# Primary glider

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[[File:Fotothek df ld 0003142 001 Sport ^ Flugsport ^ Segelflug.jpg|thumb|upright=1.14|[DFS SG 38 Schulgleiter](/source/DFS_SG_38_Schulgleiter) primary glider]]

'''Primary [glider](/source/glider_aircraft)s''' are a category of [aircraft](/source/aircraft) that enjoyed worldwide popularity during the 1920s and 1930s as people strove for simple and inexpensive ways to learn to fly.<ref name="Schweizer">Schweizer, Paul A: ''Wings Like Eagles, The Story of Soaring in the United States'', pages 14-22. Smithsonian Institution Press, 1988. {{ISBN|0-87474-828-3}}</ref>

Constructed of [wood](/source/wood), [metal](/source/metal) cables and [cloth](/source/cloth), primary gliders were very light and easy to fly. They generally had no [cockpit](/source/Cockpit_(aviation)) and no instruments.<ref name="Schweizer"/>

==Operations==
Primary gliders were generally launched by [bungee cord](/source/bungee_cord), whereby a rubber rope was arranged in a "V" with the glider at the apex. The ends of the rope were pulled by hand to launch the glider from a slope. Primaries were also launched by [auto-tow](/source/auto-tow) and auto-bungee tow. Ramp launching from cliffs was also attempted successfully.<ref name="Schweizer"/>

==Modern primaries==
Modern versions of primary gliders are still built, but, while they are much like the originals in appearance, they are usually constructed with [composites](/source/composite_material) and safety enhancements.

==Types==
Examples include:
{{columns-list|colwidth=30em|
* [Bonomi BS.16 Allievo Bonomi](/source/Bonomi_BS.16_Allievo_Bonomi)
* [Cessna CG-2](/source/Cessna_CG-2)
* [Cloudcraft Dickson Primary](/source/Cloudcraft_Dickson_Primary)
* [Detroit G1 Gull](/source/Detroit_G1_Gull)
* [DFS SG 38 Schulgleiter](/source/DFS_SG_38_Schulgleiter)
* [Elliotts Primary EoN](/source/Elliotts_Primary_EoN)
* [Jongblood Primary](/source/Jongblood_Primary)
* [Manuel VI Primary](/source/Manuel_VI_Primary)
* [Payne I.C.1](/source/Payne_I.C.1)
* [Reynard R.4 Primary](/source/Reynard_R.4_Primary)
* [Sands Replica 1929 Primary Glider](/source/Sands_Replica_1929_Primary_Glider)
* [Schweizer SGP 1-1](/source/Schweizer_SGP_1-1)
* [Slingsby Grasshopper](/source/Slingsby_Grasshopper)
* [Slingsby Primary](/source/Slingsby_Primary)<ref>[http://www.sailplanedirectory.com/PlaneDetails.cfm?planeID=75 Description of RFD/Slingsby T3 Dagling] {{webarchive|url=https://web.archive.org/web/20110716135625/http://www.sailplanedirectory.com/PlaneDetails.cfm?planeID=75 |date=2011-07-16 }}</ref>
* [Šoštarić Vrabac](/source/%C5%A0o%C5%A1tari%C4%87_Vrabac)
* [Stamer Lippisch Zögling](/source/Stamer_Lippisch_Z%C3%B6gling)<ref>[http://www.luftfahrtmuseum.com/htmi/itf/slzgl.htm Description of the Zögling] {{webarchive|url=https://web.archive.org/web/20110605235323/http://www.luftfahrtmuseum.com/htmi/itf/slzgl.htm |date=2011-06-05 }}</ref>
* [Warsztaty Szybowcowe Wrona](/source/Warsztaty_Szybowcowe_Wrona)
}}

==References==
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Adapted from the Wikipedia article [Primary glider](https://en.wikipedia.org/wiki/Primary_glider) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Primary_glider?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.