ほげふが is a user on mastodon.cosmicanimal.jp. You can follow them or interact with them if you have an account anywhere in the fediverse. If you don't, you can sign up here.
ほげふが @hogefuga
Follow

[KSLV2] KSLV-II第1段ロケットエンジンのジンバリング [KARI] nicovideo.jp/watch/sm31073078