I find it a little confusing when we mix talking about “WE DO NOT need an alternate if” with clauses from when we say “WE NEED an alternate if" For the first one, “we do not need and alternate if” both conditions need to be met according to the FARs wording, weather is at or above the 1-2-3 rule “AND” the destination airport has an available IAP. On the other side, when “we need an alternate if” only one condition on the negatives needs to be met, weather is below the 1-2-3 rule “OR” the destination airport does not have an IAP available. Same thing, looked at from the other side. What I find confusing is when we say, “weather at least 1-2-3….”OR” your destination does not have an IAP…” , that’s one condition to not require an alternate, and one condition to require an alternate, plus the conjunction or, implies only one must be met.
Would I be correct in saying that the CL moves forward with an increase in AOA due to the disruption of smooth airflow at the trailing edge as we increase AOA?
Answering the question put off in the video: Regarding Best Glide use L/Dmax if no wind, L/Dmax is both Vx and Max E in jets and is still air best range in propellers. Regarding minimum sink aka most glide time, if you have a glide polar, it is the top of the speed vs sink rate graph. If you don’t have it, use 75 percent L/Dmax. For a propeller, your Vx is near this and your min power required hence your Max E is this. Published speeds are max gross speeds though AOAs for best glide and max glide time are constant and useful any weight if known.
L/Dmax is not the same as min power required, it is forward of or right of such on the tangent from origin and, for propellers, Vy will be near it though unrelated to it. Ideal Vy would be at min power but real with inefficiencies pushes it up. Your reference book tells you these. Time 29:20 or so. L/Dmax is not the lowest point on power required.
Can we differentiate between ‘climb’ and ‘zoom’ as well as ‘descent’ and ‘dive’ please. KE-PE relationships are zoom dive ones while CE-PE is climb descent while CE-KE is accel decel. See Medium “Improve your Landings with AOA and Power Techniques.”
Can you use AOA for Vx and/or Vy? If yes, what are the conditions in which you could use AOA for such? It is not as easy as with Max E and Max R as in most altitudes, you can ignore thrust and power requirements while level as you have excess. Remember also in your answer that Vx and Vy meet at ceiling but so too do Max E and Max R.
yay! boldmethod is back! I have no idea you guys does YT shorts! I should take a look! But I just wanted to say I really like your older video! So I hope these new video will make a great comeback! Thanks for your teaching!
I think spanwise flow should be showed on leading edge of the wing, that would show in intuition how it works. (and arrows from fuselage should be first: relative wind, spanwise flow on leading edge and chord line of wing connecting tips of spanwise flow and relative wind)
Hi so from my understanding, is the Blodmethod logo of a bow wave? And also what's the name of that symphony at the beginning...I love listening to it rite before learning from u guys at boldmethod...I swear if I had it as a ring tone I'd always have to call back once it's done lol😂
Never explains 50 degrees rich of peak evplains it’s good but what does it look like and how to get there the seminar is for people already experienced not good for beginners
CHT is not a lagging indicator of cylinder temperature. It's the most reliable indicator of the health of your cylinder. EGT gauge provides much slower feedback. He is explaining things all backwards. Running the engine at ROP will actually build up more pressure within the cylinders and increase CHT and you will end up hurting the longevity of your engine. You can never run hot by running your engine at LOP.
There was an episode of The Flash where he ran around a track. When he reached the speed of sound they had this loud boom and said, "he just went faster than sound". But if he was running on a track the booms would be hitting them A LOT. That was kind of funny, I wonder how many science folks picked up on that.
As a CFII here in Grand Junction, I can absolutely agree with this assessment! Get out there early and get it done before it's crazy hot! Climb performance is reduced greatly and it's difficult to maintain healthy CHT.
