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Gábor Fekecs Triplane Triplane Triplane Triplane glider glider glider glider flight flight flight flight launched launched launched launched by by by by autotowing autotowing autotowing autotowing in in in in 1923 1923 1923 1923 The The The The name name name name of of of of Istv Istv Istv Istvá á á án n n n Hossz Hossz Hossz Hosszú ú ú ú( ( ( ( 1 1 1 ) ) ) ) is is is is well well well well known known known known in in in in Hungarian Hungarian Hungarian Hungarian aviation aviation aviation aviation circles. circles. circles. circles. The The The The main main main main reason reason reason reason of of of of this this this this is is is is that that that that he he he he was was was was the the the the test test test test pilot pilot pilot pilot of of of of Oscar Oscar Oscar Oscar Asboth's Asboth's Asboth's Asboth's helicopter helicopter helicopter helicopter in in in in 1928. 1928. 1928. 1928. However However However However he he he he was was was was known known known known personally personally personally personally by by by by many many many many old old old old glider glider glider glider pilots pilots pilots pilots as as as as he he he he was was was was the the the the glider glider glider glider mechanic mechanic mechanic mechanic for for for for the the the the Air Air Air Air Scouts Scouts Scouts Scouts in in in in 1930s, 1930s, 1930s, 1930s, and and and and after after after after the the the the war war war war he he he he worked worked worked worked for for for for years years years years at at at at H H H á á ármashat rmashat rmashat rmashatá á á árhegy rhegy rhegy rhegy gliderfield gliderfield gliderfield gliderfield as as as as a a a a mechanic mechanic mechanic mechanic as as as as well. well. well. well. And And And And it it it it is is is is also also also also known known known known that that that that he he he he performed performed performed performed a a a a couple couple couple couple of of of of autotowed autotowed autotowed autotowed flights flights flights flights with with with with a a a a triplane triplane triplane triplane glider glider glider glider of of of of his his his his design design design design at at at at Sisak Sisak Sisak Sisak in in in in 1923. 1923. 1923. 1923. Sisak Sisak Sisak Sisak at at at at those those those those times times times times belonged belonged belonged belonged to to to to the the the the Kingdom Kingdom Kingdom Kingdom of of of of Slovenes-Croats-Serbs Slovenes-Croats-Serbs Slovenes-Croats-Serbs Slovenes-Croats-Serbs (SHS (SHS (SHS (SHS State) State) State) State) and and and and today today today today belongs belongs belongs belongs to to to to the the the the Republic Republic Republic Republic of of of of Croatia. Croatia. Croatia. Croatia. This This This This event event event event is is is is referred( referred( referred( referred( 2 2 2 ) ) ) ) to to to to in in in in a a a a couple couple couple couple of of of of Hungarian Hungarian Hungarian Hungarian aviation aviation aviation aviation history history history history books books books books and and and and articles. articles. articles. articles. The The The The present present present present article article article article is is is is the the the the result result result result of of of of the the the the cooperation cooperation cooperation cooperation of of of of Goran Goran Goran Goran Ili Ili Ili Ilić ć ć ć, , , , Nenad Nenad Nenad Nenad Miklusev Miklusev Miklusev Miklusev and and and and myself myself myself myself in in in in 2009 2009 2009 2009 as as as as well well well well as as as as of of of of searches searches searches searches on on on on the the the the internet, internet, internet, internet, and and and and our our our our knowledge knowledge knowledge knowledge regarding regarding regarding regarding this this this this event event event event was was was was supplemented supplemented supplemented supplemented with with with with new new new new informations. informations. informations. informations. Moreover Moreover Moreover Moreover this this this this article article article article disputes disputes disputes disputes certain certain certain certain assertions assertions assertions assertions regarding regarding regarding regarding the the the the flights flights flights flights in in in in question question question question which which which which appeared appeared appeared appeared in in in in a a a a Croation Croation Croation Croation aviation aviation aviation aviation magazine( magazine( magazine( magazine( 3 3 3 ) ) ) ) and and and and since since since since then then then then the the the the article( article( article( article( 4 4 4 ) ) ) ) was was was was adopted adopted adopted adopted by by by by other other other other Croatian Croatian Croatian Croatian aviation aviation aviation aviation magazin( magazin( magazin( magazin( 5 5 5 ) ) ) ) as as as as well. well. well. well. The boy born at Pécs in Hungary at October 31, 1892, was interested in aviation even in his years of apprenticship and his experimental aircraft models were built one after the other. His career in aviation started at the pilot school of the Austro-Hungarian Empire Flying Corps where he earned his international pilot licence No. 20 at March, 1915. After serving as pilot at the Italian front at 1917 he was appointed as CFI for the pilot school in Novi Sad (then Újvidék). His interest in technical matters and his resourcefullness accompanied him through his whole life. Having studied foreign magazines he started to build a glider even as soon as 1916 but his work was interrupted by the war. After the end of WWI and the formation of the Kingdom of Slovenes-Croats-Serbs the new state wanted to revitalize aviation in the country. For this aviation equipments and factories spared by the war were available and the Entente states also supported the Kingdom donating aviation equipments. As these states rapidly reduced the capacities of their aircraft industries after the war the Kingdom could rely upon to get only equipment remained from the war. The airforce of the new Kingdom had been organized soon and the first air transportation organizations had been also formed, but their aircraft were rapidly wearing out due to their age, their poor designs and their intensive usage. And because of inexpirience numerous accidents also happend. In the ministries for Defence and for the Navy it soon became clear that without creating the Kingdom's own aircraft industry the target could not be met.

