The Stits SA-2A Sky Baby is a

homebuilt aircraft Homebuilt aircraft, also known as amateur-built aircraft or kit planes, are constructed by persons for whom this is not a professional activity. These aircraft may be constructed from "scratch", from plans, or from assembly kits.Armstrong, Kenn ...

designed for the challenge of claiming the title of "The World's Smallest".

Design and development

The Sky Baby was designed by Ray Stits and built with Robert H. Starr as a follow-on to the Stits Junior midget racer. The aircraft is an enclosed single engine negative staggered cantilevered

biplane A biplane is a fixed-wing aircraft with two main wings stacked one above the other. The first powered, controlled aeroplane to fly, the Wright Flyer, used a biplane wing arrangement, as did many aircraft in the early years of aviation. While ...

with

conventional landing gear Conventional landing gear, or tailwheel-type landing gear, is an aircraft Landing gear, undercarriage consisting of two main wheels forward of the Center of gravity of an aircraft, center of gravity and a small wheel or skid to support the tail ...

. The

fuselage The fuselage (; from the French language, French ''fuselé'' "spindle-shaped") is an aircraft's main body section. It holds Aircrew, crew, passengers, or cargo. In single-engine aircraft, it will usually contain an Aircraft engine, engine as wel ...

is constructed of welded steel tubing with

aircraft fabric covering Aircraft fabric covering is a term used for both the material used and the process of covering aircraft open structures. It is also used for reinforcing closed plywood structures. The de Havilland Mosquito is an example of this technique, as are ...

. The upper wings have flaps, the lower wings have

aileron An aileron (French for "little wing" or "fin") is a hinged flight control surface usually forming part of the trailing edge of each wing of a fixed-wing aircraft. Ailerons are used in pairs to control the aircraft in roll (or movement aroun ...

s. Most aircraft use a flat firewall between the engine and pilot's feet, the Skybaby is configured with the pilot sitting with the engine close to the lap, and rudder pedals located under the oil sump toward the front of the cowling. The powerplant was sourced from an

ERCO Ercoupe The ERCO Ercoupe is an American low-wing monoplane aircraft that was first flown in 1937. It was originally manufactured by the Engineering and Research Corporation (ERCO) shortly before World War II; several other manufacturers continued its ...

, modified with water injection to produce .

Operational history

The aircraft was test flown by Robert H. Starr on 26 May 1952 at

Palm Springs, California Palm Springs (Cahuilla language, Cahuilla: ''Séc-he'') is a desert resort city in Riverside County, California, United States, within the Colorado Desert's Coachella Valley. The city covers approximately , making it the largest city in Rivers ...

. The short coupled aircraft was originally built with

tricycle landing gear Tricycle gear is a type of aircraft undercarriage, or ''landing gear'', that is arranged in a tricycle fashion. The tricycle arrangement has one or more nose wheels in a single front undercarriage and two or more main wheels slightly aft of th ...

, which was dropped in favor of the lighter tailwheel arrangement. The aircraft required a pilot to remain within the center of gravity and was only flown by pilots Robert H. Starr and Lester Cole that met the criteria. The landing procedure uses entry patterns, with on final approach, and touchdown speeds. The aircraft performed publicity flights to promote an airshow act. It was retired in October 1952 after 25 hours of flight time. The aircraft was eventually donated to the

National Air and Space Museum The National Air and Space Museum (NASM) of the Smithsonian Institution is a museum in Washington, D.C., in the United States, dedicated to history of aviation, human flight and space exploration. Established in 1946 as the National Air Museum, ...

for display. Ray Stits was a mechanic and

Second World War World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

fighter pilot, but claimed he was not an engineer. He went on to develop several home-built designs, including the Stits SA-3A Playboy, which would be the basis for the VanGrunsven RV-1 and thousands of

Van's Aircraft Van's Aircraft, Inc. is an American Homebuilt aircraft, kit aircraft manufacturer founded by Richard VanGrunsven in 1973. The Van's RV series aircraft are all-aluminum, low-wing monoplanes of monocoque construction. In 2023, over 11,000 Van's a ...

Aircraft on display

The Sky Baby was on display at the

EAA Airventure Museum The EAA Aviation Museum, formerly the EAA AirVenture Museum (or Air Adventure Museum), is a museum dedicated to the preservation and display of historic and experimental aircraft as well as antiques, classics, and warbirds. The museum is lo ...

Oshkosh, Wisconsin Oshkosh () is a city in Winnebago County, Wisconsin, United States, and its county seat. It is located on the western shore of Lake Winnebago and had a population of 66,816 as of the 2020 United States census, 2020 census, making it the List o ...

on loan from the

. In 2014, the Sky Baby was moved to the Steven F. Udvar-Hazy Center of the

, and placed on display there.

Specifications (SA-2A)

References

{{Stits aircraft Homebuilt aircraft Biplanes with negative stagger Single-engined tractor aircraft Aircraft first flown in 1952 1950s United States experimental aircraft SA-2A Aircraft with fixed conventional landing gear Single-engined piston aircraft

Design and development

Operational history

Aircraft on display

Specifications (SA-2A)

See also

References