About SUGITA CHIKAYOSHI
About 防衛省 技術研究本部
About 防衛技術ジャーナル
About fighter aircraft
About navy
About Japan
About landing gear
About defect
About countermeasure
About endurance test
About failure
About measures against trouble
About Flying object design and structure
About 海軍
About 戦闘機
About 設計
About 技師
About レポート
About 不具合
About 対策