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Page 1: G ábor Fekecs - Freeweb.hugliders-fega.freeweb.hu/Hosszu-1923.pdf · G ábor Fekecs Triplane glider flight launched by autotowing in 1923 The name of Istv án Hossz ú(1) is well

Gábor Fekecs

TriplaneTriplaneTriplaneTriplane gliderglidergliderglider flightflightflightflight launchedlaunchedlaunchedlaunched bybybyby autotowingautotowingautotowingautotowinginininin 1923192319231923

TheTheTheThe namenamenamename ofofofof IstvIstvIstvIstváááánnnn HosszHosszHosszHosszúúúú((((1111)))) isisisis wellwellwellwell knownknownknownknown ininininHungarianHungarianHungarianHungarian aviationaviationaviationaviation circles.circles.circles.circles. TheTheTheThe mainmainmainmain reasonreasonreasonreason ofofofof thisthisthisthis isisisisthatthatthatthat hehehehe waswaswaswas thethethethe testtesttesttest pilotpilotpilotpilot ofofofof OscarOscarOscarOscar Asboth'sAsboth'sAsboth'sAsboth's helicopterhelicopterhelicopterhelicopter inininin1928.1928.1928.1928. HoweverHoweverHoweverHowever hehehehe waswaswaswas knownknownknownknown personallypersonallypersonallypersonally bybybyby manymanymanymany oldoldoldoldgliderglidergliderglider pilotspilotspilotspilots asasasas hehehehe waswaswaswas thethethethe gliderglidergliderglider mechanicmechanicmechanicmechanic forforforfor thethethethe AirAirAirAirScoutsScoutsScoutsScouts inininin 1930s,1930s,1930s,1930s, andandandand afterafterafterafter thethethethe warwarwarwar hehehehe workedworkedworkedworked forforforfor yearsyearsyearsyearsatatatat HHHHáááármashatrmashatrmashatrmashatáááárhegyrhegyrhegyrhegy gliderfieldgliderfieldgliderfieldgliderfield asasasas aaaa mechanicmechanicmechanicmechanic asasasas well.well.well.well.AndAndAndAnd itititit isisisis alsoalsoalsoalso knownknownknownknown thatthatthatthat hehehehe performedperformedperformedperformed aaaa couplecouplecouplecouple ofofofofautotowedautotowedautotowedautotowed flightsflightsflightsflights withwithwithwith aaaa triplanetriplanetriplanetriplane gliderglidergliderglider ofofofof hishishishis designdesigndesigndesign atatatatSisakSisakSisakSisak inininin 1923.1923.1923.1923. SisakSisakSisakSisak atatatat thosethosethosethose timestimestimestimes belongedbelongedbelongedbelonged totototo thethethetheKingdomKingdomKingdomKingdom ofofofof Slovenes-Croats-SerbsSlovenes-Croats-SerbsSlovenes-Croats-SerbsSlovenes-Croats-Serbs (SHS(SHS(SHS(SHS State)State)State)State) andandandandtodaytodaytodaytoday belongsbelongsbelongsbelongs totototo thethethethe RepublicRepublicRepublicRepublic ofofofof Croatia.Croatia.Croatia.Croatia. ThisThisThisThis eventeventeventevent isisisisreferred(referred(referred(referred(2222)))) totototo inininin aaaa couplecouplecouplecouple ofofofof HungarianHungarianHungarianHungarian aviationaviationaviationaviation historyhistoryhistoryhistory

booksbooksbooksbooks andandandand articles.articles.articles.articles. TheTheTheThe presentpresentpresentpresent articlearticlearticlearticle isisisis thethethethe resultresultresultresult ofofofof thethethethe cooperationcooperationcooperationcooperation ofofofof GoranGoranGoranGoran IliIliIliIlićććć,,,,NenadNenadNenadNenad MiklusevMiklusevMiklusevMiklusev andandandand myselfmyselfmyselfmyself inininin 2009200920092009 asasasas wellwellwellwell asasasas ofofofof searchessearchessearchessearches onononon thethethethe internet,internet,internet,internet, andandandand ourourourourknowledgeknowledgeknowledgeknowledge regardingregardingregardingregarding thisthisthisthis eventeventeventevent waswaswaswas supplementedsupplementedsupplementedsupplemented withwithwithwith newnewnewnew informations.informations.informations.informations.

