Advance Bi Beta

{|{{Infobox Aircraft Begin
| name=Bi Beta
| image=File:Advance Bi Beta 4.jpg
| caption=Advance Bi Beta 4
}}{{Infobox Aircraft Type
| type=[[Paraglider]]
| national origin=[[Switzerland]]
| manufacturer=[[Advance Thun SA]]
| designer=
| first flight=
| introduced=
| retired=
| status=In production (BiBeta 5, 2016)
| primary user=
| more users= <!--Limited to three in total; separate using <br /> -->
| produced= <!--years in production-->
| number built=
| program cost= <!--Total program cost-->
| unit cost= [[Pound sterling|£]]2,297 (Bi Beta 2/3, 2004)
| developed from=
| variants with their own articles=
}}
|}
The '''Advance Bi Beta''' (sometimes written as '''BiBeta''') is a [[Switzerland|Swiss]] two-place-in [[tandem]] [[paraglider]], designed and produced by [[Advance Thun]] of [[Thun]].<ref name="WDLA04">Bertrand, Noel; Rene Coulon; et al: ''World Directory of Leisure Aviation 2003-04'', page 10. Pagefast Ltd, Lancaster OK, 2003. ISSN 1368-485X</ref>

==Design and development==
The Beta was designed as a two-pace [[flight training]] glider for introducing new student pilots to the sport.<ref name="WDLA04" />

The Beta has undergone continuous development, starting with the original Beta, through the Beta 2, 3, 4 and 5 models.<ref name="WDLA04" />
<!-- ==Operational history== -->

==Variants==
;Bi Beta
:[[Tandem]] two place glider, initial model.
;Bi Beta 2/3
:Tandem two place glider sold in the mid-2000s period.<ref name="WDLA04"/>
;Bi Beta 4
:Tandem two place glider sold in the late-2000s period.
;BiBeta 5
:Tandem two place glider sold in the mid-2010s period. Its wing has an area of {{convert|40.81|m2|sqft|abbr=on}} and an aspect ratio of 5.2:1. The pilot weight range is {{convert|120|to|225|kg|lb|0|abbr=on}}.<ref name="advance.ch">{{cite web|url=http://www.advance.ch/en/products/paragliders/bibeta-5/|title=BiBeta 5|author=[[Advance Thun SA]] |work=advance.ch|accessdate=11 March 2016}}</ref>
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==Specifications (BiBeta 5) ==
{{Aircraft specs
|ref=Manufacturer<ref name="advance.ch"/>
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General characteristics
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|crew=one
|capacity=one passenger
|length m=
|length ft=
|length in=
|length note=
|span m=
|span ft=
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|height m=
|height ft=
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|wing area sqm=40.81
|wing area sqft=
|wing area note=
|aspect ratio=5.2:1
|airfoil=
|empty weight kg=8.5
|empty weight lb=
|empty weight note=
|gross weight kg=225
|gross weight lb=
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|max speed kmh=47
|max speed mph=
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|cruise speed kmh=41
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|cruise speed note=trim speed
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|never exceed speed kmh=
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|roll rate=
|glide ratio=8.5:1<!-- at {{convert|XX|km/h|mph|0|abbr=on}} -->
|sink rate ms=1.2
|sink rate ftmin=
|sink rate note=<!-- at {{convert|XX|km/h|mph|0|abbr=on}} -->
|lift to drag=
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==References==
{{reflist}}

==External links==
{{Commons category|Advance Bi Beta}}
*{{Official website|http://www.advance.ch/en/products/paragliders/bibeta-5/}}
{{Advance aircraft}}

[[Category:Advance aircraft|Beta]]
[[Category:Paragliders]]