tag:blogger.com,1999:blog-830183408664103575.post9080821920121424800..comments2023-12-16T12:56:06.078-05:00Comments on NEMO Equipment Blog: Flying with Fillo: a Physics LessonSuzannehttp://www.blogger.com/profile/10129256890893224062noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-830183408664103575.post-7748845917177778992010-10-28T09:53:26.658-04:002010-10-28T09:53:26.658-04:00Since the Denver airport is roughly 5400 ft (5,431...Since the Denver airport is roughly 5400 ft (5,431 ft if you want to be a bit more precise), the ambient air pressure as the plane is sitting on the runway is about 12.2 psi (or 0.83 atm). If we know that the plane is maintained at about 10.9 psi at 39,000 ft, the pillow will now be at 2.8 psi when you're flying at level where you can turn on your electronic devices and take off your seatbelt. <br /><br />Nice work Ian (as we learned in school, showing your process is always a good thing). The logic is correct, although we had slightly different starting pressures for the Denver airport. Ian, can you send your address to NEMO customer service as I will send you out some stickers?<br /><br />I'll try to post another fun problem like this soon.Conniehttps://www.blogger.com/profile/02300924178375673173noreply@blogger.comtag:blogger.com,1999:blog-830183408664103575.post-46740816940380688992010-10-22T14:34:26.894-04:002010-10-22T14:34:26.894-04:00Hi Connie,
1.83 atm?
Do I win?
Fun post.Hi Connie,<br />1.83 atm?<br /><br />Do I win?<br /><br />Fun post.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-830183408664103575.post-81971816529566796462010-10-22T12:47:11.704-04:002010-10-22T12:47:11.704-04:00if you accept that for every 1,000 feet you go up ...if you accept that for every 1,000 feet you go up the air pressure drops 4%, at the "mile high" airport in Denver (at 5,400 feet) the air pressure is approx. 3.4 psi lower than sea level (being 11.3). Using this formula, the air pressure at 6,900 feet is 10.65. Throughout the flight, the air pressure is dropping .65 psi making the fillo go from 1.5 (you're still inflating it to the same pressure regardless of your relative height) psi to 2.15 psi -- approximately of course! :)Ianhttp://www.thedustycamel.orgnoreply@blogger.com