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[BBC]The quest to fly from New York to London in one hour - Page 3

post #21 of 90
Quote:
Originally Posted by Solarin View Post

You are talking about velocity which is relative. Force has nothing to do with velocity. You are born at this velocity, and, barring a sudden acceleration/deceleration of the Earth, are none the wiser about the speed you are travelling.

But the velocity is much slower at the poles (zero, in fact), and people don't explode when returning from a trip to Antarctica either. Yet they obviously had to accelerate at some point.
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post #22 of 90
i would faint if i went those speeds, im sure lots of people would also.
post #23 of 90
Quote:
Originally Posted by Manyak View Post

But the velocity is much slower at the poles (zero, in fact), and people don't explode when returning from a trip to Antarctica either. Yet they obviously had to accelerate at some point.

Your linear velocity with respect to the Earth would be zero, but your angular velocity would not be zero. Angular velocity is constant at all points on the Earth. Therefore, you don't accelerate (or decelerate).

Perhaps I wasn't phrasing my question correctly.

When you are approaching the speed of sound, can you slowly accelerate up to and past that speed, or does an acceleration threshold need to be met because of drag forces? (Like escape velocity of the Earth.)
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post #24 of 90
Quote:
Originally Posted by Solarin View Post

Your linear velocity with respect to the Earth would be zero, but your angular velocity would not be zero. Angular velocity is constant at all points on the Earth. Therefore, you don't accelerate (or decelerate).
Perhaps I wasn't phrasing my question correctly.
When you are approaching the speed of sound, can you slowly accelerate up to and past that speed, or does an acceleration threshold need to be met because of drag forces? (Like escape velocity of the Earth.)

Considering that people flew on the Concord at supersonic speeds without any major problems, the same will apply here.

Angular velocity has nothing to do with this.
Quote:
Originally Posted by KRaZiGLiTcH View Post

i would faint if i went those speeds, im sure lots of people would also.

Only if you knew you were going that fast, which, you wouldn't.
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post #25 of 90
Quote:
Originally Posted by Tsumi View Post

Considering that people flew on the Concord at supersonic speeds without any major problems, the same will apply here.
Angular velocity has nothing to do with this.
Only if you knew you were going that fast, which, you wouldn't.
Really is there something that makes you feel that your not going that fast ?
post #26 of 90
Related; How often do objects travelling just above the speed of sound create a sonic boom, is it only once until it slows down or can it keep happening?
    
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post #27 of 90
Quote:
Originally Posted by Blazing angel View Post

Can the Sr-71 carry 100 people while providing a luxurious cabin and proper accommodations? rolleyes.gif

No, but it does carry a couple in a pretty rough and high tech cockpit all stealthy and ninja-ish biggrin.gif
Quote:
Originally Posted by Minnetonka16 View Post

Related; How often do objects travelling just above the speed of sound create a sonic boom, is it only once until it slows down or can it keep happening?

Once, when you cross the sound barrier. Then the craft makes a sort of buzzing sound, but no more booms.
Edited by Artikbot - 10/14/12 at 4:10am
   
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post #28 of 90
Quote:
Originally Posted by Artikbot View Post

No, but it does carry a couple in a pretty rough and high tech cockpit all stealthy and ninja-ish biggrin.gif
Once, when you cross the sound barrier. Then the craft makes a sort of buzzing sound, but no more booms.

Thanks for the quick reply +rep
    
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post #29 of 90
Quote:
Originally Posted by Blazing angel View Post

Can the Sr-71 carry 100 people while providing a luxurious cabin and proper accommodations? rolleyes.gif

Neither did Concorde wink.gif
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post #30 of 90
Quote:
Originally Posted by Minnetonka16 View Post

Related; How often do objects travelling just above the speed of sound create a sonic boom, is it only once until it slows down or can it keep happening?

From wiki:
Quote:
Since the boom is being generated continually as long as the aircraft is supersonic, it fills out a narrow path on the ground following the aircraft's flight path, a bit like an unrolling red carpet and hence known as the boom carpet. . . . It is a common misconception that only "one" boom is generated during the subsonic to supersonic transition, rather, the boom is continuous along the boom carpet for the entire supersonic flight.
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