Gradient Avax

{|{{Infobox Aircraft Begin
| name=Avax
| image=File:GradientAvaxXC.jpg
| caption=Avax XC
}}{{Infobox Aircraft Type
| type=[[Paraglider]]
| national origin=[[Czech Republic]]
| manufacturer=[[Gradient sro]]
| designer=
| first flight=
| introduced=
| retired=
| status=In production (2016)
| primary user=
| more users= <!--Limited to three in total; separate using <br /> -->
| produced=
| program cost= <!--Total program cost-->
| unit cost= [[Euro|€]]2,884 (Avax RSE 26, 2004)
| developed from=
| variants with their own articles=
}}
|}
The '''Gradient Avax''' is a [[Czech Republic|Czech]] single-place, [[paraglider]] designed and produced by [[Gradient sro]] of [[Prague]]. Introduced in the early 2000s, it remained in production in 2016 as the Avax XC5.<ref name="WDLA04">Bertrand, Noel; Rene Coulon; et al: ''World Directory of Leisure Aviation 2003-04'', page 19. Pagefast Ltd, Lancaster OK, 2003. ISSN 1368-485X</ref>

==Design and development==
The Avax was designed as a competition glider.<ref name="WDLA04" />

The design has progressed through five generations of models, the Avax, Avax 2, 3, 4 and 5, each improving on the last. The models are each named for their approximate wing area in square metres.<ref name="WDLA04"/>

The Avax XC5 employs a unit cell structure that uses a combination of two non-carrying ribs with double diagonal segmented ribs attached to the wing's top surface. The wing [[trailing edge]] employs mini-ribs to maintain a smooth profile.<ref>{{cite web|url = http://www.gradient.cx/en/AvaxXC5|title = Avax XC5|accessdate = 29 May 2016|author = [[Gradient sro]]|date = }}</ref>
<!-- ==Operational history== -->

==Variants==
;Avax RSE 24
:Small-sized model for lighter pilots. Its {{convert|11.97|m|ft|1|abbr=on}} span wing has a wing area of {{convert|22.62|m2|sqft|abbr=on}}, 73 cells and the [[Aspect ratio (aeronautics)|aspect ratio]] is 6.38:1. The pilot weight range is {{convert|70|to|85|kg|lb|0|abbr=on}}.<ref name="WDLA04"/>
;Avax RSE 26
:Mid-sized model for medium-weight pilots. Its {{convert|12.67|m|ft|1|abbr=on}} span wing has a wing area of {{convert|25.17|m2|sqft|abbr=on}}, 73 cells and the aspect ratio is 6.38:1. The pilot weight range is {{convert|85|to|105|kg|lb|0|abbr=on}}. The glider model is AFNOR Competition certified.<ref name="WDLA04"/>
;Avax RSE 28
:Large-sized model for heavier pilots. Its {{convert|13.20|m|ft|1|abbr=on}} span wing has a wing area of {{convert|27.31|m2|sqft|abbr=on}}, 73 cells and the aspect ratio is 6.38:1. The pilot weight range is {{convert|95|to|120|kg|lb|0|abbr=on}}.<ref name="WDLA04"/>
;Avax XC5 24
:Small-sized model for lighter pilots. Its {{convert|12.2|m|ft|1|abbr=on}} span wing has a wing area of {{convert|21.4|m2|sqft|abbr=on}}, 66 cells and the aspect ratio is 6.96:1. The takeoff weight range is {{convert|70|to|85|kg|lb|0|abbr=on}}. The glider model is EN/LTF-D certified.<ref name="Avax5">{{cite web|url = http://www.gradient.cx/en/AvaxXC5/tech|title = Avax XC5 Technical Data|accessdate = 29 May 2016|author = [[Gradient sro]]|date = }}</ref>
;Avax XC5 26
:Mid-sized model for medium-weight pilots. Its {{convert|12.79|m|ft|1|abbr=on}} span wing has a wing area of {{convert|23.5|m2|sqft|abbr=on}}, 66 cells and the aspect ratio is 6.96:1. The takeoff weight range is {{convert|82|to|97|kg|lb|0|abbr=on}}. The glider model is EN/LTF-D certified.<ref name="Avax5"/>
;Avax XC5 28
:Large-sized model for heavier pilots. Its {{convert|13.38|m|ft|1|abbr=on}} span wing has a wing area of {{convert|25.7|m2|sqft|abbr=on}}, 66 cells and the aspect ratio is 6.96:1. The takeoff weight range is {{convert|95|to|118|kg|lb|0|abbr=on}}. The glider model is EN/LTF-D certified.<ref name="Avax5"/>
<!-- ==Aircraft on display== -->

==Specifications (Avax RSE 26) ==
{{Aircraft specs
|ref=Bertrand<ref name="WDLA04" />
|prime units?=met<!-- imp or kts first for US aircraft, and UK aircraft pre-metrification, met(ric) first for all others. You MUST choose a format, or no specifications will show -->
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General characteristics
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|genhide=

|crew=one
|capacity=
|length m=
|length ft=
|length in=
|length note=
|span m=12.67
|span ft=
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|height m=
|height ft=
|height in=
|height note=
|wing area sqm=25.17
|wing area sqft=
|wing area note=
|aspect ratio=6.38:1
|airfoil=
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|empty weight lb=
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|max speed kmh=60
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|glide ratio=<!-- at {{convert|XX|km/h|mph|0|abbr=on}} -->
|sink rate ms=1.0
|sink rate ftmin=
|sink rate note=<!-- at {{convert|XX|km/h|mph|0|abbr=on}} -->
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}}

==References==
{{reflist}}

==External links==
{{Commons category|Gradient Avax}}
*{{Official website|http://www.gradient.cx/en/AvaxXC5}}
{{Gradient aircraft}}
[[Category:Gradient aircraft|Avax]]
[[Category:Paragliders]]