{"id":1314,"date":"2015-08-11T10:03:14","date_gmt":"2015-08-11T10:03:14","guid":{"rendered":"http:\/\/bizimkokpit.com\/?p=1314"},"modified":"2015-08-11T10:03:14","modified_gmt":"2015-08-11T10:03:14","slug":"g-loc-nedir","status":"publish","type":"post","link":"https:\/\/bizimkokpit.com\/index.php\/2015\/08\/11\/g-loc-nedir\/","title":{"rendered":"G-LOC Nedir?"},"content":{"rendered":"<p>Jet u\u00e7ak pilotlar\u0131n\u0131 ilgilendiren G-Loc havac\u0131l\u0131kta herkes taraf\u0131ndan merak edilen konulardan biridir. \u0130\u015fte size k\u0131saca G-LOC \u00f6zeti&#8230;<\/p>\n<p>Artan G kuvvetlerine ba\u011fl\u0131 olarak beyin kan dola\u015f\u0131m\u0131n\u0131n ani ve kritik d\u00fczeyde azalmas\u0131 sonucu ortaya \u00e7\u0131kan bilin\u00e7 kayb\u0131, &#8220;G &#8211; LOC&#8221; (G &#8211; Induced Loss of Consciousness) olarak tan\u0131mlan\u0131r.<\/p>\n<p>Bu fenomen ilk olarak \u0130ngiltere&#8217;de 1.d\u00fcnya sava\u015f\u0131nda &#8220;havada bay\u0131lma&#8221; olarak isimlendirildi ve o zamanlar bile baz\u0131 askeri u\u00e7ak kazalar\u0131n\u0131n nedeni oldu. ABD&#8217; de ise G-LOC ile ilk olarak 1922&#8242; deki Pulitzer hava yar\u0131\u015flar\u0131 s\u0131ras\u0131nda kar\u015f\u0131la\u015f\u0131ld\u0131.<\/p>\n<p>G-LOC, 1978 y\u0131l\u0131nda santrif\u00fcj u\u00e7u\u015flar\u0131nda ki\u015filer \u00fczerinde ortaya \u00e7\u0131k\u0131\u015f\u0131 g\u00f6r\u00fcnt\u00fcleninceye ve F-15 u\u00e7aklar\u0131nda pilotlar taraf\u0131ndan G-LOC&#8217; a ba\u011fl\u0131 olarak kazaya \u00e7ok yakla\u015ft\u0131klar\u0131 rapor edilinceye kadar b\u00fcy\u00fck bir tehdit olarak kabul edilmiyordu. Bu potansiyel tehlike y\u00fcksek performansl\u0131 u\u00e7aklardaki b\u00fcy\u00fck kazalar\u0131n G-LOC nedeniyle oldu\u011fu kesinlik kazan\u0131nca, k\u0131sa bir s\u00fcre i\u00e7inde g\u00fcncel bir problem haline geldi.<\/p>\n<p><iframe loading=\"lazy\" title=\"Blacking out when pulling 9G in The Centrifuge (9G Blackout \/ GLOC)\" width=\"960\" height=\"720\" src=\"https:\/\/www.youtube.com\/embed\/lK8U8RZyzsM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><strong>G-LOC olan pilotlarla yap\u0131lan \u00fc\u00e7 ankette, en s\u0131k kar\u015f\u0131la\u015f\u0131lan G-LOC nedenleri a\u015fa\u011f\u0131dad\u0131r.<\/strong><br \/>\nAni \u201cG\u201d art\u0131\u015f\u0131<br \/>\nHaz\u0131rl\u0131ks\u0131z olu\u015f<br \/>\nAnti-G suit kullanmama<br \/>\n\u201cG\u201d suit ba\u011flant\u0131s\u0131 olmay\u0131\u015f\u0131<br \/>\nK\u00f6t\u00fc AGSM<br \/>\nAni \u201cG\u201d art\u0131\u015f\u0131<\/p>\n<p>Pozitif G kuvvetinin kan k\u00fctlesini a\u015fa\u011f\u0131 b\u00f6lgelere \u00e7ekerek beyine kan ak\u0131\u015f\u0131n\u0131n yetersiz kalmas\u0131 sonucu, beyin dokular\u0131na oksijen ikmali kesilir ve bu s\u00fcre\u00e7te beyin h\u00fccreleri \u00f6ncelikle k\u00fc\u00e7\u00fck miktardaki oksijen ve enerji rezervlerini bilinci korumak i\u00e7in bir s\u00fcre kullan\u0131rlar.