1.5M ratings
277k ratings

See, that’s what the app is perfect for.

Sounds perfect Wahhhh, I don’t wanna
pipco
yuria

wolgalp:

Russian pilots have created an angel in the sky. Glory to Russia!!! http://wolgalp.ru/

Source: wolgalp

More you might like

mr-moai
fuckyeahphysica

The Vapor Cone.

A vapor cone, also known as shock collar or shock egg, is a visible cloud of condensed water which can sometimes form around an object. A vapor cone is typically observed as an aircraft, or object, flying at Transonic speeds. ( slightly slower than the speed of sound) 

The Pressure - Temperature dependence.

As the aircraft approaches the speed of sound, the air pressure around the object drops, and thereby the air temperature drops. If the temperature drops below the dew point, water in the atmosphere condenses to form a cloud in the shape of the shockwave.

Red Bull Stratos and the Vapor Cone.

Remember that epic jump where Felix Baumgartner, as a part of the Red Bull Stratos project broke the sound barrier ( reached Mach 1.25 ) during his descent? But why weren’t vapor cones seen around Felix’s body? Or were they?

image

Vapor cones are formed only near the ground, where plenty of wet air persists. But when Felix broke the sound barrier, there was no wet air that surrounded him that would enable the formation of Vapor cones.

Have a Good day!

PC: twistedsifter

fuckyeahphysica

This is a Bonus post from the series. It‘s purpose is primarily to bring out the essence of pressure-temperature dependence that allows us visualize flow in a F1 car

Source: fuckyeahphysica
prodigalboys
fuckyeahphysica

A vortex portal to another universe.

This is known as wingtip vortex. It is a ramification of the design of the wing and how it works.

image

How does an aircraft fly? Think of it like this, due to the design of the wing, larger number of air molecules are hitting the bottom portion of the aircraft than the top.

As a result, a upward force acts on the wing, hence the wing lifts!

image

This works fine till we get to the wing tips.

In the wingtip, the air from a higher pressure wants to move to the region of lower pressure. And as a result, this forms vortices ( fancy name for the swirling motion of air ) known as Wingtip Vortex. ( because its formed in the wing tips!!! )

image

Why do birds fly in a V formation?

image

Migratory birds take advantage of each other’s wingtip vortices by flying in a V formation so that all but the leader are flying in the upwash from the wing of the bird ahead. ( Look at the image, each one is exactly out of phase in its wing motion ).

This upwash makes it easier for the bird to support its own weight, reducing fatigue on migration flight.

And somehow birds know about this and recalibrate themselves in flight?

Wow! There is so much more to a bird’s flight that that meets the eye. I will take up the same sometime down the line. But, If you are really curious to find out why, read this nature article.

Have a Good Day!

PC: John Benson, boldmethod,mathcareer, natgeo, NASA.

EDIT - Also do check out the Smoke Angels.

Source: fuckyeahphysica
See this in the app Show more