Why was the Saturn V rocket painted black and white?

Why was the Saturn V rocket painted black and white?
There's a pretty cool answer to this one... it all boils down to temperature.





The Saturn V is an iconic rocket, and its black and white paint scheme is pretty
easily recognizable to even casual space fans. And like its technological
heritage, we can trace its stylistic roots to WWII Germany as well.


The Saturn V was painted predominantly white to keep the craft cool as it
sat on the launch pad in the hot Florida sun. Holding down the rocket’s body
temperature reduced fuel boil-off and improved overall safety.
The black markings were to help ground cameras with roll measurements
as the craft rotated around its vertical axis on lift-off.





The Saturn V’s iconic black and white paint scheme is a remnant of its German
roots.  When Wernher von Braun and his rocket engineer colleagues tested
early prototypes of the Vergentungswaffe Zwei or V2, they painted a large
black and white checkered pattern on its skin. This helped them see any roll
the rocket gained around its vertical axis during launch.

Armed V2s that fell on London towards the end of the Second World
War were painted with a camouflage so the Allies would a harder time
finding them. (The V2).





The first four Saturn I flights, SA-1 through SA-4, featured alternating black
and white stripes on the first stage, a checkered pattern on the interstage,
and an all-white second stage.

The problem with this scheme soon arose. The fuel tanks under the black
areas registered heat spikes as the paint absorbed the heat of the Sun.
But these black stripes did change from launch to launch. Rather, the upper
stages changes. SA-5 launched with a black nose cone while SA-6 and
SA-7 both featured a black forward interstage. Later launched saw the
upper portion of the rocket painted entirely white.


Saturn IB.

Following the Saturn I was the Saturn IB. The first rockets that launched
AS-201 and AS-202 were white with vertical black stripes on the first stage.
Subsequent Saturn Is followed this scheme with the addition of a black
interstage, until the Skylab program. For these launches, the first stage
was painted entirely white to minimize heat absorption from the Sun.


Which brings us to the Saturn V. The first Saturn V that rolled out of the
Vehicle Assembly Building in 1966 wasn’t a flight article, it was a dummy
rocket designed to check out the launch and mating facilities as well as
verify checkout procedures while also training crews in dealing with the
mammoth rocket.




It was the Apollo-Saturn 500F. This rocket was white with black stripes
rising about a third of the way up the first stage and continued on the upper
part of the stage and onto the aft interstage, ending at a black ring. It also
had a black and white checkered pattern on the upper interstage and a
black instrument unit.

But that black ring caused a lot of problems. The paint absorbed enough heat from the Sun that the fuel tanks underneath got dangerously hot. The upper upper part of the black stripes and the band on the first stage was painted over in white on all subsequent Saturn Vs.


So the Saturn V’s iconic paint scheme was always a practical consideration.
That it looks amazing was sort of a happy accident.

Watch video below why Saturn V was painted black and white.


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