MoreoverMoreoverMoreoverMoreover thisthisthisthis articlearticlearticlearticle disputesdisputesdisputesdisputes certaincertaincertaincertain assertionsassertionsassertionsassertions regardingregardingregardingregarding thethethethe flightsflightsflightsflights inininin questionquestionquestionquestion whichwhichwhichwhichappearedappearedappearedappeared inininin aaaa CroationCroationCroationCroation aviationaviationaviationaviation magazine(magazine(magazine(magazine(3333)))) andandandand sincesincesincesince thenthenthenthen thethethethe article(article(article(article(4444)))) waswaswaswas adoptedadoptedadoptedadoptedbybybyby otherotherotherother CroatianCroatianCroatianCroatian aviationaviationaviationaviation magazin(magazin(magazin(magazin(5555)))) asasasas well.well.well.well.

The boy born at Pécs in Hungary at October 31, 1892, was interested in aviation even inhis years of apprenticship and his experimental aircraft models were built one after theother. His career in aviation started at the pilot school of the Austro-Hungarian EmpireFlying Corps where he earned his international pilot licence No. 20 at March, 1915. Afterserving as pilot at the Italian front at 1917 he was appointed as CFI for the pilot school inNovi Sad (then Újvidék). His interest in technical matters and his resourcefullnessaccompanied him through his whole life. Having studied foreign magazines he started tobuild a glider even as soon as 1916 but his work was interrupted by the war.

After the end of WWI and the formation of the Kingdom of Slovenes-Croats-Serbs thenew state wanted to revitalize aviation in the country. For this aviation equipments andfactories spared by the war were available and the Entente states also supported theKingdom donating aviation equipments. As these states rapidly reduced the capacities oftheir aircraft industries after the war the Kingdom could rely upon to get only equipmentremained from the war. The airforce of the new Kingdom had been organized soon andthe first air transportation organizations had been also formed, but their aircraft wererapidly wearing out due to their age, their poor designs and their intensive usage. Andbecause of inexpirience numerous accidents also happend. In the ministries for Defenceand for the Navy it soon became clear that without creating the Kingdom's own aircraftindustry the target could not be met.

Page 2: G ábor Fekecs - Freeweb.hugliders-fega.freeweb.hu/Hosszu-1923.pdf · G ábor Fekecs Triplane glider flight launched by autotowing in 1923 The name of Istv án Hossz ú(1) is well

For repairing the continously deteriorating equipments remained after the war above allrepairing bases were required. For this reason the Aeroplanska workshop was establishedat Novi Sad for aircraft repairs and maintenance. All Slavic aircraft technicians to befound in the Kingdom as well as those aircraft technicians of the formerAustro-Hungarian Monarchy who were living in the Kingdom called together by theworkshop.

The workshop started its activity collecting all the remained equipments and set themright. Required parts for the repairs were in many cases dismounted from aircraft wrecksselected for this purpose, but new items were also produced. Training, private and sportaircraft were handled alike. The workshop later specialized to build prototypes of newdesigns(5).

After the war István Hosszú got to Aeroplanska's workshop as well. In 1922 he started tocontinue the interrupted building of his triplane glider in addition to his regular work. Inthe beginning this work progressed slowly, but later it got momentum when an engineerstudent, reserved military pilot, Vladimir Tišma, who also worked for Aeroplanska,joined him. Tišma obtained his knowledge on aerodinamics and aircraft structures at theTechnical University of Prag.

Note: Certain sources make mentionof that engineer Rudolf Fizir andJosif Mikl together with twoenthusiasts - István Hosszú andVladimir Tišma - were designing anew glider. However the facts arethat Hosszú with Tisma workedindependently, and the Fizir - Miklduo designed a different glider. This

was a high wing monoplane with covered fuselage.

Page 3: G ábor Fekecs - Freeweb.hugliders-fega.freeweb.hu/Hosszu-1923.pdf · G ábor Fekecs Triplane glider flight launched by autotowing in 1923 The name of Istv án Hossz ú(1) is well

The wage of Hosszú in these days had been about 30 dinars and he was not able to finishhis glider. But he was fortunate as his cousin, Karel Ružička, living in Zagreb, was readyto give financial assistance. He supported his project with 150.000 crowns. Hosszú quithis job at Aeroplanska to have ample time to finish the glider. The news about his projecthad got around and he received offers from abroad for purchasing the drawings as wellthe half finished glider. But these offers were rejected by him. However the local aviationauthority did not supported his project.

