發展起源
自40年代起冷戰展開,美國對蘇聯國內的情報需求甚切。空軍開始以波音RB-47偵察機闖入蘇聯領空進行高空偵照,當時蘇聯的空防仍然存在漏洞,很多邊界和領空都未有雷達覆蓋,美軍就利用這些空隙進入蘇聯領空進行偵察。到1950年蘇聯的防空政策有非常重大的轉變,開始攻擊一些飛近國界或入侵領空的外國飛機。隨著韓戰於1950年6月爆發,蘇聯的「嚴格防空政策」(severe air defence policy)更延伸到遠東地區。1952年8月,蘇聯戰機闖入日本北海道領空擊落1架美國空軍RB-29偵察機,於蘇聯領空進行高空偵照變得愈來愈危險。
here are a few pic of U2 at Beale AFB in Calif, probably the last unit (9th Reconnaissance Wing ) that still fly U2. Almost all U2s are modified to be trainer with the 2nd hump above the cockpit. One U2 crashed this Oct, the instructor eject and survived, the student did not. The base used to host SR-71 but now host RQ-4 mostly.
附件: 4 U2 Base Aerial view IMG_0975.JPG (2016-12-28 02:53:02, 298.3 KB) / 下載次數 19 https://oursogo.com/forum.php?mod=attachment&aid=MTI4NzU0MzJ8MWExMTkyNWJ8MTc1Mzk5MTE4OHwwfDA%3D
附件: 10 U2T landing at Beale AFB with Chaser car.jpg (2016-12-28 03:17:28, 36.92 KB) / 下載次數 19 https://oursogo.com/forum.php?mod=attachment&aid=MTI4NzU0NDR8MjYzZWYyOTh8MTc1Mzk5MTE4OHwwfDA%3D
附件: [The similar Pave Paws radar near the base, It is also installed in LuoSan, Taiwan] Pave Paws Radar Beale AFB 7th Space 281981.jpg (2016-12-28 03:21:53, 195.47 KB) / 下載次數 17 https://oursogo.com/forum.php?mod=attachment&aid=MTI4NzU0NDV8NGRiYjJhZDJ8MTc1Mzk5MTE4OHwwfDA%3D