O d\u00f6nemin havac\u0131l\u0131k literat\u00fcr\u00fc yanl\u0131\u015flarla doluydu. \u00dcnl\u00fc Alman havac\u0131 Otto Lilienthal’in tablolar\u0131<\/strong> vard\u0131 mesela. Herkes onlara g\u00fcveniyordu. Wright karde\u015fler de ba\u015fta g\u00fcvendi. Ta ki ellerindeki k\u00fc\u00e7\u00fck kanat modellerini kendileri yapt\u0131klar\u0131 r\u00fczg\u00e2r t\u00fcnelinde test edene kadar.<\/p>\n\n\n\n NASA X-u\u00e7ak ailesinin evrimini g\u00f6steren foto\u011fraf – Wikimedia Commons<\/p>\n\n\n\n R\u00fczg\u00e2r t\u00fcneli dedi\u011fimiz \u015fey, asl\u0131nda 1.8 metrelik tahta bir kutuydu. Ama bu kutu, havac\u0131l\u0131k tarihini de\u011fi\u015ftirecekti. Wright karde\u015fler iki y\u0131l boyunca iki y\u00fczden fazla farkl\u0131 kanat profili test etti. Her birini farkl\u0131 a\u00e7\u0131larda, farkl\u0131 h\u0131zlarda denediler. \u00d6l\u00e7\u00fcmler hassast\u0131, hata pay\u0131 y\u00fczde birin alt\u0131ndayd\u0131. Ve sonu\u00e7 \u015fok ediciydi: Lilienthal’in tablolar\u0131 yan\u0131lt\u0131c\u0131yd\u0131.<\/strong><\/p>\n\n\n\n Kanat e\u011fimi artt\u0131\u011f\u0131nda s\u00fcr\u00fcklenme de art\u0131yordu evet, ama kitaplarda yaz\u0131ld\u0131\u011f\u0131 gibi d\u00fczg\u00fcn de\u011fil, katlanarak<\/strong> art\u0131yordu. Bu k\u00fc\u00e7\u00fck detay, o g\u00fcne kadar onlarca havac\u0131n\u0131n \u00f6l\u00fcm\u00fcne sebep olmu\u015f olabilirdi. Wright karde\u015fler bunu bir masan\u0131n \u00fcst\u00fcnde, tam \u00f6l\u00e7ekli u\u00e7a\u011fa tek kuru\u015f harcamadan \u00f6\u011frenmi\u015fti.<\/p>\n\n\n\n 17 Aral\u0131k 1903, Kitty Hawk kumlar\u0131.<\/strong> Orville yerden kalkt\u0131\u011f\u0131nda 12 saniye havada kald\u0131. 36.5 metre u\u00e7tu. D\u00fcnya bunu ilk motorlu u\u00e7u\u015f olarak hat\u0131rl\u0131yor. Ama as\u0131l zafer havada de\u011fil, o tahta kutunun i\u00e7inde<\/strong> kazan\u0131lm\u0131\u015ft\u0131.<\/p>\n\n\n\n NASA F-18 r\u00fczg\u00e2r t\u00fcneli test modeli – NASA Glenn Research Center<\/p>\n\n\n\n Ger\u00e7ek bir u\u00e7a\u011f\u0131 d\u00fc\u015f\u00fcn\u00fcn. Tonlarca a\u011f\u0131rl\u0131k, y\u00fczlerce kilometre h\u0131z, i\u00e7inde insanlar var. Bir hata yaparsan\u0131z, bedelini hayatla \u00f6dersiniz. Test etmenin maliyeti milyonlarca dolar, geli\u015ftirme s\u00fcresi y\u0131llar al\u0131yor. Her ad\u0131mda prosed\u00fcr, her ad\u0131mda sertifikasyon. Havac\u0131l\u0131k tarihinin en a\u011f\u0131r bedelli i\u015fi budur.<\/p>\n\n\n\n \u015eimdi elinizde 500 graml\u0131k bir model u\u00e7ak oldu\u011funu d\u00fc\u015f\u00fcn\u00fcn. Ayn\u0131 fizik yasalar\u0131 ge\u00e7erli: kald\u0131rma kuvveti, s\u00fcr\u00fcklenme, itki, a\u011f\u0131rl\u0131k. Ama bu kez bir kaza sadece yere d\u00fc\u015fen bir oyuncak demek. Maliyeti birka\u00e7 y\u00fcz lira, geli\u015ftirme s\u00fcresi birka\u00e7 hafta. Hata yapma l\u00fcks\u00fcne sahipsiniz.<\/strong> Ve havac\u0131l\u0131kta hata yapma l\u00fcks\u00fcne sahip olmak, paha bi\u00e7ilmez bir avantajd\u0131r.<\/p>\n\n\n\n RC model u\u00e7ak akrobasi g\u00f6sterisi – Wikimedia Commons<\/p>\n\n\n\n Tabii aralar\u0131nda kritik bir fark var. B\u00fcy\u00fck u\u00e7akta hava, kanat \u00fczerinde farkl\u0131 davran\u0131yor. K\u00fc\u00e7\u00fck modelde hava molek\u00fclleri kanat y\u00fczeyine daha “yap\u0131\u015fkan” gelir, ak\u0131\u015f daha erken kar\u0131\u015f\u0131yor, t\u00fcrb\u00fclans davran\u0131\u015f\u0131 bamba\u015fka. Fizik\u00e7ilerin buna Reynolds say\u0131s\u0131<\/strong> dedi\u011fi bir de\u011fer var, ama hikaye basit: ayn\u0131 kanat k\u00fc\u00e7\u00fclt\u00fcld\u00fc\u011f\u00fcnde farkl\u0131 u\u00e7ar.