Rubik R-26 Góbé

One of a series of all-metal gliders designed by Rubik from 1957 onwards, the R-26 Góbé was intended to provide two-seat instruction, with the rear seat raised for a view forward.{{cite book |title=Sailplanes 1945-1965 |last=Simons |first=Martin |edition=2nd revised |year=2006|publisher= EQIP Werbung & Verlag GmbH|location=Königswinter |isbn=3 9807977 4 0|pages=88–90}} Series production started in 1962{{cite book |title= Jane's All the World's Aircraft 1962-63|last= Taylor |first= John W R |year=1962|publisher= Sampson Low, Marston & Co. Ltd|location= London|page=328 }} and the first production aircraft flew in August 1963. Almost 200 were produced.

The R-26 Góbé is of predominately aluminium monocoque construction. The wings have a metal D-box ahead of a single main spar, covered in corrugated aluminum alloy sheets, aft of the spar they are covered in doped fabric. The wing has a modified a Goettingen 549 airfoil; the perforated Schempp-Hirth air brakes extend from the upper and lower wing surfaces. The slatted Frise ailerons are covered in doped fabric. The corrugated aluminum sheets on the leading edges proved to be stiff enough, having enabled Rubik to use significantly less ribs and rivets compared to similar all-metal constructions. The result was lower production costs, and - along with the extensive use of fabric on the trailing edges and on the fuselage - an empty weight comparable to that of a single-seat glider. The landing gear consists of a fixed monowheel and a tail skid. The balanced rudder is notably large and effective.{{Cite web|url = http://www.ae.illinois.edu/m-selig/ads/aircraft.html|title = The Incomplete Guide to Airfoil Usage |access-date = 1 July 2011|last = Lednicer |first = David |year = 2010}}

The V-tail of the first prototype was judged unsuitable for training and was replaced on the second prototype and production aircraft by a conventional unit.

The aircraft controls are attached to the control surfaces with pushrods, the trim handle is attached to the trim tab with bowden cables.{{Citation needed|date=June 2018}}

The instructor seat is not equipped with instruments; the rear seat is raised in order to give the instructor a view on the instruments mounted in front of the student. A separate rear seat instrument kit was available as optional equipment, making the glider capable for instrument (IFR) training.{{cite book |url=http://mek.oszk.hu/05700/05720/05720.pdf|title=Magyar vitorlázó repülőgépek|author= Jereb Gábor|publisher= Műszaki Könyvkiadó|access-date=13 Oct 2014|quote=Az igényesebb repülési feladatok és a műszer szerinti repülés gyakorlásához (ebben az esetben a növendék a hátsó, teljesen befüggönyözhető ülésben ül) az ülések között keresztben húzódó szilárdsági elemre pillanatzárral rögzíthető pótműszerfal illeszthető.}}

The R-26S was designed to be easy to disassemble for ground transportation via trailer.

193 production Góbés were built; most serving in Hungary. Fifteen were exported to Cuba, one to the United Kingdom and one to Austria.

It was not type certificated in the United States; the one imported was registered with the Federal Aviation Administration in the Experimental - Exhibition category.{{Cite web|url = http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=510AS|title = Make / Model Inquiry Results N510AS|access-date = 15 July 2011|last = Federal Aviation Administration|author-link = Federal Aviation Administration|date=July 2011}} As of April 2018, it is privately owned and based in Augusta, New Jersey.

In mid-2010 seventy R-26S and fifty-seven R-26SU remained on the Hungarian civil register.{{cite book |title=European registers handbook 2010 |last= Partington |first=Dave |year=2010|publisher= Air Britain (Historians) Ltd|isbn=978-0-85130-425-0}}

;R-26P1:First prototype, first flown in May 1961.Note:Simons places the first flight in 1960 and "Hungarian Gliders" has it exactly a year earlier than the date in Jane's V-tail.

;R-26P2

:Second prototype, first flown in August 1961.{{cite web |url=http://gliders-fega.freeweb.hu/gobe.html|title=Hungarian Gliders 1933-2000 |access-date=25 June 2012}} Conventional tail.

;R-26S Góbé

:Production aircraft, built from 1963. 115 produced.

;R-26SU Góbé '82

:Modified to meet European/US market requirements. Production begun in 1982, totalling 78.

