anonymous
  • anonymous
Any questions on Aircrafts, Spacecrafts , Aeronautics & Astronautics people?
Physics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
IN MADAGASCAR 3 MOVIE THE PENGUINS SAY THAT IT IS IMPOSSIBLE TO FLY A PLANE MADE OF GOLD IS IT TRUE???CANT WE USE HIGH POWER ENGINES TO FLY IT??
anonymous
  • anonymous
Nice question. Gold, is the most ductile and malleable metal of the earth. Therefore, when you make an airplane of gold, and mount engines on it ( if wing mounted / attached ) then it would make the aircraft's wing sag due to the engine's weight. Also when the engine is at full thrust, and the lift is maximum, the gold wings, under the pressure of lift will bend upwards, thus making it a total disaster. Now let's come to drag. When the airplane will be cruising through air, the drag generated by the surface of contact of the aircraft will again disform it. Moreover gold is heavy and expensive. HOWEVER, EVEN IF YOU HAVE PLENTY OF GOLD, SORRY.....PHYSICS WON'T LET YOU TO HAVE A SAFE FLIGHT ON IT. I hope this answers your question....And thanks for such a nice question.
anonymous
  • anonymous
then why is aluminium...used...i can bend aluminium easily...

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anonymous
  • anonymous
Yes..... even I can too....but you see....it's not aluminum they use..its Duralumin... It consists Copper, Magnesium, Manganese along with Aluminium....
anonymous
  • anonymous
oh..cool...what metal is then used for rockets sir...and have u seen die hard 2...wer mcclane lights a plane using a cigarette lighter..is this plausible?
anonymous
  • anonymous
and sir i have finisd 12th with a score 1162/1200..how can i apply for iisc...
anonymous
  • anonymous
No....its impossible to light an aircraft with a lighter...unless it has been smeared with gasoline and has open fuel tanks... And regarding your career and regarding IISC just go to - http://www.iisc.ernet.in/ug/
anonymous
  • anonymous
And infact I am much younger than you...... Altough I am a researcher https://c3.nasa.gov/dashlink/members/248
anonymous
  • anonymous
why are the wings of the aircraft bend upward in the end?
anonymous
  • anonymous
to eliminate vortices
anonymous
  • anonymous
the high pres under the wings leaks at the tip....which causes a vortex...but i don kno why it is a hindrance
anonymous
  • anonymous
yes but y not simply increse the wing length?
anonymous
  • anonymous
Dear Rdx, Thanks for your question. The wings of modern aircraft have winglets which are upward bent structures as you might have seen. Well let me tell you the physics behind that. When an aircraft travels through air, the pressure on the bottom/ventral side of the wing is much more than the pressure in the upper/dorsal side of the wing ( according to Bernoulli's Principle). This is what creates lift and keeps the airplane climbing through air as a the air tries to move from the ventral side to the dorsal side due to the pressure difference. Now when you come towards the edge of the wing, the air due to the pressure difference also tries to go over the edge wing instead of perpendicularly pushing it. This leads to the formation of a vortex, which is a spirally moving airflow and thus the edge or the end of the wing does not create any lift. For commercial airplanes which are heavy and can have limited wingspan due to hangar storage limitations, aeronautical engineers observed the bird hawk and came up with the idea of a winglet which does not let the air to move over from the side or edge of the wing and thus the vortex which is formed is formed on top of the winglet. Thus the whole wing is able to genrate lift .....which is all very cool..isn't it? An idea provided by mother Nature.
anonymous
  • anonymous
why a vortex is bad???
anonymous
  • anonymous
silly me did no think that it will not be commercially viable to increase length.
anonymous
  • anonymous
in die hard 2 at the climax mcclane lights the plane and the pilots above use it as a beacon light...observe the landing of the first plane thro the fog carefully ..u would c a vortex at the tip....
anonymous
  • anonymous
Votex my friends is spirally moving airflow generally observed at the edge of the wing...It is bad because it being a spiral moving airflow exerts pressure on both the top/dorsal and bottom/ventral side of a wing. Thus making net lift zero.
anonymous
  • anonymous
cool...how can i become a res member in nasa...?

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