近年很多使用升氣球帶著手機／相機衝出地球拍攝的影片，這對廣大的讀者來說已不是新鮮事。外國有位狂熱份子接受了一項 Carmack 100kft Micro Prize 的挑戰，成功把自製的火箭升到 121,000 呎的高空，相等於 99% 地球大氣層的高度，在片中可以看到黑色的太空天氣及地球的曲面。火箭返回地球時，製作者成功依照 GPS 的位置回收火箭，並將升空的片段上載到網上供各位欣賞。各位可進內觀看影片。
來源:
http://ddeville.com/derek/Qu8k.html
分享到 :
最新影片
明明條片話係 80 secs later……
8秒……真係好亂黎
見到佢寫8秒即刻入黎睇…..其實unwire都算多錯字,係唔係應該搵多個人校對一下至出街?
80日環遊世界
80秒升上 23 哩地球頂都唔準確啦,
條片37″開始升到46″先出字幕80Sec. later,
照計應該89sec先到頂…
若果當90秒到大氣層,距離轉換成公里﹝即121,000 ft x 0.3 = 36300 m﹞
換言之,火箭平均速度是36300/90 = 403m/s
那麼,豈不是超音速﹝331.5m/s﹞?
yes, from their website, it plots the velocity , well exceed the sonic barrier. http://ddeville.com/images/Rocket/Qu8k/Qu8k%20RDAS%20Flight%20Data.jpg
actually at their peak reached almost 1000m/s , and you can hear the sonic boom as well
There are definitely a variety of particulars like that to take into consideration. That could be a great point to bring up.
Good post. I be taught something more difficult on different blogs everyday. It will all the time be stimulating to read content material from other writers and follow slightly one thing from their store. I’d prefer to use some with the content on my blog whether or not you don’t mind. Natually I’ll provide you with a link on your internet blog. Thanks for sharing.