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词条 Gradient Bright
释义

  1. Design and development

  2. Operational history

  3. Variants

  4. Specifications (Bright 26)

  5. References

  6. External links

name=Bright image= caption=

}}{{Infobox Aircraft Type

 type=Paraglider national origin=Czech Republic manufacturer=Gradient sro designer= first flight= introduced= retired= status=In production (Bright 5, 2016) primary user= more users= produced= program cost= unit cost= €2,040 (Bright 26, 2004) developed from= variants with their own articles=
}}

The Gradient Bright is a Czech single-place, paraglider designed and produced by Gradient sro of Prague. Originally produced in the mid-2000s, it was still in production in 2016 as the Bright 5.[1]

Design and development

The Bright was designed as a beginner and flight training glider. The manufacturer says that the "Bright5 is the best school glider Gradient has ever built." The models are each named for their approximate wing area in square metres.[1][2]

Operational history

Reviewer Noel Bertrand singled out the Bright in a 2003 review as deserving of "praise for its excellent performance at low speeds".[1]

Variants

Bright 24

Small-sized model for lighter pilots. Its {{convert|10.8|m|ft|1|abbr=on}} span wing has a wing area of {{convert|24.1|m2|sqft|abbr=on}}, 38 cells and the aspect ratio is 4.8:1. The pilot weight range is {{convert|60|to|80|kg|lb|0|abbr=on}}. The glider model is DHV 1 certified.[1]

Bright 26

Mid-sized model for medium-weight pilots. Its {{convert|11.4|m|ft|1|abbr=on}} span wing has a wing area of {{convert|27.1|m2|sqft|abbr=on}}, 38 cells and the aspect ratio is 4.8:1. The pilot weight range is {{convert|75|to|95|kg|lb|0|abbr=on}}. The glider model is DHV 1 certified.[1]

Bright 28

Large-sized model for heavier pilots. Its {{convert|12.0|m|ft|1|abbr=on}} span wing has a wing area of {{convert|30.0|m2|sqft|abbr=on}}, 38 cells and the aspect ratio is 4.8:1. The pilot weight range is {{convert|90|to|110|kg|lb|0|abbr=on}}. The glider model is DHV 1 certified.[1]

Bright 30

Extra large-sized model for much heavier pilots. Its {{convert|12.52|m|ft|1|abbr=on}} span wing has a wing area of {{convert|32.62|m2|sqft|abbr=on}}, 38 cells and the aspect ratio is 4.8:1. The pilot weight range is {{convert|100|to|130|kg|lb|0|abbr=on}}. The glider model is DHV 1 certified.[1]

Bright 4 22

Extra small-sized model for very light pilots. Its {{convert|10.26|m|ft|1|abbr=on}} span wing has a wing area of {{convert|22.20|m2|sqft|abbr=on}}, 38 cells and the aspect ratio is 4.74:1. The takeoff weight range is {{convert|54|to|66|kg|lb|0|abbr=on}}. The glider model is EN/LTF A certified.[3]

Bright 4 24

Small-sized model for lighter pilots. Its {{convert|10.67|m|ft|1|abbr=on}} span wing has a wing area of {{convert|24.04|m2|sqft|abbr=on}}, 38 cells and the aspect ratio is 4.74:1. The takeoff weight range is {{convert|63|to|80|kg|lb|0|abbr=on}}. The glider model is EN/LTF A certified.[3]

Bright 4 26

Mid-sized model for medium-weight pilots. Its {{convert|11.30|m|ft|1|abbr=on}} span wing has a wing area of {{convert|26.96|m2|sqft|abbr=on}}, 38 cells and the aspect ratio is 4.74:1. The takeoff weight range is {{convert|75|to|95|kg|lb|0|abbr=on}}. The glider model is EN/LTF A certified.[3]

Bright 4 28

Large-sized model for heavier pilots. Its {{convert|11.89|m|ft|1|abbr=on}} span wing has a wing area of {{convert|29.68|m2|sqft|abbr=on}}, 38 cells and the aspect ratio is 4.74:1. The takeoff weight range is {{convert|90|to|110|kg|lb|0|abbr=on}}. The glider model is EN/LTF A certified.[3]

