s.

The '''Addyman Zephyr''' was

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==Design==

Erik Addyman designed and built the single seat Zephyr, his first design, in 1933. It was intended as a light wind sailplane,<ref name=Horse/> combining a wing of modest aspect ratio with a nacelle cockpit and a open truss girder fuselage of the kind more common on [[primary glider]]s. It was a wooden structured, largely [[aircraft fabric covering|fabric]] covered aircraft.<ref name=Ellison/>

The two [[spar]] wing had a straight [[leading edge]] and constant [[chord]] out to a little over half span, where the trailing edges of the [[ailerons]], sethinged at a slight angle to the spar, curved inwards to the wingtips. It was braced form above with pairs of wires from the spars to a central, inverted V strut pylon and below by wires to the lower nacelle [[longerons]]. There were no [[flap (aircraft)|flaps]] or [[Air brake (aircraft)|airbrakes]]. The central wing rib was continued rearward with the the upper member of the open, flat, converging [[Warren girder]] fuselage, whose lower member joined the keel of the [[plywood]] and fabric covered nacelle just aft of the wing trailing edge. This placed the open single cockpit just forward of the wing leading edge. A central keel skid formed the main [[undercarriage]], with assistance from a tail bumper. A narrow span, triangular [[tailplane]], wire braced above and below, carried longer span [[elevator (aircraft)|elevators]] with rounded tips and a cut-out for the deep, rounded [[rudder]] hinged to small, triangular fin.<ref name=Ellison/>

The Zephyr flew for the first time in 1933.<ref name=Ellison/>

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==Operational history==

Only one Zephyr was built.<ref name=Ellison/> Based at [[Harrogate]],<ref name=Ellis22/><ref name=Zephyr/> where Addyman was Honorary Secretary of the Aircraft Club, it was often launched with a tow from a horse.<ref name=Horse/> It flown by him from many fields in central and north-western [[England]] up to the early part of [[World War II]];<ref name=Ellison/> from 1940 there was a government ban on recreational glider flying. The Zephyr seems not to have flown again,<ref name=Ellison/> though substantial parts of it still (2010) exist in store.<ref name=Ellis22/>

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==Specifications==

{{Aircraft specs

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