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)

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|airfoil=Rhode St. Genese 36

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|eng1 number=1

|eng1 name=KFM 107er

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See also

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References

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