五千年(敝帚自珍)

主题:【原创】追逐春天 -- 晨枫

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家园 Thank you for sharing such nice

trip experience and wonderful photos :) I got some new knowledge about American helicopters thanks to your introduction!

By the way, "Horton飞翼" did plan to use "三合板" from design, since, you know, Germans didn't have much aluminum around 1944, and "Horton飞翼" matured too late to enjoy the highest priority for production. The glue developed for airplane "三合板" is indeed awesome!

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