Lift - comments?

[AKiss20]

One thing to note is that you treat the concept of circulation as if it was some form of separate/independent explanation from streamline curvature/flow turning. They aren’t, they are inherently linked. The vorticity equation is simply the curl of the momentum equation.

Much like pressure gradients and velocity gradients are two sides of the same coin, vorticity (and thus circulation) and streamline curvature are as well.

That was perhaps not your intent but it is how it read to me!

 

[Capt. Geoffrey Thorpe]

A tangential question, what does a student pilot do differently by understanding how lift works?

Nothing much that I am aware of.

 

[Dan Thomas]

My reference says outside the atmosphere there is no lift and no drag: those are aerodynamic (requiring air) forces it says. So if you're in an atmosphere you must have gravity otherwise the air would escape. Quibbling over terms I know, but words are important.

So what would a Guillows balsa glider do in the Space Station? I could see stability problems, at least.

 

[Dana]

So what would a Guillows balsa glider do in the Space Station? I could see stability problems, at least.

If trimmed for level flight or steady glide on Earth it'd do a loop in zero g. To fly a straight path you'd trim it the same as if flying a zero-g arc under normal gravity.

 

[Piperonca]

Something similar to this, probably:

 

[dmspilot]

A tangential question, what does a student pilot do differently by understanding how lift works?

"Proper" means "suitable", not necessarily "thorough and scientifically accurate." A student with proper understanding of lift will more readily understand other aspects of aerodynamics.

 

[NordicDave]

Great thread, but I thought it worked like this:

 

[WDD]

 

[Half Fast]

Physics schmysics.

Planes fly by the Peter Principle. They rise until they reach the level where they're not competent to go higher.

 

[Checkout_my_Six]

Money causes lift......

 

[Southpaw]

as a 5-time college dropout,

Ah , something I can relate to.

 

[Capt. Geoffrey Thorpe]

I am less concerned about the true nature of lift than I am about the proper way to explain it to a student pilot. How would you explain lift to a student (er, learner) on their first or second lesson?

I had forgotten about this one: http://www.aviation-history.com/theory/lift.htm

 

[texasclouds]

Bernoulli, Newton, and PFM…pure friggin magic