Danieli Piuma
{{Short description|Italian motorglider}}
{{Use dmy dates|date=December 2022}}
{{Use British English|date=December 2022}}
{{Infobox Aircraft Begin
| name=Piuma | image= | caption= }}{{Infobox Aircraft Type | type=Motor glider | national origin=Italy | manufacturer= | designer=Tiziano Danieli | first flight=1990 | introduced=1990 | retired= | status=Plans available | primary user= | more users= | produced= | number built=13 (all models 2003) | developed from= | variants with their own articles= }} |
The Danieli Piuma ({{langx|en|feather}}) is a family of Italian high-wing, strut-braced, pusher configuration single-seat motor gliders that was designed by Tiziano Danieli of Schio and supplied as plans for amateur construction.Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, page 306. BAI Communications, July 1998. {{ISBN|0-9636409-4-1}}Downey, Julia: 2001 Plans Aircraft Directory, Kitplanes, Volume 18, Number 1, January 2001, page 18. Kitplanes Acquisition Company. ISSN 0891-1851Downey, Julia: 2002 Plans Aircraft Directory, Kitplanes, Volume 19, Number 1, January 2002, pages 15-16. Kitplanes Acquisition Company. ISSN 0891-1851Downey, Julia: 2003 Plans Aircraft Directory, Kitplanes, Volume 20, Number 1, January 2003, page 19. Primedia Publications. ISSN 0891-1851Bertrand, Noel; Rene Coulon; et al: World Directory of Leisure Aviation 2003-04, page 56. Pagefast Ltd, Lancaster OK, 2003. ISSN 1368-485XBayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011-12, page 134. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X
Design and development
The Piuma was designed to be an inexpensive, easy-to-fly and easy-to-build ultralight motor glider. The first model was initially just called the Piuma, but as other models were developed it became known as the Piuma Original.{{Cite web |url=http://www.piumaproject.com/piumaoriginale/originalpiuma.html |title=Piuma Original |accessdate=22 September 2011 |last=Danieli |first=Elia |year=2010 |url-status=dead |archiveurl=https://web.archive.org/web/20111018082324/http://www.piumaproject.com/piumaoriginale/originalpiuma.html |archivedate=18 October 2011 }}
The Piuma is constructed from wood and finished with doped fabric. The semi-tapered {{convert|11.89|m|ft|1|abbr=on}} span wing is supported by a single lift strut on each side and has air brakes. The engine is mounted behind the cockpit. The specified engine is the {{convert|22|kW|hp|0|abbr=on}} KFM 107er, but engines of {{convert|15|to|22|kW|hp|0|abbr=on}} can be fitted. The landing gear is of tricycle configuration and made from steel with rubber shock-absorbers, with an auxiliary tailwheel and fits wheel pants to reduce drag. The tail is cruciform. The aircraft has a glide ratio of 17:1 at {{convert|64|km/h|mph|0|abbr=on}}. Cabin width is {{convert|58|cm|in|0|abbr=on}}
The designer estimated that it would take a builder 1000 hours to complete the aircraft from the plans. The plans cost US$220 in 1998 and included a 30-page construction manual.
Variants
;Piuma Original
:Initial version with {{convert|11.89|m|ft|1|abbr=on}} span wing, first flown in 1990. Eight reported completed in 2003.
;Piuma E
:Improved model with glide ratio of 20:1 at {{convert|71|km/h|mph|0|abbr=on}} and other refinements.
;Piuma Evolution
:Improved model with a wider cockpit, more streamlined fuselage, redesigned tail, new lift struts, electrically retractable nose wheel. main landing gear made from a wood/fibreglass sandwich and a more reclined seat. Four reported completed in 2003.{{Cite web |url=http://www.piumaproject.com/piumaev/piumaeving.html |title=Piuma Evolution |accessdate=22 September 2011 |last=Danieli |first=Elia |year=2010 |url-status=dead |archiveurl=https://web.archive.org/web/20111018082317/http://www.piumaproject.com/piumaev/piumaeving.html |archivedate=18 October 2011 }}
;Piuma Tourer
:Model optimized for cross country powered flight with shorter wing of {{convert|10.39|m|ft|1|abbr=on}} and a NACA 4415 airfoil used in the rectangular portion of the wing and a NACA 2R1-12 airfoil in the tapered wing tip. Cruises at {{convert|135|km/h|mph|0|abbr=on}} and has a 10:1 glide ratio. One reported completed in 2003.{{Cite web |url=http://www.piumaproject.com/piumaveloce/tourerpiuma.html |title=Piuma Tourer |accessdate=22 September 2011 |last=Danieli |first=Elia |year=2010 |url-status=dead |archiveurl=https://web.archive.org/web/20111018082350/http://www.piumaproject.com/piumaveloce/tourerpiuma.html |archivedate=18 October 2011 }}
;Piuma Twin Evolution
:Two seat model with side-by-side configuration seating, introduced in 1998 and inspired by the Tourer. The recommended engine is the Rotax 503 of {{convert|37|kW|hp|0|abbr=on}}.{{Cite web |url=http://www.piumaproject.com/twin/twining.html |title=Piuma Twin Evolution |accessdate=22 September 2011 |last=Danieli |first=Elia |year=2010 |url-status=dead |archiveurl=https://web.archive.org/web/20110824223610/http://www.piumaproject.com/twin/twining.html |archivedate=24 August 2011 }}
Specifications (Piuma Original)
{{Aircraft specs
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|crew=one
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|length m=
|length ft=19.70
|length in=
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|span ft=39.00
|span in=
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|height note=
|wing area sqm=
|wing area sqft=125.0
|wing area note=
|aspect ratio=11:1
|airfoil=Rhode St. Genese 36
|empty weight kg=
|empty weight lb=320
|empty weight note=
|gross weight kg=
|gross weight lb=530
|gross weight note=
|fuel capacity={{convert|15|L}}
|more general=
|eng1 number=1
|eng1 name=KFM 107er
|eng1 type=two-cylinder, two-stroke, single ignition, horizontally opposed aircraft engine
|eng1 kw=22
|eng1 hp=
|prop blade number=2
|prop name=wooden
|prop dia m=
|prop dia ft=
|prop dia in=
|prop note=
|perfhide=
|max speed kmh=
|max speed mph=62
|max speed kts=
|max speed note=
|cruise speed kmh=
|cruise speed mph=50
|cruise speed kts=
|cruise speed note=
|stall speed kmh=
|stall speed mph=30
|stall speed kts=
|stall speed note=
|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed speed note=
|range km=
|range miles=250
|range nmi=
|range note=
|endurance=
|ceiling m=
|ceiling ft=10000
|ceiling note=
|g limits=
|roll rate=
|glide ratio=17:1 at {{convert|64|km/h|mph|0|abbr=on}}
|climb rate ms=
|climb rate ftmin=
|climb rate note=
|sink rate ms=
|sink rate ftmin=500
|sink rate note=
|lift to drag=
|wing loading kg/m2=
|wing loading lb/sqft=4.24
|wing loading note=
|more performance=
|avionics=
}}
See also
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References
{{reflist}}
External links
- {{Official website|http://www.piumaproject.com/homeing.html}}
{{Portal bar|Italy|Companies|Aviation}}
Category:1990s Italian sailplanes
Category:Aircraft first flown in 1990