The DB-LK (Dahl'niy Bombardirovshchik-LK – long-range bomber–flying wing) was a bomber aircraft designed and built in the USSR in 1939. Viktor Nikolayevich Belyayev had an illustrious early career with TsAGI, AVIAVnito, Aeroflot, OMOS, AGOS, KOSOS and the Tupolev OKB.

2023年2月7日 · The DSB-LK stands for (and translates to) “Long-Range Strategic Bomber Flying Wing”. Its designer, Aleksandr Moskalyov, initially aimed for the aircraft to reach a maximum speed of Mach 2 to Mach 4. However, he also once planned on combining ram jets and afterburning turbojets to further push the speed beyond Mach 4 – aka hypersonic.

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2022年7月23日 · Today we’re going over Mach 5 with DSB-LK bomber. Let’s face it, late 50s and 60s are probably the coolest period in cold war aviation history. Engineers on both sides of the iron curtain were being given a carte blanche to create the ultimate weapon which could carry nuclear bombs to the targets on the other side.

Victor Nikolayevich Belyayev, March 1896 – July 1953, began working for the Department of the Marine Experimental Aircraft Construction, OMOS, in 1925, where he gained his first experience in aircraft design. In the following years, he worked for the Central Aerohydrodynamic Institute, TsAGl, and Tupolev.

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2019年12月25日 · 通常在Linux/Unix平台下，在$ORACLE_HOME/dbs目录下，还会存在另外一个文件，该文件命名规则为lk<ORACLE_SID>，lk指lock，该文件在数据库启动时创建，用于操作系统对数据库的锁定。

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在 MOS 中，我们找到了一些关于 lk 文件的信息。 大部分和 lk 文件相关的信息都是和启动数据库时候独占文件有关的。 出现最多的问题就是在启动过程中遭遇到 ORA-01102 错误。

2018年7月24日 · lk说明DATABASE 已经是MOUNT状态了,不用再次MOUNT.当 DATABASE 被UNMOUNT 后会被自动删除,如果DATABASE没有MOUNT,却依然存在这个问题，只有手工将其删除。 1. 进入dbs文件夹. 2. 查看lk文件（本机为lkORCL文件） 3. 查看使用 lkORCL 文件的进程和用户。 -u 为进程号后圆括号中的本地进程提供登录名. 4. 杀死这些正在访问lkORCL的进程 -k 杀死这些正在访问这些文件的进程. 5. 重复第3步，确认进程都被杀死. 6.重启数据库。 文章浏览阅 …