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词条 Velocity XL
释义

  1. Design and development

  2. Variants

  3. Rocket Racers

  4. Specifications (XL-RG)

  5. See also

  6. References

  7. External links

name=Velocity XL image=File:Velocity XL FG N114MV.jpg caption=Velocity XL with fixed-gear

}}{{Infobox Aircraft Type

 type=Homebuilt aircraft national origin= manufacturer=Velocity, Inc. designer= first flight= introduced= retired= status= primary user= more users= produced= number built=229 (December 2011) program cost= unit cost= developed from= variants with their own articles=
}}

The Velocity XL (XL: Extra Large) is an American amateur-built aircraft, produced by Velocity, Inc.. It is an enlarged version of their Velocity SE canard pusher design.[1][2]

Design and development

The Velocity XL is {{convert|310|mm|in|abbr=on|0|order=flip}} longer and has a {{convert|510|mm|in|abbr=on|0|order=flip}} greater span than the SE.[3] The standard XL has a cruising range of {{convert|875|nmi|km mi|0}} and a 75% power cruising speed of {{convert|185|kn|mph km/h|0}} air speed.[2][3][4]

The XL is available in both fixed gear (FG) and retractable gear (RG) form and can accommodate either three or four passengers plus a pilot. The five seat versions, the XL-5 and the TXL-RG-5, have a rear bench seat for three rather than the alternative separate pair of seats.[1][2][4][5]

Engines available as kits from the manufacturer for all models are the Lycoming IO-360 of {{Convert|180|to|200|hp|kW|0|abbr=on}}, Lycoming IO-540 of {{Convert|260|to|300|hp|kW|0|abbr=on}}, Continental IO-550 of {{Convert|310|to|350|hp|kW|0|abbr=on}} and the Franklin 6A350C1 of {{Convert|205|to|235|hp|kW|0|abbr=on}}.[1][2][6] Builders may use these manufacturer kits or design their own engine installations using a variety of other engines of similar power output.

Variants

Velocity XL-FG

Fixed landing gear version with a gross weight of {{convert|2700|lb|kg|0|abbr=on}}. Forty had been completed and flown by December 2011.[1]

Velocity XL-FG-5

Fixed landing gear version with a gross weight of {{convert|2900|lb|kg|0|abbr=on}}. Twenty-one had been completed and flown by December 2011.[1]

Velocity XL-RG

Retractable landing gear version, with a gross weight of {{convert|2700|lb|kg|0|abbr=on}}. 150 had been completed and flown by December 2011.[1]

Velocity TXL-RG-5

Retractable landing gear version, with gross weight of {{convert|2900|lb|kg|0|abbr=on}}. Eighteen had been completed and flown by December 2011.[1]

//Velocity V-Twin">Velocity V-Twin

Twin engine prototype, three built, powered by two Superior IO-320-A engines.[7]

Rocket Racers

The now-defunct Rocket Racing League utilized a highly modified Velocity XL FG airframe and an Armadillo Aerospace 2,500 pound thrust liquid oxygen (LOX) and ethanol rocket engine in both its Mark-II X-Racer and Mark-III X-Racer demonstration vehicles. The Mark-II utilized a standard fixed-gear Velocity XL airframe, modified for rocket propulsion. The Mark-III airframe was more extensively customized during manufacture, explicitly for rocket racing, with a canopy top, center seat and control stick and other enhancements, in addition to the rocket propulsion added to the Mark-II.[8]

Specifications (XL-RG)