<\/p>\n<p>Bu zaman periyodu &#8220;gizli G-LOC&#8221; olarak tan\u0131mlan\u0131r; belirtisiz olan bu periyot yakla\u015f\u0131k 5 saniye s\u00fcrer. Bu gizli periyodu takiben, beyin oksijensiz kalmaya devam ederse, G-LOC a\u00e7\u0131k olarak ortaya \u00e7\u0131kar.<br \/>\nG-LOC\u2019\u0131n fizyolojik mekanizmas\u0131 tam olarak belli de\u011fildir. G-LOC&#8217;\u0131n potasyum kanal\u0131n\u0131 aktive eden anoksik de\u011fi\u015fimlerle ilgili oldu\u011fu bilinmesine ra\u011fmen, kontrol eden madde kesin olarak bilinmemektedir.<\/p>\n<p><strong>G-LOC&#8217;\u0131n Kalp &#8211; Damar Sistemine Etkileri:<\/strong> G-LOC&#8217;\u0131n kalp-damar sistemine etkisi, basit G stresinin neden oldu\u011fu normal de\u011fi\u015fimlerden farkl\u0131 de\u011fildir. Kalp at\u0131m h\u0131z\u0131 veya ritim bozuklu\u011funun G-LOC olu\u015fumu ile ilgili de\u011fil, G stresi ve psikolojik stresle ilgili oldu\u011fu belirlenmi\u015ftir.<\/p>\n<p>\u0130nsan ve hayvanlarda beyin kan ak\u0131\u015f\u0131n\u0131n farkl\u0131 e\u015fikleri mevcuttur. Beyin kan ak\u0131\u015f\u0131n\u0131n, istirahat seviyesinin % 60&#8217;\u0131 civar\u0131nda bir azalmaya kar\u015f\u0131n, bir &#8220;tampon s\u0131n\u0131r\u0131&#8221; vard\u0131r. Kan ak\u0131\u015f\u0131 bu de\u011ferin alt\u0131na indi\u011finde EEG ve beyin fonksiyonlar\u0131 etkilenir.<\/p>\n<p>Kan ak\u0131\u015f\u0131 azalmakta olsa bile, G-LOC olu\u015fmas\u0131 i\u00e7in kan ak\u0131m\u0131n\u0131n durmas\u0131 \u015fart de\u011fildir. Y\u00fcksek G genellikle \u00e7ok uzun s\u00fcre devam etmez, kan ak\u0131\u015f\u0131n\u0131n en \u00e7ok 15 saniye sonra normale d\u00f6nmesiyle beynin kans\u0131z (oksijensiz) kalma periyodu biter ve doku tahribat\u0131 olmadan normal i\u015flevler yeniden kazan\u0131l\u0131r.<\/p>\n<p><strong>G-LOC BEL\u0130RT\u0130LER\u0130:<\/strong><br \/>\nBilin\u00e7 kayb\u0131 ortaya \u00e7\u0131kt\u0131\u011f\u0131nda t\u00fcm\u00fcyle kas ton\u00fcs\u00fc kaybolur ve b\u00f6ylelikle ba\u015f ve g\u00f6vde bir tarafa do\u011fru y\u0131k\u0131l\u0131r. Pilotun u\u00e7ak \u00fczerindeki kontrol\u00fc tamamen kaybolur.<br \/>\n<strong>G-LOC olu\u015ftuktan sonra g\u00f6zlenen fizyolojik ve psikolojik belirtiler \u015funlard\u0131r:<\/strong><br \/>\n\u0130stemsiz kas kas\u0131lmalar\u0131,<br \/>\nY\u00fcz, kol ve bacaklarda kar\u0131ncalanma,<br \/>\nMotor koordinasyonun bozulmas\u0131,<br \/>\nG-LOC olundu\u011funun fark\u0131nda olmama,<br \/>\nUyku veya uykuya dalma hissi.<\/p>\n<p><strong>G-LOC. Sonras\u0131 Psikolojik Belirtiler :<\/strong><br \/>\nKonf\u00fczyon(\u015fa\u015fk\u0131nl\u0131k) ve y\u00f6nelim bozuklu\u011fu<br \/>\nG-LOC olu\u015funu inkar<br \/>\nG\u00fcvensizlik<br \/>\nKarars\u0131zl\u0131k<br \/>\nMahcubiyet<br \/>\nKi\u015filik \u00e7\u00f6z\u00fclmesi<br \/>\n\u00d6fori (abart\u0131l\u0131 iyilik duyumu)<br \/>\nS\u0131k\u0131nt\u0131, korku<br \/>\nE\u011fitime ve e\u011fitici personele kar\u015f\u0131 negatif tav\u0131r alma<\/p>\n<p>G-LOC ge\u00e7iren pilot, e\u011fer u\u00e7ak d\u00fc\u015fmemi\u015f ise yakla\u015f\u0131k 30 saniye sonra u\u00e7a\u011fa tekrar kumanda edebilir. Fakat u\u00e7ak kritik bir durumda ise pilotun bu durumdan u\u00e7a\u011f\u0131 kurtar\u0131p kurtaramayaca\u011f\u0131 \u015f\u00fcphelidir.