Factors Affecting V1 Speeds

[@annxttelee]

thank you for this video, very useful!

[@f4212]

My pleasure. In case you have any other question please let me know ya.

[@gigibostan]

Hey, thanks for the explanation! I do have a question though: At V1, we need to have enough runway available in order to stop the aircraft. However, at V1, we also need to have sufficient runway available in order to reach screen height by the end of it, in case we continue. In this case, the heavier the aircraft, the lower the V1, to stop, makes sense. But if we continue, the heavier the aircraft, the lower V1 doesn't make sense, because it will accelerate slower(it's heavier), and it will need more time/distance to accelerate(low V1), hence, we might not have enough runway. Can you please explain? Thanks!

[@f4212]

Hi Tibi. Thanks for dropping by. First thing first.. your logic is correct. The heavier the aircraft..the lower is the V1( for longer stopping distance). However as it becomes heavier we use more thrust as required to satisfy the legal climb gradient requirements. Most airliners (99.99%) do not take off using maximum thrust. Just imagine driving a car.. we almost never start driving off pressing the accelerator until max RPM right? We use just enough power so that it gives passenger comfort and also saves the engine from heavy wear and tear.

[@PengembaraBiruMinecraft]

Nice video dude 👍

[@f4212]

Thank you Sir.

[@ebelejacinta7474]

Thanks for the video

[@flyingbarbarian1]

Great video, may I ask do you still fly a330’s?

[@f4212]

I used to fly A320 A330 & A340. But those are more than 10 years ago now.

[@flyingbarbarian1]

@@f4212 So you’re flying something diffrent if I Can ask?

[@flyingbarbarian1]

@@f4212 oh i see you’re flying the 787.

[@f4212]

@@flyingbarbarian1 Hi. So sorry I overlooked your question earlier. I fly both B777 and B787 right now. Thanks for watching ya. Happy New Year.