<\/p>\n\n\n\n Bu y\u00fczden model u\u00e7ak\u00e7\u0131l\u0131k ezber bozan bir okuldu. “B\u00fcy\u00fckte \u00e7al\u0131\u015f\u0131yor” diye bir \u015fey yoktu burada. Her \u015feyi ba\u015ftan \u00f6\u011frenmeniz, ba\u015ftan test etmeniz gerekiyordu. Ve bu zorluk, iyi bir havac\u0131 ile s\u0131radan bir havac\u0131 aras\u0131ndaki fark\u0131 yarat\u0131yordu.<\/p>\n\n\n\n Peki bu oyuncak ne i\u015fe yar\u0131yor diye sorabilirsiniz. \u015eunu s\u00f6yleyelim: F-35 sava\u015f u\u00e7a\u011f\u0131<\/strong> tam \u00f6l\u00e7ekli prototip yapmadan \u00f6nce 74 farkl\u0131 model testten ge\u00e7ti. Bir tam \u00f6l\u00e7ek prototipi 120 milyon dolar, bir model test 850 bin dolar. Aradaki fark, bir \u00fclkenin savunma b\u00fct\u00e7esini bile de\u011fi\u015ftirebilir.<\/p>\n\n\n\n 1920, Worcester, Massachusetts.<\/strong> Robert H. Goddard’\u0131n kafas\u0131nda \u00e7\u0131lg\u0131n bir fikir vard\u0131: s\u0131v\u0131 yak\u0131tl\u0131 roket. O d\u00f6nem roketler kat\u0131 yak\u0131tla \u00e7al\u0131\u015f\u0131yordu, sava\u015f alanlar\u0131nda kullan\u0131lan ilkel \u015feylerdi. Goddard ise roketin atmosferin d\u0131\u015f\u0131na \u00e7\u0131kabilece\u011fini s\u00f6yl\u00fcyordu. Uzaya gidebilece\u011fini.<\/p>\n\n\n\n New York Times gazetesi bunu duyunca yaz\u0131 yazd\u0131: “Bay Goddard san\u0131r\u0131m liseden beri basit fizi\u011fi unutmu\u015f. Roketin itilecek havaya ihtiyac\u0131 var. Uzayda hava yok, dolay\u0131s\u0131yla roket \u00e7al\u0131\u015fmaz.”<\/em> Makale alayc\u0131yd\u0131, a\u015fa\u011f\u0131lay\u0131c\u0131yd\u0131. Goddard bilim adam\u0131 de\u011fil, hayalperest biriymi\u015f gibi g\u00f6sterildi.<\/p>\n\n\n\n Goddard gazetecilere cevap vermedi. Laboratuvar\u0131na gitti ve model roket yapmaya ba\u015flad\u0131.<\/strong> K\u00fc\u00e7\u00fck motor tasar\u0131mlar\u0131, farkl\u0131 yak\u0131t kombinasyonlar\u0131, ate\u015fleme sistemleri. Her biri birka\u00e7 y\u00fcz gram a\u011f\u0131rl\u0131\u011f\u0131ndayd\u0131. Baz\u0131lar\u0131 patlad\u0131, baz\u0131lar\u0131 ate\u015f almad\u0131, baz\u0131lar\u0131 yaln\u0131zca birka\u00e7 saniye \u00e7al\u0131\u015ft\u0131. Goddard sab\u0131rla not tutuyordu. Her ba\u015far\u0131s\u0131zl\u0131k, bir sonraki denemede yap\u0131lmamas\u0131 gereken \u015feyi g\u00f6steriyordu.<\/p>\n\n\n\n 1920 ile 1926 aras\u0131nda 67 farkl\u0131 motor tasar\u0131m\u0131 yapt\u0131. 34 tanesi tamamen ba\u015far\u0131s\u0131z oldu. 18 tanesi k\u0131smen \u00e7al\u0131\u015ft\u0131. 15 tanesi Goddard’\u0131n istedi\u011fi gibi davrand\u0131. Alt\u0131 y\u0131l. 67 deneme. Hepsi masa \u00fcst\u00fcnde, hi\u00e7biri g\u00f6ky\u00fcz\u00fcnde.<\/p>\n\n\n\n 16 Mart 1926.<\/strong> Goddard tarlas\u0131ndayken, roketini f\u0131rlatt\u0131. \u0130\u00e7inde s\u0131v\u0131 oksijen ve benzin vard\u0131. Motor ate\u015flendi, roket y\u00fckseldi. 2.5 saniye sonra yere d\u00fc\u015ft\u00fc. Y\u00fckseldi\u011fi mesafe 12.5 metreydi. H\u0131z\u0131 saatte 96 kilometreyi ge\u00e7memi\u015fti. Ama bu yeterliydi. \u0130nsanl\u0131k tarihin ilk s\u0131v\u0131 yak\u0131tl\u0131 roketini f\u0131rlatm\u0131\u015ft\u0131.<\/strong> Ve New York Times’\u0131n dalga ge\u00e7ti\u011fi adam hakl\u0131 \u00e7\u0131km\u0131\u015ft\u0131.<\/p>\n\n\n\n Modern model roket f\u0131rlatmas\u0131 – Wikimedia Commons<\/p>\n\n\n\n \u0130roni \u015fu ki New York Times \u00f6z\u00fcr dilemesi 43 y\u0131l s\u00fcrd\u00fc. 1969 y\u0131l\u0131nda, Apollo 11 Ay’a gitmeden bir g\u00fcn \u00f6nce, gazetede k\u00fc\u00e7\u00fck bir not yay\u0131nland\u0131: “Daha fazla ara\u015ft\u0131rma ve deney, Bay Goddard’\u0131 hakl\u0131 \u00e7\u0131kard\u0131. Times yan\u0131lm\u0131\u015ft\u0131.”