The title of world's fastest human actually goes to three humans, Thomas Patten Stafford, John Watts Young and Eugene Andrew Cernan.
These three men reached a speed of 24,790 MPH or 39,897 km/h on board Apollo 10 during their return from the Moon.
That translates to 6.88 miles per second or 11.08 kilometers per second.
T+plus 10 minutes. A very large piece of foam was seen breaking free from the external tank shortly after separation of the twin solid rocket boosters. Video from a camera on the tank showed the piece did not strike the orbiter's right wing.
Why do Nasa continue to cheap out on safety and design on these things? Foam must come off on practically every launch.
This was the first external fuel tank that was built from the ground up with lots of new safety features implemented from the colombia disaster. It seems that no matter what they do the foam will invariably come off
Edit - not saying none of the other tanks previous didn't have the safety features, previously they were retrofitted to an already existing tank iirc.
Ask a physics professor. Anything that has to deal with a temperature difference of around 250C from inner surface to outer is likely to suffer thermal issues. The simple answer is that the foam cracks under this thermal load and some breaks off.Why do Nasa continue to cheap out on safety and design on these things? Foam must come off on practically every launch.
What I meant is, why not redesign the shuttle, so foam insulation is not needed? Nasa seem to hate having to spend money on safety features, hence why there is still no emergency ejection system on ascent.