Doing my CFI training this summer. Been studying up on everything, and wanted a good explanation other than reading the textbook. Great explanation, made it very clear!
maybe. I mean but what is the angle of attack vs airspeed do I want my airspeed to remain the same while the aircraft gains altitude or do I want the airspeed to decline as higher altitude is reached. I understand what the difference is but how do you achieve the fastest rate of climb in the shortest time. For example different planes are given a different rate of climb at full speed. is that at a 90' angle of attack losing speed as altitude is lost or constant speed at say 20' ? there was no math to make this determination?
This is the second video I've seen from you, I'm glad to see you have many videos! I'm going to watch them all! Some of my comments might just be to help you with the RU-vid algorithm!
I'm glad to see you liked the video!! Have a look on my channel...I made more than 100 videos (and more to come)..don't hesitate to ask me any questions when watching the rest of the videos! I wish you a great day!👍
It's because of the air density, the lower the density the less air molecules get into your Pitot thus lower IAS indication. Vx and vy are the same at the absolute ceiling because the residual climb grandient is 0 there.
Many thanks for watching and the comment!! The Vx and Vy speeds have to be used after airborne, if you want to shorten your take off distance you can use an higher takeoff flap setting.. Let me know if you have more questions
@@ansonkwok723 Hey, I hope you are doing very well, Many thanks for watching my Video!! This is a very good question, however, I'm not a specialist on Aircraft Manufacturers procedures, so I don't know exactly what they use to determine the Vx and the Vy. My GUESS is that since the Vx and Vy change with multiple factors, such as Power Available (PA), Power Required (PR), weight, altitude and so on, the manufacturers combine flight data (obtained during flight tests) and math formulas in order to determine the Vx and Vy. Normally you can find in the Airplane flight Manual a table with the Vx and Vy tables, in the most sophisticated Aircrafts these speeds are calculated by the FMS using current and updated flight data. Again, this is just my guess, so take it with a grain of salt since I'm not an expert on Aircraft Manufacturer. I wish you a great day!
Does this choice of Vx and Vy affected my take-off performance for example if we takeoff from airport with runway length of 3500 m.If i choose Vx then i need more runway let say 3300 m and if i choose Vy i only need 2600 m and maybe setting thrust N1 or engine power @climb also different for Vx maybe 85% N1 and Vy 93% N1 ?
The Vx and Vy affects your climb performance after take off, if you want to change your TORR you should change the Flap setting for takeoff.. have a great day
One thing i dont understand why is Vy best ROC speed? In a situation where i choose the Vx wont my vertical speed be higher if im pulling a bigger angle? I get that IAS will be lower yes, what confuses me is that in Vx Vertical Speed is higher or should be higher yet Vy is the one that is called Best Rate of Climb speed. Really dont understand.
![Vx vs Vy Climb Speed [Best angle climb vs best rate of climb explained in less than 3 minutes]](/img/logo.svg){kind=logo}