Because of this situation in Novi Sad he wanted to find another city to complete his glider.Just this time a photographer from Sisak, Lipovšić, an enthusiastic supporter of aviation,contacted him. He accepted his invitation and moved to Sisak in 1922. Lipovšić providedhagar (storage) space, materials and working space. The glider was disassembled andrebuilt partly using better materials according to the calculations of Vladimir Tišma. Thetriplane arrangment was retained at the rebuilt glider, her span was 6 m. The fore part ofthe 5 m long fuselage got a hood, the rear part was a flat frame structure braced by wires.Two bycicle wheel were used for the landing gear. The seat of the pilot was located infront of the wings. With the tail surfaces the glider could have been controlled safely.

At the second part of September, 1922, a gliding competition was held in England(6).Hosszú was keen on to participate in it, however he was not able to complete his gliderbecause of financial reasons. Then they hoped to present their glider in public flying herin Zagreb at November 4. They reconed upon to find new supporters at this event.However this flight never took place due to unfavourable weather.

Page 4: G ábor Fekecs - Freeweb.hugliders-fega.freeweb.hu/Hosszu-1923.pdf · G ábor Fekecs Triplane glider flight launched by autotowing in 1923 The name of Istv án Hossz ú(1) is well

The glider was completed at the end of August, 1923. The location for the first flight wasselected north of Sisak with a slightly inclined road. At September 29, 1923, Lipovšićwas towing the glider piloted by Hosszú with his car running down on the road. A drumwith the towing cable coiled on it was fastened to the rear of the car. The glider wasconnected to the end of the cable which was laid out behind the car. The drum wasmanipulated by Tišma. When the car reached the speed of 40 km/h Hosszú left the groundand Tišma released the break of the drum. The glider climbed to roughly 15 m altitudeand after flying 1700 m distance in tow Hosszú released from the cable and landed.Another couple of similar flights were done, but landing after the last flight the glider wasdamaged. The flights were watched and confirmed by three observers - G. Cetl, G. M.Popović and G. Kolusi - specifically called upon for this event. The flights as well as the

damaged glider after the last flight were photographed(6).

Hosszú and Tišma did not have financial means to repair the damaged glider. The remainsof the glider were stored by Lipovšić, however the further fate of the glider is unknown.

Note: The source(2) mentioned in the introduction describes the flight quitedifferently. According to this source during the first flight the glider climbed to 80 mand after having released and turned flew 28 minutes in rising air, then landed in1700 m distance from the start point. Two days later Tišma at the same location andin similar manner was launched and flew for a couple of minutes.

This version of the event refuted by the presence of the observers and their report aswell as the photographs taken, among them the photograph of the crashed glider on

Page 5: G ábor Fekecs - Freeweb.hugliders-fega.freeweb.hu/Hosszu-1923.pdf · G ábor Fekecs Triplane glider flight launched by autotowing in 1923 The name of Istv án Hossz ú(1) is well

the first day do not speaking of personal accounts of István Hosszú. Unfortunatelyno newspaper came to the hands of the researchers from which this strangeinformation might have originated. Morover an expert's opinion(7) is availableaccording to which there is no such hill in the vicinity of Sisak which would havebeen suitable for slope soaring. And if Hosszú would have been able to fly half anhour climbing from 80 m release height 5 years before Robert Kronfeld performedthe first circling thermal flight, then Hosszú's flight certainly would have triggered aworld sensation.

István Hosszú moved to Hungary in the middle of the 1920s where he was soon engagedin testflying Oszkár Asbóth's helicopter.

2 Csanádi-Nagyváradi-Winkler: A magyar repülés története. Műszaki Könyvkiadó,Budapest, 1977.Simóné Avarosy Éva: Suhanó famadarak. Háttér Lap- és Könyvkiadó, Budapest, 1989.Repülés VII évf. 19. Szám. 1954 okt. 10.

3 'Povijest sporta'. October/November/December 1982.4 'Hrvatski-Vojnik', broj 264, listopad 2009.5 Labud Kirić: Pojava i prvi uspjesi zračnog jedrenja u Hrvatskoj.5 http://www.aeromagazin.rs/arhiva/aero21/c20.htmhttp://www.aeromagazin.rs/arhiva/aero21/c21.htm

6 This was the English gliding competition held in Itford, where the French AlexisMaynerol with his Peyret-tandem glider achived a new world record flying for 3 hoursand 21 minutes breaking F. H. Hentzen's 3 hours 6 minutes world record had beenestablished one month before on the Wasserkuppe.

7 E-mails from Nenad Miklusev and Goran Ilić8 Goran Ilić