The amount of power that’s necessary to takeoff (get off the ground) is different than the amount of power to keep climbing once you’re off the ground. Easy example to give is if you have a really short runway, you may need a lot of power to takeoff because you need to accelerate fast enough to get to takeoff speed before the runway runs out. Usually, takeoff power is higher than climb thrust, but in situations where the takeoff power is really low, the climb thrust is higher. Climb thrust provides a more optimal power setting that balances fuel efficiency and wear-and-tear on the engine over the long run. Throughout the climb, you may hear the thrust cutting back and increasing again because the aircraft often doesn’t climb straight to its cruising altitude - it may climb and level off at 10,000 feet for a little bit, then go up to 18,000, then finally to cruising. Just depends on the exact departure procedures that are used and what ATC directs the pilots to do.
Best sound in aviation is at 35 seconds when the GEs fire up and the whole fuselage vibrates!
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I love the sights and sounds of a jet aircraft. Love to watch them takeoff and land.
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Those engines are monstrous
Never fails to impress
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Dulles, My airport!
Cool!
Imagine showing this to a peasant from the medieval times who was hung for stealing a loaf of bread
Best sound in Aviation 👍
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You filmed this at the perfect time of day. The city night is beautiful.
Great video! Love the GE90-115B
Probably my favorite engine
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What might be the reason for all the engine thrusts and climbing?
The amount of power that’s necessary to takeoff (get off the ground) is different than the amount of power to keep climbing once you’re off the ground. Easy example to give is if you have a really short runway, you may need a lot of power to takeoff because you need to accelerate fast enough to get to takeoff speed before the runway runs out. Usually, takeoff power is higher than climb thrust, but in situations where the takeoff power is really low, the climb thrust is higher. Climb thrust provides a more optimal power setting that balances fuel efficiency and wear-and-tear on the engine over the long run. Throughout the climb, you may hear the thrust cutting back and increasing again because the aircraft often doesn’t climb straight to its cruising altitude - it may climb and level off at 10,000 feet for a little bit, then go up to 18,000, then finally to cruising. Just depends on the exact departure procedures that are used and what ATC directs the pilots to do.
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Okay