Why are airplanes white?? | हवाई जहाज सफेद क्यों हैं ??

Commercial planes are generally white because of these reasons: 

       

  White Color provides a thermal advantage,it helps in easier inspection of crack and dents on the fuselage and is also cost effective. White planes also tend to have a higher resale value than colored ones.

          While Gazing at an airplane passing thousands of feet overhead or when you are just about to board a flight at the airport have you ever noticed that the vast majority of airplanes are white? sure some have stripes,decorations and names in different color,but the base color behind those add-ones is almost always white.it seems a bit strange but is there a real reason for it?

Thermal Advantage:

          The color white is a terrific reflector of sunlight and reflects almost all the light that falls on it,unlike other colors,which absorb some of the light.

why do you think white clots are recommended for summers?

          If you paint your airplane in a color other than white, it will absorb sunlight and heat up the body of the airplane which is something you want to avoid. White on the other hand reflects that sunlight and avoids the gradual build-up of heat on the plane.This is a good thing not only when the airplane is in flight but also when it's parked on the runway because it takes less time to coll down after sitting on the ground in a hot, sunny environment. In fact,some planes actually 'need' to have a coating of white paint in order to guarantee a structurally sound flying machine.

Easier inspection of cracks and dents on the fuselage:

          Airplanes are regularly inspected for cracks, dents and any other form of surface damage (for obvious safety reasons).Nothing Works better than white when it comes to spotting a crack on the surface as the crack is almost always darker than white.

          Additionally white also accentuates corrosion marks and oil leak sports (as they leave dark colored trail).plus a white plane is easier to sport (visually) in the event of a crash or any other mishap, especially at night or in a massive body of water.

Less 'Scientific'Factors:

          Not every reason behind the this obsession with planes is 'scientific',so to speak. There are a few. other reasons too,which can't be ignored.

Painting is Expensive !

          In pecuniary terms, painting an airplane is not like painting a fence.It requires a considerable investment both in terms of money. manpower and time.painting a regular boeing airbus takes anywhere between on your budget. plus more paint on the fuselage means more overall weight (you didn't think that massive amount of paint was weightless did you?),which effectively translates to higher operating costs. As an airline company you would want to avoid that as much as possible.

Colored airplanes have lower resale value:

          Now if you have a colored airplane (parked in your own private hanger)and you want to sell it,you should expect to make a little less than if it was a white airplane. You see the end goal of an airplane

          you see,the end of an goals of an airlines company is to minimize the cost as much as possible.Buying a colored airplane would mean that they would like have to paint it white, for the various reasons mentioned above. Hence, it makes perfect sense that the company would pay you a lower price for your fancy colored airplanes.

White doesn't fade:

          When flying at high altitudes completely exposed to various atmospheric conditions,colored airplanes tend to fade and thus requires a lot of paint jobs to maintain their aesthetic appeal. a white colored airplanes the other hand doesn't appear significantly different even after spending a considerable amount of time in the air.

If it ain't broke don't fix it!

          Finally .if there's no problem with the exiting white color then why bother fixing it at all? As we've clearly shown the white color does have its benefits both scientific and economical.

However some airline companies do have multi colored airlines like this one here: 

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