{{Aircraft specs
|ref=Jane's All the World's Aircraft 2013/14[9]
|prime units?=imp


|genhide=
|crew=One
|capacity=Three
|length m=6.10
|length note=
|span m=9.45
|span note=rear wing; forewing 13 ft 8 in (4.17 m)
|height m=2.56
|height note=
|wing area sqm=9.5
|wing area note=rear wing.
|aspect ratio=
|airfoil=
|empty weight kg=771
|empty weight lb=
|empty weight note=
|gross weight kg=
|gross weight lb=
|gross weight note=
|max takeoff weight kg=1225
|max takeoff weight note=
|fuel capacity={{convert|265|l|impgal|abbr=on|0}}
|more general=


|eng1 number=1
|eng1 name=Continental IO-550
|eng1 type=air-cooled flat six|eng1 hp=310
|eng1 note=
|power original=
|thrust original=
|prop blade number=3
|prop name=Catto
|prop dia m=
|prop dia ft=
|prop dia in=
|prop dia note=


|perfhide=
|max speed kmh=
|max speed mph=
|max speed kts=
|max speed note=
|cruise speed kmh=380
|cruise speed note=normal at 75% power
|stall speed kmh=121
|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=
|minimum control speed kmh=
|minimum control speed mph=
|minimum control speed kts=
|minimum control speed note=
|range miles=1150
|range note=at 65% power
|endurance=
|ceiling m=
|ceiling ft=
|ceiling note=
|g limits=+9/-7
|roll rate=
|glide ratio=
|climb rate ms=
|climb rate ftmin=
|climb rate note=
|time to altitude=
|lift to drag=
|wing loading kg/m2=
|wing loading lb/sqft=
|wing loading note=
|fuel consumption kg/km=
|fuel consumption lb/mi=
|power/mass=
|thrust/weight=
|more performance=

  • Take-off run: {{convert|1300|ft|m|abbr=on|0}}
  • Landing run: {{convert|1500|ft|m|abbr=on|0}}

|avionics=
}}

See also

  • Velocity SE
  • Freedom Aviation Phoenix
  • Rutan Long-EZ
  • Rutan VariEze
  • Rutan Defiant
  • Berkut aircraft
  • Cozy MK IV

References

1. ^1 2 3 4 5 6 Vandermeullen, Richard: 2011 Kit Aircraft Buyer's Guide, Kitplanes, Volume 28, Number 12, December 2011, page 75. Belvoir Publications. {{ISSN|0891-1851}}
2. ^1 2 3 Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011-12, page 125. WDLA UK, Lancaster UK, 2011. {{ISSN|1368-485X}}
3. ^{{cite web|author=Insite |url=http://www.velocityaircraft.com/airplane-specifications.html |title=Velocity Aircraft |publisher=Velocity Aircraft |date= |accessdate=2012-10-24}}
4. ^1 {{cite web|author=Insite |url=http://www.velocityaircraft.com/airplane-models-txl.html |title=Velocity Aircraft |publisher=Velocity Aircraft |date= |accessdate=2012-10-24}}
5. ^{{cite web|author=Insite |url=http://www.velocityaircraft.com/airplane-models-xl5.html |title=Velocity Aircraft |publisher=Velocity Aircraft |date= |accessdate=2012-10-24}}
6. ^{{cite web|url = http://store.velocityaircraft.com/Model.aspx?Modelno=116&featureno=119|title = Engine Installation Kits |accessdate = 10 May 2016|author = Velocity, Inc.|year = 2016}}
7. ^{{cite web|url = http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=91VT|title = N-Number Inquiry Results|accessdate = 29 June 2016|last = Federal Aviation Administration|date = 29 June 2016}}
8. ^Rocket Racing League Announces Milestone Development in X-Racer {{webarchive|url=https://web.archive.org/web/20110715195234/http://www.rocketracingleague.com/wp-content/uploads/2010/03/RRL_PR_Milestones_030310_final.pdf |date=2011-07-15 }}, press release, 2010-03-10, accessed 2010-05-03.
9. ^1 {{cite book |title= Jane's All the World's Aircraft : development & production : 2013-14|last= Jackson |first= Paul A. |edition= |year=2013|publisher=IHS Global|location=|isbn=978-0-7106-3040-7 |pages=968–9}}

External links

{{Commons category|Velocity XL}}
  • {{Official website|http://www.velocityaircraft.com}}
  • Building Ferrell Velocity N44VF
{{Velocity}}

4 : United States civil utility aircraft 1990–1999|Canard aircraft|Homebuilt aircraft|Single-engined pusher aircraft
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