;R-26M Motor Góbé

:A two-stroke engine was mounted on one of the R-26S models for experimental purposes. The aircraft was later reverted to standard R-26S configuration.{{cite web |url=http://www.avia-info.hu/talalat.php?KeresettSzo=HA-5393|title=HA-5393 |access-date=9 Oct 2015|quote=Kísérletként Motor-Góbévá alakították át. }}

• R-26S HA-5355 is on display in the Transport Museum of Budapest.{{cite book |title=Aviation Museums and Collections of Mainland Europe |last= Ogden |first=Bob |year=2009|publisher= Air Britain (Historians) Ltd|isbn=978 0 85130 418 2}}
• R-26S HA-5410 is on display in the Museum of Hungarian Aviation, Szolnok.
• R-26S HA-5392 is on display in the Slovak Technical Museum, Košice.

File:Rubik R-26S Góbé 3-view.svg

{{Aircraft specs

|ref=Sailplane Directory and Soaring The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II{{cite book|last=Shenstone|first=B.S.|title=The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II|year=1963|publisher=Organisation Scientifique et Technique Internationale du Vol a Voile (OSTIV) and Schweizer Aero-Revue|location=Zurich|pages=128–129|edition=1st|author2=K.G. Wilkinson |language=en, fr, de}}

|prime units?=met

|crew=one

|capacity=one passenger

|length m=

|span m=14.0

|height m=

|wing area sqm=

|wing area sqft=193.75

|aspect ratio=10.88:1

|airfoil=Goettingen 549

|empty weight lb=507

|gross weight lb=970

|stall speed kmh=60

|never exceed speed kmh=170

|never exceed speed note=

• Rough air speed max: {{cvt|110|km/h}}
• Aerotow speed: {{cvt|110|km/h}}
• Winch launch speed: {{cvt|110|km/h}}

|g limits=+2.8 -1 at {{cvt|170|km/h}}

|glide ratio= 23.7:1 at {{cvt|81|km/h}}

|sink rate ms=0.96

|sink rate note= at {{cvt|75|km/h}}

|wing loading kg/m2=20.56

|wing loading lb/sqft=

|wing loading note= at normal gross weight, {{cvt|22.22|kg/m2}} at maximum take-off weight

}}

{{aircontent

|see also=

|related=

|similar aircraft=

• Schweizer SGS 2-33

|lists=

• List of gliders
• List of Hungarian gliders

}}

{{Commons category|R-26S Góbé}}

{{Reflist}}

• {{cite book |title=Aviation Museums and Collections of Mainland Europe |last= Ogden |first=Bob |year=2009|publisher= Air Britain (Historians) Ltd|isbn=978 0 85130 418 2}}
• {{cite web |url=http://gliders-fega.freeweb.hu/gobe.html|title=Hungarian Gliders 1933-2000 |access-date=25 June 2012}}
• {{cite book |title= Jane's All the World's Aircraft 1962-63|last= Taylor |first= John W R |year=1962|publisher= Sampson Low, Marston & Co. Ltd|location= London|page=328 }}
• {{cite book |title=European registers handbook 2010 |last= Partington |first=Dave |year=2010|publisher= Air Britain (Historians) Ltd|isbn=978-0-85130-425-0}}
• {{Cite web|url = http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=510AS|title = Make / Model Inquiry Results N510AS|access-date = 15 July 2011|last = Federal Aviation Administration|author-link = Federal Aviation Administration|date=July 2011}}
• {{Cite web|url = http://www.ae.illinois.edu/m-selig/ads/aircraft.html|title = The Incomplete Guide to Airfoil Usage |access-date = 1 July 2011|last = Lednicer |first = David |year = 2010}}
• {{cite book |title=Sailplanes 1945-1965 |last=Simons |first=Martin |edition=2nd revised |year=2006|publisher= EQIP Werbung & Verlag GmbH|location=Königswinter |isbn=3 9807977 4 0|pages=88–90}}
• {{cite journal|last=Said|first=Bob|title=1983 Sailplane Directory|journal=Soaring Magazine|date=November 1983|pages=82|publisher=Soaring Society of America}}
• {{cite book|last=Shenstone|first=B.S.|title=The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II|year=1963|publisher=Organisation Scientifique et Technique Internationale du Vol a Voile (OSTIV) and Schweizer Aero-Revue|location=Zurich|pages=128–129|edition=1st|author2=K.G. Wilkinson |language=en, fr, de}}
• {{Cite web|url = http://www.sailplanedirectory.com/PlaneDetails.cfm?PlaneID=123|title = Gobe R-26S Auto-Aero |access-date = 12 July 2011|last = Activate Media|year = 2006}}

{{Rubik aircraft}}

{{DEFAULTSORT:Rubik R-26 Gobe}}

Category:1960s Hungarian sailplanes

Category:Rubik aircraft

Category:Aircraft first flown in 1961