Dynamic Sport Gravis
{|{{Infobox Aircraft Begin
| name= Gravis
| image=
| caption=
}}{{Infobox Aircraft Type
| type=[[Paraglider]]
| national origin=[[Poland]]
| manufacturer=[[Dynamic Sport]]
| designer=Wojtek Pierzyński
| first flight=
| introduced=
| retired=
| status=Production completed
| primary user=
| more users= <!--Limited to three in total; separate using <br /> -->
| produced= mid-2000s
| number built=
| program cost= <!--Total program cost-->
| unit cost=[[Euro|€]]863 (Gravis L, 2004)
| developed from=
| variants with their own articles=
}}
|}
The '''Dynamic Sport Gravis''' is a [[Poland|Polish]] single-place, [[paraglider]] that was designed by Wojtek Pierzyński and produced by [[Dynamic Sport]] of [[Kielce]]. It is now out of production.<ref name="WDLA04">Bertrand, Noel; Rene Coulon; et al: ''World Directory of Leisure Aviation 2003-04'', page 15. Pagefast Ltd, Lancaster OK, 2003. ISSN 1368-485X</ref>
==Design and development==
The Gravis was designed as a beginner glider. The models are each named for their relative size.<ref name="WDLA04"/>
==Operational history==
Reviewer Noel Bertrand described the Gravis in a 2003 review as priced very competitively.<ref name="WDLA04"/>
==Variants==
;Gravis M
:Medium-sized model for mid-weight pilots. Its {{convert|10|m|ft|1|abbr=on}} span wing has a wing area of {{convert|25.5|m2|sqft|abbr=on}}, 30 cells and the [[Aspect ratio (aeronautics)|aspect ratio]] is 3.9:1. The pilot weight range is {{convert|50|to|70|kg|lb|0|abbr=on}}.<ref name="WDLA04"/>
;Gravis L
:Large-sized model for heavier pilots. Its {{convert|10.5|m|ft|1|abbr=on}} span wing has a wing area of {{convert|27.5|m2|sqft|abbr=on}}, 32 cells and the aspect ratio is 4.0:1. The pilot weight range is {{convert|65|to|85|kg|lb|0|abbr=on}}.<ref name="WDLA04"/>
;Gravis XL
:Extra large-sized model for much heavier pilots. Its {{convert|11.0|m|ft|1|abbr=on}} span wing has a wing area of {{convert|29.5|m2|sqft|abbr=on}}, 34 cells and the aspect ratio is 4.1:1. The pilot weight range is {{convert|80|to|110|kg|lb|0|abbr=on}}.<ref name="WDLA04"/>
<!-- ==Aircraft on display== -->
==Specifications (Gravis L) ==
{{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 -->
<!--
General characteristics
-->
|genhide=
|crew=one
|capacity=
|length m=
|length ft=
|length in=
|length note=
|span m=10.5
|span ft=
|span in=
|span note=
|height m=
|height ft=
|height in=
|height note=
|wing area sqm=27.5
|wing area sqft=
|wing area note=
|aspect ratio=4.0:1
|airfoil=
|empty weight kg=
|empty weight lb=
|empty weight note=
|gross weight kg=
|gross weight lb=
|gross weight note=
|more general=
<!--
Performance
-->
|perfhide=
|max speed kmh=42
|max speed mph=
|max speed kts=
|max speed note=
|cruise speed kmh=
|cruise speed mph=
|cruise speed kts=
|cruise speed note=
|stall speed kmh=
|stall speed mph=
|stall speed kts=
|stall speed note=
|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed speed note=
|g limits=
|roll rate=
|glide ratio=<!-- at {{convert|XX|km/h|mph|0|abbr=on}} -->
|sink rate ms=1.3
|sink rate ftmin=
|sink rate note=<!-- at {{convert|XX|km/h|mph|0|abbr=on}} -->
|lift to drag=
|wing loading kg/m2=
|wing loading lb/sqft=
|wing loading note=
|more performance=
}}
==References==
{{reflist}}
<!-- ==External links== -->
{{Dynamic Sport aircraft}}
[[Category:Dynamic Sport aircraft|Gravis]]
[[Category:Paragliders]]