Originally shared by +Yonatan Zunger Things stay in orbit not by being high up, but by moving fast enough that they continually fall towards the ground and miss. Draw a line between yourself and the center of the Earth; gravity is pulling you along that line. Point your nose perpendicular to that line, and go: your normal straight-line motion is moving you away from the Earth. The art of orbiting is simply the art of keeping those two things in balance, so that you're moving so quickly through space that you're losing altitude through falling at the same speed that you're gaining it through hurtling. Of course, you have to be going kind of fast for this to work. The ISS travels at a steady speed of 7.6km (4.76 miles) per second. This is why spacecraft don't simply fly straight up; they fly up about 26,000' to get out of the thickest part of the air, then turn 90° and thrust for speed. (This post talks more about why that makes more sense than taking off horizontally like an airplane: https://plus.google.com/+YonatanZunger/posts/VsYyUDxFUDr) It probably won't surprise you that when you're flying at this speed, running into things is not a good […]
Do drones count as planes to you? Or are true planes only flown by sitting in them? In Album 9/5/15
Originally shared by +Olav de With Beriev Be-200 https://en.wikipedia.org/wiki/Beriev_Be-200
Ah the worlds laziest device….
Nice work +Olav de With Originally shared by +Olav de With Russia / MAKS 2015Sukhoi Su-35
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