Thruster88 Posted February 18 Posted February 18 Interesting point in the vid, "why dont manufacturers just limit the elevator travel so it can not reach stalling stick position". I believe this was done with the Ercoupe. 1 1
BrendAn Posted February 18 Author Posted February 18 1 hour ago, Thruster88 said: Interesting point in the vid, "why dont manufacturers just limit the elevator travel so it can not reach stalling stick position". I believe this was done with the Ercoupe. i really like the way phil explains things. great series of videos. how would you go when flaring on touchdown if you limit the travel. would it still be the same. 1
facthunter Posted February 18 Posted February 18 How much elevator you Need to flare depends on the C of G, and with some 3 Pointers the Plane is stalled Purposely. Stick stall Position is only for One configuration at a time. Nev 1 1 1
facthunter Posted February 19 Posted February 19 Limiting the elevator authority is like having your hands tied in case you do something wrong. The Nut on the end of the stick is the Problem. If the plane is nose heavy you can run out of Back stick in the flare..Nev 1 1 1
facthunter Posted February 21 Posted February 21 A nose heavy Plane stalls at a higher airspeed and will use more fuel . Discuss? Nev
facthunter Posted February 21 Posted February 21 It's a BAK question every pilot should know the answer to.. Nev
Thruster88 Posted February 21 Posted February 21 2 hours ago, facthunter said: A nose heavy Plane stalls at a higher airspeed and will use more fuel . Discuss? Nev Horizontal stabilizer has to push down more than usual so more lift on main wing required so more drag from wing and tail, more load on wing results in higher stall speed.
facthunter Posted February 21 Posted February 21 (edited) Spot on. Thanks. You get the Cigar. Nev Edited February 21 by facthunter
rgmwa Posted February 21 Posted February 21 ... and more power required to overcome drag so more fuel used. 1 1
facthunter Posted February 22 Posted February 22 Why is it better to fly faster if you are Heavy? Nev
BrendAn Posted February 22 Author Posted February 22 30 minutes ago, facthunter said: Why is it better to fly faster if you are Heavy? Nev More airflow equals more lift.
BrendAn Posted February 22 Author Posted February 22 9 minutes ago, facthunter said: Keep going.. N Well your stall speed would be higher so you land faster. That's all I can think of without looking it up😁
rgmwa Posted February 22 Posted February 22 Flying faster will create the required lift at a reduced angle of attack and reduce the associated drag on the wing. 1 2
facthunter Posted February 22 Posted February 22 Getting there. Let's see if we can get a bit more out of this because it's worth it. Thanks for participating. Nev
BrendAn Posted February 22 Author Posted February 22 21 minutes ago, rgmwa said: Flying faster will create the required lift at a reduced angle of attack and reduce the associated drag on the wing. Of course,thanks . And also less time in the air means fuel savings too I guess.
BrendAn Posted February 22 Author Posted February 22 18 minutes ago, facthunter said: Getting there. Let's see if we can get a bit more out of this because it's worth it. Thanks for participating. Nev It is worth it for sure. This is the sort of stuff that can really help us student pilots
rgmwa Posted February 22 Posted February 22 (edited) Flying faster also increases form drag and the most efficient speed will be the speed at which the combined parasitic and form drag is lowest. I wasn't sure that you can say that flying faster will always be more efficient except that flying faster will get you to where you're going quicker and that's probably more efficient (especially if you can go `downhill' all the way and use gravity instead of engine power). Edited February 22 by rgmwa 1
Blueadventures Posted February 22 Posted February 22 Too much speed and you can't land, may get wheels on deck but won't stop, if speed kept up. There is a sweet speed spot area. 1
facthunter Posted February 22 Posted February 22 Every aerofoil has a Cl max and that will be achieved at a particular Angle of Attack. Lets just say it's 6 degrees from the zero lift angle (which may be negative) If you are NOT at the Best angle you are Losing efficiency. If the angle is More than optimum it becomes unstable. If less Not so. You adjust by adding Power or flying at a lower Level. Many tend to fly too high to get a claim on the higher cruise level. Nev 2
facthunter Posted February 22 Posted February 22 Parasite drag decreases in thinner air. Most of the Drag relates to lift Generation. These are very high wing loaded aircraft and have a surprisingly good L/D ratio. General principles apply to ALL planes. A lot of planes have too much wing at higher speeds at lower levels. Nev 1
BrendAn Posted February 22 Author Posted February 22 https://youtu.be/HcaIIJFkDiI?si=Veb_XYejZp5jMQFX 2 1
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