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#11
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Near Vertical Takeoff
On Sun, 14 Jun 2015 20:01:05 -0600, Dan Marotta wrote:
Wow!!! I'd love to try that! On 6/14/2015 7:36 PM, GM wrote: I can do that in my glider, though not for quite as long... Yes you can! Do a winch launch on one of those specially modified European winches that use over 11,000ft of line, hold that climb for 2 minutes and end up at over 4,500ft. I bet the jet cannot do that! Uli Here's a video: https://www.youtube.com/watch?v=-VlRd9-wxQI Note that the instruments are metric: climb rate in m/s, height in m, airspeed in kph. -- martin@ | Martin Gregorie gregorie. | Essex, UK org | |
#12
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Near Vertical Takeoff
Released at 1390 meters, 4560 feet!
Mike |
#13
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Near Vertical Takeoff
I like the outside loop!
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#14
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Near Vertical Takeoff
On 15/06/2015 11:36, GM wrote:
I can do that in my glider, though not for quite as long... Yes you can! Do a winch launch on one of those specially modified European winches that use over 11,000ft of line, hold that climb for 2 minutes and end up at over 4,500ft. I bet the jet cannot do that! Uli What - 2250fpm? Most modern twinjets do that easily. A full thrust takeoff in an empty 747SP cracks 4000fpm. Even if you allow 30 seconds for the takeoff roll - about right at light weights - 4500 feet two minutes after brake release would be easy. OTOH, I'm stunned at the lack of scepticism about the video. The climb will be nowhere near vertical. 150kts indicated is 15000fpm if vertical. It's nowhere near that. The climb is likely about 5000fpm - 50kts in glider-speak. That's about 30 deg climb angle. Perspective foreshortening due to long focal length lenses is a wonderful thing. That's how all those aeroplanes survive 60 deg drift landings in HKG on those Youtube videos. GC |
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