<\/em><\/p>\n\n\n\n Goddard 1945’te \u00f6lm\u00fc\u015ft\u00fc. \u00d6z\u00fcr dilemeyi g\u00f6remedi. Ama onun k\u00fc\u00e7\u00fck model roketlerinden t\u00fcreyen teknolojiyle yap\u0131lan Sat\u00fcrn V roketi, 140 ton y\u00fck\u00fc uzaya ta\u015f\u0131yabiliyordu. Hepsi ayn\u0131 prensibi kullan\u0131yordu: Newton’un \u00fc\u00e7\u00fcnc\u00fc yasas\u0131.<\/strong> Her etki bir tepki yarat\u0131r. Goddard bunu masa \u00fcst\u00fcnde ispatlam\u0131\u015ft\u0131.<\/p>\n\n\n\n Bug\u00fcn d\u00fcnya \u00fczerinde 2 milyondan fazla insan\u0131n model roket\u00e7ilikle ilgilendi\u011fi tahmin ediliyor. \u00c7ocuklar ilk roketlerini 10-12 ya\u015f\u0131nda yap\u0131yor. Her model, Goddard’\u0131n 1920’lerde \u00f6\u011frendi\u011fi dersleri tekrar ediyor: a\u011f\u0131rl\u0131k merkezi, bas\u0131n\u00e7 merkezi, stabilite, itki-k\u00fctle oran\u0131. Form\u00fcllerle de\u011fil, deneyerek \u00f6\u011freniyorlar.<\/p>\n\n\n\n NASA Langley Ara\u015ft\u0131rma Merkezi’nde dev r\u00fczg\u00e2r t\u00fcnelleri var. \u0130\u00e7lerinden biri o kadar b\u00fcy\u00fck ki, i\u00e7ine ger\u00e7ek bir otomobil s\u0131\u011far. Ama bu dev t\u00fcnellerin i\u00e7ine ne koyuyorlar biliyor musunuz? K\u00fc\u00e7\u00fclt\u00fclm\u00fc\u015f modeller.<\/strong><\/p>\n\n\n\n 2000 ile 2020 y\u0131llar\u0131 aras\u0131nda NASA’da yap\u0131lan testlerin y\u00fczde 68’i model testleriydi. Bilgisayar sim\u00fclasyonlar\u0131 var, s\u00fcper g\u00fc\u00e7l\u00fc yaz\u0131l\u0131mlar var, yapay zeka algoritmalar var. Ama h\u00e2l\u00e2 m\u00fchendisler masa \u00fcst\u00fcnde, ellerinde k\u00fc\u00e7\u00fck u\u00e7ak modelleriyle \u00e7al\u0131\u015f\u0131yor.<\/p>\n\n\n\n Bunun sebebi basit: ger\u00e7ek hayatta her \u015fey ters gidebilir.<\/strong> Bilgisayar m\u00fckemmel ko\u015fullar\u0131 varsayar. Model test ise, kanat \u00fczerindeki k\u00fc\u00e7\u00fck bir p\u00fcr\u00fcz\u00fcn, beklenmedik bir t\u00fcrb\u00fclans\u0131n, hesaba kat\u0131lmam\u0131\u015f bir titre\u015fimin etkisini g\u00f6sterir. Ger\u00e7ek d\u00fcnya ideallikten uzakt\u0131r, model testler de \u00f6yle.<\/p>\n\n\n\n Boeing 777’nin 1\/12 \u00f6l\u00e7ekli modeli yap\u0131ld\u0131\u011f\u0131nda, 5.3 metre kanat a\u00e7\u0131kl\u0131\u011f\u0131 vard\u0131. Bu “model” bir arabadan b\u00fcy\u00fckt\u00fc. Ama yine de tam \u00f6l\u00e7e\u011fin yan\u0131nda ufac\u0131kt\u0131. Bu modelle y\u00fczlerce saat test yap\u0131ld\u0131. Farkl\u0131 a\u00e7\u0131larda, farkl\u0131 h\u0131zlarda, farkl\u0131 s\u0131cakl\u0131klarda. Bir test ortalama 120-300 saat s\u00fcr\u00fcyordu. Sonu\u00e7lar, ger\u00e7ek u\u00e7a\u011f\u0131n tasar\u0131m\u0131n\u0131 de\u011fi\u015ftirmi\u015fti.<\/p>\n\n\n\n F-35 hikayesi ise ayr\u0131 bir ders. Program tarihin en pahal\u0131 savunma projesi: 1.7 trilyon dolar. Ama bu rakam daha da y\u00fcksek olabilirdi. \u00c7\u00fcnk\u00fc F-35’in ilk tam \u00f6l\u00e7ekli prototipi yap\u0131lmadan \u00f6nce 74 farkl\u0131 model test yap\u0131ld\u0131. Her test, bir \u015feyleri de\u011fi\u015ftirdi. Bir kanat profili, bir hava giri\u015fi, bir denge noktas\u0131. Tam \u00f6l\u00e7ek yap\u0131ld\u0131\u011f\u0131nda, art\u0131k \u00e7o\u011fu hata giderilmi\u015fti.