Hey, thanks to Pedraum for the link to this water rocket pumpkin launch. Exploring Dean's site you'll find a number of informative water rocket pages. He borrowed a high speed camera and has an excellent page of slow motion launch movies, while another page provides tips for making your own movies with a regular camera. His hydrogen powered (i.e. combustion) water rockets are not to be missed. My favorite has to be his finless rocket, which is where I snagged this excellent photo.

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