Bright 4 30

Extra large-sized model for much heavier pilots. Its {{convert|12.39|m|ft|1|abbr=on}} span wing has a wing area of {{convert|32.41|m2|sqft|abbr=on}}, 38 cells and the aspect ratio is 4.74:1. The takeoff weight range is {{convert|104|to|140|kg|lb|0|abbr=on}}. The glider model is EN/LTF A certified.[3]

Bright 5 22

Extra small-sized model for very light pilots. Its {{convert|10.31|m|ft|1|abbr=on}} span wing has a wing area of {{convert|22.06|m2|sqft|abbr=on}}, 40 cells and the aspect ratio is 4.82:1. The takeoff weight range is {{convert|54|to|66|kg|lb|0|abbr=on}}. The glider model is EN/LTF A certified.[4]

Bright 5 24

Small-sized model for lighter pilots. Its {{convert|10.73|m|ft|1|abbr=on}} span wing has a wing area of {{convert|23.88|m2|sqft|abbr=on}}, 40 cells and the aspect ratio is 4.82:1. The takeoff weight range is {{convert|63|to|80|kg|lb|0|abbr=on}}. The glider model is EN/LTF A certified.[4]

Bright 5 26

Mid-sized model for medium-weight pilots. Its {{convert|11.36|m|ft|1|abbr=on}} span wing has a wing area of {{convert|26.77|m2|sqft|abbr=on}}, 40 cells and the aspect ratio is 4.82:1. The takeoff weight range is {{convert|75|to|100|kg|lb|0|abbr=on}}. The glider model is EN/LTF A certified.[4]

Bright 5 28

Large-sized model for heavier pilots. Its {{convert|11.92|m|ft|1|abbr=on}} span wing has a wing area of {{convert|29.48|m2|sqft|abbr=on}}, 40 cells and the aspect ratio is 4.82:1. The takeoff weight range is {{convert|90|to|115|kg|lb|0|abbr=on}}. The glider model is EN/LTF A certified.[4]

Bright 5 30

Extra large-sized model for much heavier pilots. Its {{convert|12.44|m|ft|1|abbr=on}} span wing has a wing area of {{convert|32.14|m2|sqft|abbr=on}}, 40 cells and the aspect ratio is 4.82:1. The takeoff weight range is {{convert|95|to|135|kg|lb|0|abbr=on}}. The glider model is EN/LTF A certified.[4]

Specifications (Bright 26)

{{Aircraft specs
|ref=Bertrand[1]
|prime units?=met


|genhide=
|crew=one
|capacity=
|length m=
|length ft=
|length in=
|length note=
|span m=11.4
|span ft=
|span in=
|span note=
|height m=
|height ft=
|height in=
|height note=
|wing area sqm=27.1
|wing area sqft=
|wing area note=
|aspect ratio=4.8:1
|airfoil=
|empty weight kg=
|empty weight lb=
|empty weight note=
|gross weight kg=
|gross weight lb=
|gross weight note=
|more general=


|perfhide=
|max speed kmh=47
|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=
|sink rate ms=1.15
|sink rate ftmin=
|sink rate note=
|lift to drag=
|wing loading kg/m2=
|wing loading lb/sqft=
|wing loading note=
|more performance=
}}

References

1. ^1 2 3 4 5 6 7 Bertrand, Noel; Rene Coulon; et al: World Directory of Leisure Aviation 2003-04, page 19. Pagefast Ltd, Lancaster OK, 2003. ISSN 1368-485X
2. ^{{cite web|url=http://www.gradient.cx/en/Bright5|title=Gradient Bright5|work=Gradient sro|accessdate=2 June 2016}}
3. ^1 2 3 4 {{cite web|url=http://www.gradient.cx/en/Bright4/tech |title=Gradient Bright 4 Technical Data |work=Gradient sro |accessdate=2 June 2016 |deadurl=yes |archiveurl=https://web.archive.org/web/20160510083035/http://www.gradient.cx/en/bright4/tech |archivedate=10 May 2016 |df= }}
4. ^1 2 3 4 {{cite web|url=http://www.gradient.cx/en/Bright5/tech |title=Gradient Bright5 Technical Data |work=Gradient sro |accessdate=2 June 2016 |deadurl=yes |archiveurl=https://web.archive.org/web/20160625161300/http://www.gradient.cx/en/Bright5/tech |archivedate=25 June 2016 |df= }}

External links

  • {{Official website|http://www.gradient.cx/en/Bright5}}
{{Gradient aircraft}}

2 : Gradient aircraft|Paragliders
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