"Best Glide Speed"

[fish314]

Tangent:

Hey, turns out it's a real field! I listened to an astrophysics guy give a talk on relativistic fluid mechanics. These situations occur in gas nebulae out there in the cosmos. I don't remember much of it, but if you think about it there are some similarities to "normal" fluid mechanics. In aeronautics the relation of flow speed to the speed of sound tells how information can be transmitted in the fluid through pressure variations. In supersonic flow an object must be in another object's Mach cone to be affected by it. Now we zoom out to the universal scale. Here, the speed of light limits the transmission of information and an object must be in another object's "light cone" (in space-time) to be affected by it.

Also, if I remember correctly the Prandtl-Glauert rule for compressibility has a similar form to the Lorentz transformation in relativity.

Alright, enough nerd for one post.

Hey I liked it!:clap:
I knew about both of those effects separately, but that is the first time that I've heard of them being put together like that. That's REALLY interesting. Makes me wonder if some of the other concepts of fluid mechanics can be applied to light.

 

[Gumps]

I try to show the power pilots I have this talk with the relationship between all of the performance curves relating to the subjects of:

(L/D, Min Sink),
(Vy, Vx),
(max range, Max endurance),
(excess power, excess thrust).

It's the same curve just labeled differently... In a pinch the relating speed(s) is/are usualy only a couple of knots off.

Remember the instructor is preping you for a check ride. There is tons of practical stuff missing from each PTS, don't get bogged down on things that won't help you reach your goal. Don't look the other way either- educate yourself above and beyond but be carefull who you choose to impart your wisdom on.

B.T.W. folks, Trace here made the centerfold of Soaring Magazine this month with a great shot of his Pops making a high speed pass...:beer:

 

[ftyflyboy]

educate yourself above and beyond but be carefull who you choose to impart your wisdom on.

I think I just found a new signature!