Just adding to Bob's comments. If the aircraft's directional stability is stronger then its roll stability, the aircraft will be spirally unstable ...
Here is a link you might find helpful!
Here is a video that will answer your question. Red indicates a higher static pressure and blue indicates a lower static pressure. Ignore the end ...
This post raises a question that has always evaded my understanding. If we were to take Bernoulli's theorem (below) at face value, an increase in s...
This chart might help. [i]Note: For this wing, the stall occurs at an AoA of 19.8 degrees and the L/D max occurs at an AoA of 5.5 degrees.[/i] [co...
Here is a video link that might get you thinking: [attachment=1660]Drag Curve.jpg[/attachment]
It's hard to see what is going on, but I think your problem lies at the very start - ie PH and Temp. You might also want to read "note 1" at the bo...
This might help! You friend is correct; the answer is "b" [attachment=1655]Drag Curve.jpg[/attachment]
I would have selected answer "C" or "E" A 5 kt quartering wind will give a crosswind of 3 kts. This will anchor the upwind vortex over the runway. ...
When you break visual at 1150' with 3km vis, chances are that you will not see the runway; the SI approach requires a vis of 5km. At this point you...
This graph from the FAA's, "Pilot's Handbook of Aeronautical Knowledge", may help you put it all together. [i]Note: The AoA for the best L/D ratio ...
The question asks for a speed to "cover the greatest possible [u]time[/u] per liter of fuel consumed". In other words, the question is asking for the ...
Condition stability is as you described. The atmosphere is stable if the rising air parcel is dry but unstable if the rising air parcel is saturated. ...
First off, the TAF syntax given in the exercise is out of date. "PROB20 TEMPO 0306" used to mean TEMPO from 03z to 06z. Today the correct syntax w...
This might help! [attachment=1593]Motion.jpg[/attachment]