<\/p>\n\n\n\n Maliyet kar\u015f\u0131la\u015ft\u0131rmas\u0131 \u00e7arp\u0131c\u0131yd\u0131. Tam \u00f6l\u00e7ek bir prototip 120 milyon dolara mal oluyordu ve 36 ay s\u00fcr\u00fcyordu. Bir model test 850 bin dolara yap\u0131l\u0131yor ve 8 ayda bitiyordu. Bilgisayar sim\u00fclasyonu ise 200 bin dolara 4 ayda tamamlan\u0131yordu. Ama \u00fc\u00e7\u00fc birlikte kullan\u0131ld\u0131\u011f\u0131nda, hata pay\u0131 neredeyse s\u0131f\u0131ra iniyordu.<\/p>\n\n\n\n NASA 2015’te m\u00fchendislerine ilgin\u00e7 bir anket yapt\u0131. Sorular basitti: “\u00c7ocukken model u\u00e7ak veya roket yapt\u0131n\u0131z m\u0131? Havac\u0131l\u0131\u011fa ilgi nas\u0131l ba\u015flad\u0131?”<\/p>\n\n\n\n Sonu\u00e7lar \u015fa\u015f\u0131rt\u0131c\u0131yd\u0131. Ankete kat\u0131lan 427 m\u00fchendisten y\u00fczde 73’\u00fc \u00e7ocukken model u\u00e7ak veya roket yapt\u0131\u011f\u0131n\u0131 s\u00f6yledi.<\/strong> \u0130lk havac\u0131l\u0131k ilgisi ya\u015flar\u0131 8-14 aras\u0131ndayd\u0131. Y\u00fczde 94’\u00fc ise “model yap\u0131m\u0131n\u0131n kariyerime do\u011frudan katk\u0131s\u0131 oldu” dedi.<\/p>\n\n\n\n Test pilotlar\u0131n\u0131n hikayesi daha da dikkat \u00e7ekici. Chuck Yeager<\/strong>, 1947’de ses h\u0131z\u0131n\u0131 ilk a\u015fan pilot, bir r\u00f6portajda \u015f\u00f6yle anlatm\u0131\u015ft\u0131: “Hen\u00fcz u\u00e7amadan \u00f6nce, ellerimle her \u015feyi yapmak istedim. Babamla birlikte tahta u\u00e7aklar yapt\u0131k. Motor seslerini taklit ettim. G\u00f6ky\u00fcz\u00fcnde bir u\u00e7ak g\u00f6rd\u00fc\u011f\u00fcmde, nas\u0131l manevra yapt\u0131\u011f\u0131n\u0131 hayal ederdim.”<\/em><\/p>\n\n\n\n Neil Armstrong<\/strong>, Ay’a ayak basan ilk insan, daha da netti: “16 ya\u015f\u0131nda pilot lisans\u0131m\u0131 almadan \u00f6nce, 10 y\u0131l boyunca model u\u00e7ak u\u00e7urdum. Her kaza bana fizik dersi verdi. Kanatlar neden d\u00fc\u015fer, kuyruk neden sallan\u0131r, a\u011f\u0131rl\u0131k merkezi neden \u00f6nemlidir… Bunlar\u0131 kitaptan de\u011fil, ellerimle \u00f6\u011frendim.”<\/em><\/p>\n\n\n\n Patty Wagstaff<\/strong>, \u00fc\u00e7 kez d\u00fcnya akrobasi \u015fampiyonu olan pilot, RC (uzaktan kumandal\u0131) u\u00e7aklardan bahsederken \u015f\u00f6yle demi\u015fti: “RC u\u00e7ak u\u00e7urmak, 3D d\u00fc\u015f\u00fcnmeyi \u00f6\u011fretir. Sa\u011f, sol, yukar\u0131, a\u015fa\u011f\u0131 de\u011fil; \u00fc\u00e7 boyutlu bir uzayda, s\u00fcrekli de\u011fi\u015fen referans noktalar\u0131yla d\u00fc\u015f\u00fcn\u00fcrs\u00fcn\u00fcz. Kokpitte bu d\u00fc\u015f\u00fcnce refleks haline gelir.”<\/em><\/p>\n\n\n\n Arada bir fark var g\u00f6rd\u00fcn\u00fcz m\u00fc? Ger\u00e7ek u\u00e7a\u011f\u0131 u\u00e7uran pilot hatay\u0131 \u00f6nler. Maketle u\u011fra\u015fan \u00e7ocuk ise hatay\u0131 anlar. \u0130kisi de \u00f6nemli, ama biri di\u011ferinden \u00f6nce gelir. Hata yapmadan \u00f6nce hatan\u0131n ne oldu\u011funu bilmek, havac\u0131l\u0131kta can kurtar\u0131r.<\/p>\n\n\n\n 1976’da NASA’n\u0131n Dryden Ara\u015ft\u0131rma Merkezi’nde garip g\u00f6r\u00fcn\u00fcml\u00fc bir kanat modeli test ediliyordu. Kanat ucunda yukar\u0131 k\u0131vr\u0131lm\u0131\u015f k\u00fc\u00e7\u00fck bir par\u00e7a vard\u0131. M\u00fchendisler buna winglet<\/strong> dedi. Fikir basitti: kanat ucundaki hava girdaplar\u0131 enerji kayb\u0131na neden oluyordu. Winglet bu girdab\u0131 azalt\u0131yordu.<\/p>\n\n\n\n \u0130lk test model u\u00e7aklarda yap\u0131ld\u0131. Sonu\u00e7 y\u00fczde 5 yak\u0131t tasarrufu g\u00f6sterdi. “Y\u00fczde 5” k\u00fc\u00e7\u00fck gelebilir, ama bir Boeing 747 g\u00fcnde binlerce kilometre u\u00e7uyor. Y\u00fczde 5, y\u0131lda milyonlarca dolar demek. Bug\u00fcn hangi u\u00e7a\u011fa bakarsan\u0131z bak\u0131n, kanat ucunda winglet g\u00f6r\u00fcrs\u00fcn\u00fcz. Hepsi o k\u00fc\u00e7\u00fck modelden ba\u015flad\u0131.