1) Penicillin (Fleming, 1928)
2) Low drag mid-wing fuselage mounting
(Corsair gullwing - for prop clearance)
3) swept wing (increased critical Mach
number) Me262 - shift C of G aft by
moving engines (and sweeping wings)
back. Republic was so impressed by
this, they redesigned the F-84 with
swept wings. See also F-86, B707, etc.
Notice anything about these prop tips?
[img]http://hartzellprop.com//wp-content/upl ... iston-.jpg[/img]
Prop blades are after all, very high
speed wings.
Accidental Discoveries of the 20th Century
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ScudRunner-d95
- Posts: 1349
- Joined: Thu Feb 13, 2014 5:08 pm
iflyforpie, thanks for that post every once and a while I learn something.
[img]http://kimdalferes.com/wp-content/uploa ... carson.jpg[/img]
and Colonel, thank god for that penicillin eh! the clap is just not fun!
[img]http://kimdalferes.com/wp-content/uploa ... carson.jpg[/img]
and Colonel, thank god for that penicillin eh! the clap is just not fun!
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mcrit
Vulcanized rubber: A scientist accidentally spilled some sulphur into a beaker of molten raw rubber. When it cooled he discover the result was much superior to natural rubber.
Crazy Glue: The guy that discovered it was worried that he would get fired. He was measuring indices of refraction, (how much a material bends light). When he put the sample in the equipment it unexpectedly glued the plenum shut, ruining a very expensive instrument.
Post it notes: The guys at 3M were trying to make a new type of adhesive. They tried it out on some paper and initially thought it was a failure.
Crazy Glue: The guy that discovered it was worried that he would get fired. He was measuring indices of refraction, (how much a material bends light). When he put the sample in the equipment it unexpectedly glued the plenum shut, ruining a very expensive instrument.
Post it notes: The guys at 3M were trying to make a new type of adhesive. They tried it out on some paper and initially thought it was a failure.
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Slick Goodlin
- Posts: 721
- Joined: Thu Jun 11, 2015 6:46 pm
Laminated glass: a scientific flask that had become internally coated with some form of cellulose was accidentally dropped. The glass shattered but the pieces stayed together.
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Strega
- Posts: 384
- Joined: Tue May 05, 2015 1:43 am
WRT wings... There are two types to fly > mach 1.
Supersonic section "double diamond" as found on the F104/FA-18. and swept wings (F14 is an example ) that always fly subsonic behind the shockwave of the aircraft
- note on most fighters you can estimate the max mach # by looking at the sweep angle.
Sweeping a wing for subsonic flight actually increases the drag of the wing slightly, however as it employs a component of flow normal to its planform, that is slightly less than the airspeed, the Mcrit for the aircraft is increased slightly.
Supersonic section "double diamond" as found on the F104/FA-18. and swept wings (F14 is an example ) that always fly subsonic behind the shockwave of the aircraft
- note on most fighters you can estimate the max mach # by looking at the sweep angle.
Sweeping a wing for subsonic flight actually increases the drag of the wing slightly, however as it employs a component of flow normal to its planform, that is slightly less than the airspeed, the Mcrit for the aircraft is increased slightly.
