Schneider Grunau Baby

Grunau Baby
Grunau Baby III
Role	Sailplane
Manufacturer	Schneider, Slingsby, Elliotts of Newbury, Nord, NV Vliegtuigbouw, Laminação Nacional de Metais, (later Companhia Aeronáutica Paulista, Brazil)
Designer	Edmund Schneider
Number built	ca. 6000

The Schneider Grunau Baby (named for the town where Schneider's factory was located - now Jeżów Sudecki in Poland) was a single-seat sailplane first built in Germany in 1931, with some 6,000 examples constructed in some 20 countries. It was relatively easy to build from plans, it flew well, and the aircraft was strong enough to handle mild aerobatics and the occasional hard landing. When the Baby first appeared, it was accepted wisdom that the pilot should feel as much unimpeded airflow as possible, the better to sense rising and falling currents of air, temperature changes and the like.

It was designed by Edmund Schneider as a smaller version of his ESG 31 of the previous year, incorporating a new elliptical wing design based on work done by Akaflieg Darmstadt. The intention was to create an aircraft suitable both for training and for cross-country soaring. Typical for its day, it was a high-wing braced monoplane with a fuselage of hexagonal cross-section and an open cockpit. The Baby was an instant success, and was enthusiastically promoted by gliding champion Wolf Hirth. An extensive redesign followed in 1932 following the fatal crash of an unrelated Schneider design, resulting in the Baby II. This version and the definitive Baby IIb that followed it were adopted as a standard sailplane trainer for the German Air Sports Association (later the National Socialist Flyers Corps).

During 1941, 30 GB gliders were built by Laminação Nacional de Metais, later Companhia Aeronáutica Paulista in Brazil, under the name "Alcatraz". Following World War II, the Baby was built in France (as the Nord 1300) and the United Kingdom (as the Elliotts Baby EoN and the Slingsby T5 - Slingsby also used it as the basis for a number of their own designs). Edmund Schneider emigrated to Australia, where he developed the Baby design into his Baby 3 and Baby 4, which had enclosed cockpits.

Variants

ESG 31

The precursor to the Baby with larger less sophisticated wings.

Baby

The initial version - an ESG31 with an improved wing based on work done by Akaflieg Darmstadt.

Baby II

Baby IIa

Baby IIb

Baby III

Alcatraz

Thirty aircraft licence built in Brazil by Laminação Nacional de Metais, later called CAP Companhia Aeronáutica Paulista

Nord 1300

License production in France by Nord Aviation

Elliotts Baby EoN

License production in England by Elliotts of Newbury

Slingsby T5

License production in England by Slingsby Sailplanes

Baby 3

Post-war redesign, with an anclosed cockpit, by Edmund Schneider after emigration to Australia

Baby 4

Further improvements made for production in Australia.

AB Flygplan Se-102

License production in Sweden for the Royal Swedish Air Force.

Specifications (Baby IIb)

General characteristics

• Crew: One pilot
• Length: 6.10 m (20 ft 0 in)
• Wingspan: 13.56 m (44 ft 6 in)
• Wing area: 14.2 m² (153 ft²)
• Aspect ratio: 13
• Empty weight: 170 kg (375 lb)
• Gross weight: 250 kg (550 lb)

Performance

• Maximum speed: 150 km/h (93 mph)
• Maximum glide ratio: 17
• Rate of sink: 0.91 m/s (180 ft/min)

References

• Hardy, Michael (1982). Gliders and Sailplanes of the World. Shepperton: Ian Allan. pp. 50–51. 
• Coates, Andrew (1978). Jane's World Sailplanes and Motor Gliders. London: MacDonald and Jane's. pp. 97. 

See also

• Schneider Kookaburra
• Schneider Arrow
• Schneider Boomerang
• Schneider Platypus