<\/p>\n\n\n\n 1960’larda superkritik kanat profili<\/strong> denen bir \u015fey bulundu. Normal kanatlarda hava h\u0131z\u0131 artt\u0131\u011f\u0131nda \u015fok dalgas\u0131 olu\u015fur, s\u00fcr\u00fcklenme aniden y\u00fckselir. Superkritik kanat bu \u015foku geciktirir, daha h\u0131zl\u0131 u\u00e7maya izin verir. Fikir Richard Whitcomb ad\u0131nda bir NASA m\u00fchendisinden geldi. \u0130lk testler r\u00fczg\u00e2r t\u00fcnelinde, k\u00fc\u00e7\u00fck kanat modelleriyle yap\u0131ld\u0131. Bug\u00fcn Boeing 787’nin kanad\u0131 superkritik profille tasarlanm\u0131\u015f. Daha h\u0131zl\u0131, daha az yak\u0131t t\u00fcketen bir u\u00e7ak.<\/p>\n\n\n\n F-14 ve F-18 sava\u015f u\u00e7aklar\u0131n\u0131n katlanabilir kanatlar\u0131<\/strong> var. Yava\u015f u\u00e7arken kanatlar a\u00e7\u0131k, h\u0131zl\u0131 u\u00e7arken kanat kapal\u0131. Bu fikir 1950’lerde geldi ve ilk testler 1\/10 \u00f6l\u00e7ekli modellerle yap\u0131ld\u0131. Mekanizmay\u0131 test etmek, dengeyi kurmak, kontrol sistemini ayarlamak… Hepsi model \u00fczerinde yap\u0131ld\u0131. Yoksa ilk ger\u00e7ek testte u\u00e7ak havada parampar\u00e7a olabilirdi.<\/p>\n\n\n\n Roket taraf\u0131nda ise a\u011f\u0131rl\u0131k merkezi ile bas\u0131n\u00e7 merkezi dengesi<\/strong> kritikti. Roket f\u0131rlat\u0131ld\u0131\u011f\u0131nda a\u011f\u0131rl\u0131k merkezi (CG) ile bas\u0131n\u00e7 merkezi (CP) aras\u0131nda belirli bir mesafe olmal\u0131. Yoksa roket havada d\u00f6nmeye ba\u015flar, kontrolden \u00e7\u0131kar. Bu kural, ilk defa model roket\u00e7ilikte form\u00fcle edildi. Bug\u00fcn hangi roketi yaparsan\u0131z yap\u0131n, bu kural\u0131 kullan\u0131rs\u0131n\u0131z.<\/p>\n\n\n\n Karbon fiber kanatlar<\/strong>, hafif ve sa\u011flam malzemelerdi. \u0130lk uygulamalar\u0131 1970’lerde model plan\u00f6rlerde yap\u0131ld\u0131. Sonra \u0130HA’lara ge\u00e7ti, sonra ticari u\u00e7aklara. Bug\u00fcn Boeing 787’nin y\u00fczde 50’si karbon fiber. Hepsi o model plan\u00f6rle ba\u015flad\u0131.<\/p>\n\n\n\n 3D bask\u0131 teknolojisi<\/strong> 2010’lardan itibaren model havac\u0131l\u0131kta yayg\u0131nla\u015ft\u0131. \u0130nsanlar karma\u015f\u0131k kanat profilleri, motor par\u00e7alar\u0131, g\u00f6vde bile\u015fenleri bas\u0131yordu. NASA bunu fark etti, GE bunu fark etti. Bug\u00fcn GE’nin LEAP motor serisi 3D bas\u0131lm\u0131\u015f par\u00e7alar i\u00e7eriyor. \u0130lk testler modelde yap\u0131lm\u0131\u015ft\u0131.<\/p>\n\n\n\n T\u00fcrkiye’nin havac\u0131l\u0131k hikayesi, d\u00fcnya tarihinin en ilgin\u00e7 iddialar\u0131ndan biriyle ba\u015flar. 1633 y\u0131l\u0131, \u0130stanbul.<\/strong> Osmanl\u0131 padi\u015fah\u0131 IV. Murad’\u0131n huzurunda, Lagari Hasan \u00c7elebi<\/strong> ad\u0131nda bir mucit, barut dolu bir rokete binerek Sarayburnu’ndan Bo\u011faz’\u0131n \u00fczerinden u\u00e7maya \u00e7al\u0131\u015ft\u0131. Tarih kay\u0131tlar\u0131na g\u00f6re roket ate\u015flendi, \u00c7elebi havaya y\u00fckseldi ve Bo\u011faz’\u0131n kar\u015f\u0131 yakas\u0131na para\u015f\u00fctle indi.<\/p>\n\n\n\n Bu hikayenin ne kadar\u0131 ger\u00e7ek, ne kadar\u0131 efsane tart\u0131\u015fmal\u0131. Ama bir ger\u00e7ek var: T\u00fcrkler, havac\u0131l\u0131\u011fa duydu\u011fu merakla y\u00fczy\u0131llard\u0131r tan\u0131n\u0131yor. Ve bu merak, 20. y\u00fczy\u0131lda model havac\u0131l\u0131kla somut bir forma b\u00fcr\u00fcnd\u00fc.<\/p>\n\n\n\n 1950’ler, Ankara ve \u0130stanbul.