Heres the short answer...

[Excessive Force]

very very short....God has spoken (http://www.youtube.com/watch?v=aX7-_g5LaiQ)

[Nord]

lol

[EAZYKILLER2006]

i told you it was all about size
:confused: :idea:

[DeltaSigBoater]

There's no forward thrust being produced by the airplane

[maxwedge]

Your god is a dumbass:D
http://www.youtube.com/watch?v=-EopVDgSPAk

[EAZYKILLER2006]

by the look of the size of that the head, does not look like it will get up and thrust
tommy i am with you
it aint getting up, but for the sake of argument... if it does get up it aint staying up...
so whats the point?

[Riverkid]

Your god is a dumbass:D
http://www.youtube.com/watch?v=-EopVDgSPAk
painful to watch...:)

[Sleeper CP]

Your god is a dumbass:D
http://www.youtube.com/watch?v=-EopVDgSPAk
Wedge,
Power to weight ratio. Model engine airplane can also do vertical climbs from 10 mph and accelerate straight up. Prop planes can't do that in the real world. They can climb vertical as long as they have airspeed, but sooner or later they run out of airspeed and fall to earth.
Jets, and there are very few of them that can climb vertical can do it because they have a power to weight ratio greater than 1:1.
Airliner's that weigh 150,00 to 250,000 lbs and have a power to weight ratio of .5:1 I'm not sure that they can do that. It would have to be to perfect scale in all aspects.
Just my.02
Sleeper CP