Vancil Spitz S1
{{Short description|American homebuilt aircraft}}
{{Use mdy dates|date=January 2022}}
{{Use American English|date=January 2022}}
| {{Infobox aircraft begin
| name=Vancil Spitz S1 | image= | caption= }}{{Infobox aircraft type | type=Homebuilt aircraft | national origin=United States | manufacturer=A. Vancil | designer= | first flight= | introduced=late 1990s | retired= | status=Production completed | primary user= | more users= | produced= | number built=At least one | developed from= Pitts S-1 | variants with their own articles= }} |
The Vancil Spitz S1 is an American homebuilt aircraft that was designed and produced by A. Vancil of Belton, South Carolina, introduced in the late 1990s. When it was available the aircraft was supplied as a kit and also in the form of plans for amateur construction.Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition, page 361. BAI Communications, 15 July 1998. {{ISBN|0-9636409-4-1}}
Design and development
The Spitz S1 is an ultralight replica of the Pitts S-1 aerobatic biplane. It features a biplane layout, a single-seat open cockpit, fixed conventional landing gear and a single engine in tractor configuration.
The aircraft was designed to comply with the US FAR 103 Ultralight Vehicles rules, including the category's maximum empty weight of {{convert|254|lb|kg|0|abbr=on}}. The aircraft has a standard empty weight of {{convert|254|lb|kg|0|abbr=on}}. It can also be placed in the Experimental - Amateur-built category.
The Spitz S1 is made from metal tubing and wood, with its flying surfaces and tail covered in doped aircraft fabric and the fuselage covered in sheet aluminium. Its {{convert|18.27|ft|m|1|abbr=on}} span wing has a wing area of {{convert|116|sqft|m2|abbr=on}}. The standard engine used is the {{convert|48|hp|kW|0|abbr=on}} Christine Aero powerplant.
The aircraft has a typical empty weight of {{convert|254|lb|kg|abbr=on}} and a gross weight of {{convert|475|lb|kg|abbr=on}}, giving a useful load of {{convert|221|lb|kg|abbr=on}}. With full fuel of {{convert|5|u.s.gal}} the payload for the pilot and baggage is {{convert|191|lb|kg|abbr=on}}.
Variants
Specifications (version)
{{Aircraft specs
|prime units?=imp
|genhide=
|crew=one
|capacity=
|length m=
|length ft=15.23
|length in=
|length note=
|span m=
|span ft=18.27
|span in=
|span note=
|height m=
|height ft=
|height in=
|height note=
|wing area sqm=
|wing area sqft=116.0
|wing area note=
|aspect ratio=
|airfoil=
|empty weight kg=
|empty weight lb=254
|empty weight note=
|gross weight kg=
|gross weight lb=475
|gross weight note=
|fuel capacity={{convert|5|u.s.gal}}
|more general=
|eng1 number=1
|eng1 name=Christine Aero
|eng1 type=aircraft engine
|eng1 kw=
|eng1 hp=48
|prop blade number=2
|prop name=wooden, fixed pitch
|prop dia m=
|prop dia ft=
|prop dia in=
|prop note=
|perfhide=
|max speed kmh=
|max speed mph=90
|max speed kts=
|max speed note=
|cruise speed kmh=
|cruise speed mph=63
|cruise speed kts=
|cruise speed note=
|stall speed kmh=
|stall speed mph=25
|stall speed kts=
|stall speed note=
|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed speed note=
|range km=
|range miles=
|range nmi=
|range note=
|endurance=
|ceiling m=
|ceiling ft=
|ceiling note=
|g limits=
|roll rate=
|glide ratio=
|climb rate ms=
|climb rate ftmin=
|climb rate note=
|time to altitude=
|sink rate ms=
|sink rate ftmin=
|sink rate note=
|lift to drag=
|wing loading kg/m2=
|wing loading lb/sqft=4.08
|wing loading note=
|power/mass=
|thrust/weight=
|more performance=
|avionics=
}}