<\/strong> T\u00fcrkiye’de model u\u00e7ak merak\u0131, genellikle lise ve \u00fcniversite \u00f6\u011frencileri aras\u0131nda yay\u0131ld\u0131. \u0130lk kul\u00fcpler \u0130stanbul Teknik \u00dcniversitesi ve Ankara’daki m\u00fchendislik okullar\u0131nda kuruldu. \u00d6\u011frenciler, Bat\u0131’dan gelen dergileri inceleyerek balsa a\u011fac\u0131ndan u\u00e7aklar yap\u0131yordu. Malzeme bulmak zordu, ithal \u00fcr\u00fcnler pahal\u0131yd\u0131. Ama merak daha g\u00fc\u00e7l\u00fcyd\u00fc.<\/p>\n\n\n\n 1968’de T\u00fcrk Hava Kurumu<\/strong> model havac\u0131l\u0131k faaliyetlerine resmi destek vermeye ba\u015flad\u0131. \u0130lk ulusal yar\u0131\u015fmalar d\u00fczenlendi. Kazananlar, yurtd\u0131\u015f\u0131 yar\u0131\u015fmalara g\u00f6nderildi. T\u00fcrk gen\u00e7leri Avrupa pistlerinde T\u00fcrk bayra\u011f\u0131yla boy g\u00f6stermeye ba\u015flad\u0131.<\/p>\n\n\n\n Bu d\u00f6nemde T\u00fcrkiye’de model havac\u0131l\u0131k ciddi bir spor dal\u0131 haline geldi. Her y\u0131l d\u00fczenlenen ulusal \u015fampiyonalara y\u00fczlerce sporcu kat\u0131l\u0131yordu. Radyo kontroll\u00fc (RC) u\u00e7ak teknolojisi T\u00fcrkiye’ye geldi. \u0130lk elektronik sistemler, ilk uzaktan kumandalar… Fiyatlar h\u00e2l\u00e2 y\u00fcksekti, ama art\u0131k bir end\u00fcstri olu\u015fmaya ba\u015flam\u0131\u015ft\u0131.<\/p>\n\n\n\n 1982’de T\u00fcrkiye<\/strong>, D\u00fcnya Model Havac\u0131l\u0131k \u015eampiyonas\u0131’na ev sahipli\u011fi yapt\u0131. \u0130stanbul’da d\u00fczenlenen organizasyon, T\u00fcrk model havac\u0131l\u0131\u011f\u0131n\u0131n uluslararas\u0131 arenada tan\u0131nmas\u0131n\u0131 sa\u011flad\u0131. T\u00fcrk sporcular kategorilerinde derece ald\u0131, d\u00fcnya s\u0131ralamas\u0131na girdi.<\/p>\n\n\n\n Model roket\u00e7ilik T\u00fcrkiye’ye biraz ge\u00e7 geldi. 1990’lar\u0131n ortas\u0131<\/strong>, \u00fcniversitelerdeki havac\u0131l\u0131k ve uzay m\u00fchendisli\u011fi b\u00f6l\u00fcmleri model roket at\u00f6lyelerini yayg\u0131nla\u015ft\u0131rmaya ba\u015flad\u0131. \u0130T\u00dc, ODT\u00dc, Hava Harp Okulu \u00f6\u011frencileri ilk roketlerini tasarlay\u0131p f\u0131rlatt\u0131.<\/p>\n\n\n\n Bu d\u00f6nemde bir sorun vard\u0131: g\u00fcvenlik ve yasal d\u00fczenlemeler.<\/strong> Model roket motorlar\u0131 kolayca bulunmuyordu, ithalat karma\u015f\u0131kt\u0131. Ama m\u00fchendislik fak\u00fclteleri kendi motorlar\u0131n\u0131 yapmaya ba\u015flad\u0131. \u015eeker bazl\u0131 yak\u0131tlar, kompozit malzemeler, elektronik ate\u015fleme sistemleri… Her \u015fey s\u0131f\u0131rdan \u00f6\u011freniliyordu.<\/p>\n\n\n\n 2011 y\u0131l\u0131nda kurulan T\u00fcrk Teknoloji Tak\u0131m\u0131 Vakf\u0131 (T3 Vakf\u0131)<\/strong>, T\u00fcrkiye’de havac\u0131l\u0131k ve uzay \u00e7al\u0131\u015fmalar\u0131nda yeni bir \u00e7a\u011f ba\u015flatt\u0131. Vakf\u0131n amac\u0131 netti: gen\u00e7leri havac\u0131l\u0131k, uzay ve teknoloji alanlar\u0131na \u00e7ekmek. Ve bunu yapman\u0131n en iyi yolu, yar\u0131\u015fmalard\u0131<\/strong>.<\/p>\n\n\n\n T3 Vakf\u0131’n\u0131n ilk b\u00fcy\u00fck projesi TEKNOFEST<\/strong> oldu. 2018’de ba\u015flayan festival, model havac\u0131l\u0131k ve roket\u00e7ilik i\u00e7in T\u00fcrkiye’de g\u00f6r\u00fclmemi\u015f bir f\u0131rsat yaratt\u0131. \u00dcniversite \u00f6\u011frencileri, lise \u00f6\u011frencileri, hatta ilkokul \u00f6\u011frencileri bile roket tasarlay\u0131p yar\u0131\u015ft\u0131.