DSK wrote in message ...

To put this in perspective, this is roughly equivalent to stopping ten
rounds from a .50 cal machine gun. Destructive, nyet?

Your analogy is extremely misleading, since the area to which this
force would be applied is hundreds of times smaller. This leads to
hull-pressures that are hundreds of times larger

That's not quite right, the force due to deceleration isn't linear.
Comparing a braking distance of 2' to 4', the energy is less than
half... about a third would be closer...

Thats just plain wrong, the force (which is what Jordan was talking
about) due to decelaration IS linear with breaking distance (given a
certain initial velocity). The formula for force due to a constant
deceleration (in terms of initial velocity and 'breaking distance')
is:
F = m*v^2/(2d)

Bryan Glover wrote:
Your analogy is extremely misleading

It may be misleading, but I dunno about "extremely misleading."

... since the area to which this
force would be applied is hundreds of times smaller. This leads to
hull-pressures that are hundreds of times larger


A large part of that is also due to the energy transient.

In any event, my point was to not underestimate the destructive power of
the ocean, which certain types of cruisers are always doing.


That's not quite right, the force due to deceleration isn't linear.
Comparing a braking distance of 2' to 4', the energy is less than
half... about a third would be closer...


Thats just plain wrong

Well, working with a not-infallible memory, it happens sometimes. I will
go back to the old textbook and see what it says.

DSK

Dear DSK
The last post was answered by my son, who is a physicist and is
protective of Don Jordan. We are continuing his research, with his
help. The problem is, if one section is discredited, then a cloud of
doubt settles on all his work.
regards
Bryan

DSK wrote in message ...
Bryan Glover wrote:
Your analogy is extremely misleading

It may be misleading, but I dunno about "extremely misleading."

... since the area to which this
force would be applied is hundreds of times smaller. This leads to
hull-pressures that are hundreds of times larger


A large part of that is also due to the energy transient.

In any event, my point was to not underestimate the destructive power of
the ocean, which certain types of cruisers are always doing.


That's not quite right, the force due to deceleration isn't linear.
Comparing a braking distance of 2' to 4', the energy is less than
half... about a third would be closer...


Thats just plain wrong

Well, working with a not-infallible memory, it happens sometimes. I will
go back to the old textbook and see what it says.

DSK