A compilation of some gliding fun all over South Africa in 2022/2023. Featuring Potch, Tswalu, Worcester, Magalies and more. Credit to Tian du Preez for the epic edit!
This is what I absolutely love about flying! Sometimes the feeling cannot be explained with words but this great editing lets my mind and heart feel like I am there and flying like the greatest bird! 🦅⛅❤️
03:17 I cannot unsee the “you don’t need it now” thing that you did with the water dumping ahahah. Beautiful clips, beautiful music, beautiful music. Thank you for sharing this with us.
@@gpaull2That's right! He made a great job of editing the clips and put all these clips together. Nice video but what I criticized is that he replaced the original audio with music.
NICE, VERY NICE! So after a low pass like that, do you have to set up for a landing ( after spending all of that energy). What is L/D for a ship like that? I used to fly a "LARK" some 25 years ago. Then a hail storm ( came through in the middle of the night) & ended the most fun I ever had!
There are other videos on youtube of people doing low passes like that then circling around and doing two more... or catching a thermal and ascending back up to 6000 feet. Modern sailplanes are very efficient, with L/D ratios of >50 typically. For example, one of the sailplanes here is a JS1 Revelation which has a L/D of 53. It also has jet assist to get back up if you don't find a thermal.
Excellent footage & nice editing. But as much as I like U2, drowning out the awe-inspiring whoosh of those high-speed passes with their (or ANYone's) music is simply a travesty. It is not absolutely mandatory to contaminate a video with a music bed!
It's the energy they have. A sail plane going "slowly" at a higher height and a sail plane going fast at a lower height can have the same energy. The pilot can swap potential energy (gravity) for kinetic energy (speed) by diving, and then swap them back again by climbing again to (almost, due to inefficiencies due to friction) the same height as before.
Conversion of kinetic energy into lift. Those low passes burn a lot of energy, though. Mostly done right before landing checklist, because it's majorly uncool to just pull the brakes. 😉
@@harfenspieler lift is the force applied to counteract the force of gravity. It costs energy (kinetic) to produce lift, through friction. If enough lift is produced, kinetic energy may be traded for potential energy.
I saw Reinhard Haggenmüller doing the inverted low pass a few times many years ago in Austria ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-r4pNkq5lQ5Q.html
I cannot understand why the wings are so narrow? If they we´re much broader the gliders should be able to stay much longer time in the air and fly much longer distance.
It's because long, narrow, thin wings produce less drag for a given amount of lift than short, wide, thick wings. Induced drag (drag created as a result of generating lift) is caused mostly by spanwise flow on the wing creating vortexes at the wingtips. Making the wings long minimizes that effect relative to the amount of lift generated.