<\/p>\n\n\n\n TEKNOFEST’in yar\u0131\u015fma kategorileri:<\/strong><\/p>\n\n\n\n 2018 – \u0130lk TEKNOFEST:<\/strong> 550.000 ziyaret\u00e7i, 10.000’den fazla yar\u0131\u015fmac\u0131. \u0130stanbul Atat\u00fcrk Havaliman\u0131’nda d\u00fczenlendi. T\u00fcrkiye havac\u0131l\u0131k tarihinde b\u00f6yle bir organizasyon g\u00f6r\u00fclmemi\u015fti. Gen\u00e7ler roketler tasarlad\u0131, \u0130HA’lar u\u00e7urdu, m\u00fchendislik projeleri sundu.<\/p>\n\n\n\n 2019:<\/strong> Ziyaret\u00e7i say\u0131s\u0131 1.720.000’e \u00e7\u0131kt\u0131. Art\u0131k sadece bir festival de\u011fil, bir ak\u0131m<\/strong> olmu\u015ftu. Aileler \u00e7ocuklar\u0131yla geliyordu, \u00f6\u011fretmenler \u00f6\u011frencilerini getiriyordu. Roket f\u0131rlatma pistleri dolup ta\u015f\u0131yordu.<\/p>\n\n\n\n 2021:<\/strong> Festival Gaziantep, Samsun, \u0130zmir gibi \u015fehirlere yay\u0131ld\u0131. Art\u0131k sadece \u0130stanbul de\u011fil, Anadolu’nun her yan\u0131ndan gen\u00e7ler yar\u0131\u015f\u0131yordu. Roket yar\u0131\u015fmas\u0131na 1200’den fazla tak\u0131m ba\u015fvurdu. Model uydu yar\u0131\u015fmas\u0131 d\u00fcnya \u00e7ap\u0131nda ilgi g\u00f6rd\u00fc.<\/p>\n\n\n\n 2024:<\/strong> TEKNOFEST, Avrupa’n\u0131n en b\u00fcy\u00fck havac\u0131l\u0131k ve uzay festivali \u00fcnvan\u0131n\u0131 ald\u0131. Azerbaycan’da da d\u00fczenlendi. T\u00fcrk model roket\u00e7ili\u011fi, art\u0131k sadece ulusal de\u011fil, b\u00f6lgesel bir fenomendi<\/strong>.<\/p>\n\n\n\n T3 Vakf\u0131’n\u0131n etkisi sadece festivallerle s\u0131n\u0131rl\u0131 kalmad\u0131. Vak\u0131f, \u00fcniversitelerde roket ve \u0130HA laboratuvarlar\u0131 kurulmas\u0131n\u0131 destekledi. Lise d\u00fczeyinde “Roket Atan Okullar”<\/strong> projesi ba\u015flatt\u0131. \u00d6\u011fretmenlere e\u011fitim verdi, malzeme kitleri da\u011f\u0131tt\u0131.<\/p>\n\n\n\n Vakf\u0131n en \u00f6nemli ba\u015far\u0131s\u0131 ise zihniyet de\u011fi\u015fimiydi<\/strong>. Eskiden “roket yap\u0131m\u0131” \u00fcniversite d\u00fczeyinde bir aktiviteydi. \u015eimdi ortaokul \u00f6\u011frencileri bile roket tasarl\u0131yor, f\u0131rlat\u0131yor, verileri analiz ediyordu. 2015’te T\u00fcrkiye’de aktif model roket\u00e7i say\u0131s\u0131 birka\u00e7 y\u00fczd\u00fc. 2024’te bu say\u0131 50.000’i a\u015fm\u0131\u015f durumda.<\/strong><\/p>\n\n\n\n Bug\u00fcn T\u00fcrkiye’de onlarca model havac\u0131l\u0131k kul\u00fcb\u00fc aktif. Her \u015fehirde RC u\u00e7ak pisti var. Model roket motorlar\u0131 art\u0131k yerel \u00fcreticiler taraf\u0131ndan sa\u011flan\u0131yor. 3D yaz\u0131c\u0131lar sayesinde karma\u015f\u0131k par\u00e7alar evde bas\u0131labiliyor. T\u00fcrk \u00f6\u011frenciler uluslararas\u0131 yar\u0131\u015fmalarda derece al\u0131yor.<\/p>\n\n\n\n TEKNOFEST 2025<\/strong> i\u00e7in planlar daha da iddial\u0131. Y\u00fcksek irtifa roket yar\u0131\u015fmas\u0131 (10 km \u00fczeri), hibrid motor kategorileri, yapay zeka destekli otonom u\u00e7u\u015f yar\u0131\u015fmalar\u0131… T\u00fcrkiye, model havac\u0131l\u0131kta art\u0131k sadece t\u00fcketici de\u011fil, \u00fcretici<\/strong> konumunda.<\/p>\n\n\n\n En \u00f6nemlisi, bu faaliyetler sonu\u00e7 veriyor. T3 Vakf\u0131 verilerine g\u00f6re, TEKNOFEST’e kat\u0131lan \u00f6\u011frencilerin y\u00fczde 68’i<\/strong> m\u00fchendislik alanlar\u0131na y\u00f6neliyor. Model roket ve \u0130HA yar\u0131\u015fmalar\u0131na kat\u0131lanlar\u0131n b\u00fcy\u00fck \u00e7o\u011funlu\u011fu havac\u0131l\u0131k ve uzay m\u00fchendisli\u011fi b\u00f6l\u00fcmlerini tercih ediyor.<\/p>\n\n\n\n Lagari Hasan \u00c7elebi’nin 1633’te Bo\u011faz’\u0131n \u00fczerinden ge\u00e7ti\u011fi iddia edilen yolculuk belki bir efsanedir. Ama 2025’te T\u00fcrkiye’de binlerce gen\u00e7 roket f\u0131rlat\u0131yor, u\u00e7ak tasarl\u0131yor, g\u00f6ky\u00fcz\u00fcne bakarak “neden u\u00e7uyor?” diye soruyor. Ve bu hi\u00e7 de efsane de\u011fil. Bu ger\u00e7ek.