<\/p>\n<p>G-LOC ortaya \u00e7\u0131kmadan \u00f6nceki birka\u00e7 saniye i\u00e7inde tam belirlenemeyen bir\u00e7ok fizyolojik ve biyokimyasal de\u011fi\u015fimler olmaktad\u0131r. Ne zaman insanl\u0131k G-LOC&#8217;\u0131n nas\u0131l olu\u015ftu\u011funu tam olarak belirlerse, i\u015fte o zaman belki de y\u00fcksek G&#8217; ye tolerans daha da artt\u0131r\u0131lacak, G-LOC engellenecek veya G-LOC&#8217; dan kurtulma s\u00fcresi k\u0131salt\u0131labilecektir.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jet u\u00e7ak pilotlar\u0131n\u0131 ilgilendiren G-Loc havac\u0131l\u0131kta herkes taraf\u0131ndan merak edilen konulardan biridir. \u0130\u015fte size k\u0131saca G-LOC \u00f6zeti&#8230; Artan G kuvvetlerine ba\u011fl\u0131 olarak beyin kan dola\u015f\u0131m\u0131n\u0131n ani ve kritik d\u00fczeyde azalmas\u0131 sonucu ortaya \u00e7\u0131kan bilin\u00e7 kayb\u0131, &#8220;G &#8211; LOC&#8221; (G &#8211; Induced Loss of Consciousness) olarak tan\u0131mlan\u0131r. Bu fenomen ilk olarak \u0130ngiltere&#8217;de 1.d\u00fcnya sava\u015f\u0131nda &#8220;havada bay\u0131lma&#8221;<\/p>\n","protected":false},"author":2,"featured_media":1315,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[94,2,68,104,80,102,77],"tags":[],"class_list":["post-1314","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aerodinamik","category-guvenlik","category-merak-edilenler","category-pilotaj","category-saglik","category-savas-ucaklari","category-temel-bilgiler"],"_links":{"self":[{"href":"https:\/\/bizimkokpit.com\/index.php\/wp-json\/wp\/v2\/posts\/1314","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bizimkokpit.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bizimkokpit.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bizimkokpit.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bizimkokpit.com\/index.php\/wp-json\/wp\/v2\/comments?post=1314"}],"version-history":[{"count":1,"href":"https:\/\/bizimkokpit.com\/index.php\/wp-json\/wp\/v2\/posts\/1314\/revisions"}],"predecessor-version":[{"id":1316,"href":"https:\/\/bizimkokpit.com\/index.php\/wp-json\/wp\/v2\/posts\/1314\/revisions\/1316"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bizimkokpit.com\/index.php\/wp-json\/wp\/v2\/media\/1315"}],"wp:attachment":[{"href":"https:\/\/bizimkokpit.com\/index.php\/wp-json\/wp\/v2\/media?parent=1314"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bizimkokpit.com\/index.php\/wp-json\/wp\/v2\/categories?post=1314"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bizimkokpit.com\/index.php\/wp-json\/wp\/v2\/tags?post=1314"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}