<\/strong><\/p>\n\n\n\n Blog yazarlar\u0131 ve i\u00e7erik \u00fcreticileri i\u00e7in en b\u00fcy\u00fck sorun yasal g\u00f6rseller bulmak. Havac\u0131l\u0131k konusunda \u015fansl\u0131s\u0131n\u0131z, \u00e7\u00fcnk\u00fc NASA, Smithsonian ve di\u011fer resmi kurumlar ar\u015fivlerini halka a\u00e7m\u0131\u015f durumda.<\/p>\n\n\n\n NASA Image and Video Library<\/strong> (images.nasa.gov<\/a>) d\u00fcnyaca \u00fcnl\u00fc g\u00f6rsellere bedava eri\u015fim sa\u011fl\u0131yor. Public domain, yani tamamen \u00fccretsiz. “Wind tunnel model” veya “aerodynamics test” aramas\u0131 yaparsan\u0131z binlerce foto\u011fraf bulursunuz. Hepsini indirebilir, blog yaz\u0131n\u0131zda kullanabilirsiniz.<\/p>\n\n\n\n Smithsonian National Air and Space Museum<\/strong> (airandspace.si.edu\/collections<\/a>) havac\u0131l\u0131k tarihinin en b\u00fcy\u00fck ar\u015fivlerinden biri. 60 binin \u00fczerinde g\u00f6rsel var. Creative Commons Zero lisans\u0131 var, yani kullanmak i\u00e7in hi\u00e7bir izin gerekmez. Kay\u0131t bile gerekmez.<\/p>\n\n\n\n Wikimedia Commons<\/strong> (commons.wikimedia.org\/wiki\/Category:Aviation<\/a>) topluluk destekli bir ar\u015fiv. \u00c7o\u011fu g\u00f6rsel CC-BY-SA lisans\u0131yla sunuluyor. Kaynak g\u00f6sterdi\u011finiz s\u00fcrece serbest kullan\u0131m var. “Model aircraft” veya “wind tunnel” aramas\u0131 yap\u0131n, harika g\u00f6rseller \u00e7\u0131kar.<\/p>\n\n\n\n Internet Archive<\/strong> (archive.org\/details\/nasa<\/a>) NASA’n\u0131n teknik raporlar\u0131n\u0131 bar\u0131nd\u0131r\u0131yor. Eski belgelerde tarihi foto\u011fraflar var, hepsi public domain. PDF olarak indirebilirsiniz.<\/p>\n\n\n\n ESA Multimedia Gallery<\/strong> (esa.int\/ESA_Multimedia\/Images<\/a>) Avrupa Uzay Ajans\u0131’n\u0131n ar\u015fivi. At\u0131f yapt\u0131\u011f\u0131n\u0131z s\u00fcrece kullanabilirsiniz.<\/p>\n\n\n\n![\"NASA](\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/1\/17\/X-planes_group_photo.jpg\")
<\/figure>\n\n\n\n![\"NASA](\"https:\/\/www.grc.nasa.gov\/www\/k-12\/airplane\/Images\/f18test1.jpg\")
<\/figure>\n\n\n\n
\n\n\n\n\u0130ki D\u00fcnya, Ayn\u0131 Fizik<\/h2>\n\n\n\n
![\"RC](\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/1\/1f\/Extreme_Flight_74%22_Slick_flying_the_knife_edge_IMG_4466_FRD.jpg\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/bizimkokpit.com\/wp-content\/uploads\/2026\/02\/960px-Freewing_Avanti_S_80mm_EDF_Jet_IMG_4185_FRD.jpg\")
<\/a><\/figure>\n\n\n\nGoddard: Dalga Ge\u00e7enlerin Yan\u0131lg\u0131s\u0131<\/h2>\n\n\n\n
<\/a><\/figure>\n\n\n\n<\/figure>\n\n\n\n<\/a><\/figure>\n\n\n\nNASA ve Model Testler: Klasik Y\u00f6ntem H\u00e2l\u00e2 Ge\u00e7erli<\/h2>\n\n\n\n
<\/figure>\n\n\n\nMasadan Kokpite: Bir Neslin Yolculu\u011fu<\/h2>\n\n\n\n
K\u00fc\u00e7\u00fck Kanatlarda Ba\u015flayan B\u00fcy\u00fck De\u011fi\u015fimler<\/h2>\n\n\n\n
\n\n\n\nT\u00fcrkiye’de Model Havac\u0131l\u0131k: Gelenekten Gelece\u011fe<\/h2>\n\n\n\n
Erken D\u00f6nem: 1950’ler ve 1960’lar<\/h3>\n\n\n\n
Alt\u0131n Y\u0131llar: 1970’ler ve 1980’ler<\/h3>\n\n\n\n
Model Roket\u00e7ilik: 1990’lar<\/h3>\n\n\n\n
T3 Vakf\u0131 ve D\u00f6n\u00fc\u015f\u00fcm: 2010’lar<\/h3>\n\n\n\n
\n
TEKNOFEST: Rakamlarla B\u00fcy\u00fcme<\/h3>\n\n\n\n
T3 Vakf\u0131’n\u0131n Katk\u0131lar\u0131<\/h3>\n\n\n\n
G\u00fcn\u00fcm\u00fcz: 2025 ve Sonras\u0131<\/h3>\n\n\n\n
\n\n\n\nG\u00f6rsel Rehber: Nereden Bulunur, Nas\u0131l Kullan\u0131l\u0131r<\/h2>\n\n\n\n