Why We Lost The Vietnam War

"Spiv" wrote in message
...

Have you a few weeks?


I wouldn't think it would take that long to review my messages and
copy-and-paste that which you believe is incorrect, but, by all means, take
all the time you need.



It was the first with all in one plane, which is was the norm after.
Do you understand?


But pioneering none of them individually.



Any design Boeing had was more luck than judgment.


How so? Boeing had more experience designing and building large pressurized
aircraft than anyone else in the world at that time, perhaps more than all
other manufacturers combined.



When the results came
out it was simple to avoid the problems.


But they avoided the problems BEFORE the results came out. They avoided the
Comet's problems even before the Comet's problems surfaced.



It was more than just a frame design, it was metallurgy too.


Yes, Boeing chose 75ST aluminum alloy for the primary structure. I don't
know what de Havilland chose, perhaps 24ST.



All of them means all types. Duh!


Well, if all airliners were similar to the Brabazon, the Brabazon couldn't
be ground-breaking in any area.

"Steven P. McNicoll" wrote in message
ink.net...

Any design Boeing had was more luck than judgment.

How so? Boeing had more experience designing and building large
pressurized
aircraft than anyone else in the world at that time, perhaps more than all
other manufacturers combined.

When the results came
out it was simple to avoid the problems.

But they avoided the problems BEFORE
the results came out. They avoided the
Comet's problems even before the Comet's problems surfaced.

What strange logic. How would they know what the problems were until the
Comet investigation? Were they good guessers? This is what you said "They
avoided the Comet's problems even before the Comet's problems surfaced." So
they knew the problems before the Comet was built eh? The investigation
uncovered points that were unknown to science beforehand in metallurgy.





It was more than just a frame design, it was metallurgy too.


Yes, Boeing chose 75ST aluminum alloy for the primary structure. I don't
know what de Havilland chose, perhaps 24ST.



All of them means all types. Duh!


Well, if all airliners were similar to the Brabazon, the Brabazon couldn't
be ground-breaking in any area.

"Spiv" wrote in message
...

What strange logic. How would they know what the problems were until
the Comet investigation? Were they good guessers?


They were better engineers, and they weren't the only ones that knew de
Havilland designed a poor structure. The RAE and BOAC both expressed their
concerns to de Havilland well before the Comet entered service.

de Havilland had very little experience with all-metal aircraft and none at
all with large pressurized airframes, Boeing had more than any other
manufacturer in the world. de Havilland's first all-metal aircraft was the
DH-95 Flamingo, a small prewar twin-engined transport, only sixteen were
built. Their second was the DH-104 Dove, another small twin-engined
transport. It would be quite successful but it hadn't even entered service
by the Comet's first flight.



This is what you said
"They avoided the Comet's problems even before the Comet's problems
surfaced." So they knew the problems before the Comet was built eh?
The investigation uncovered points that were unknown to science
beforehand in metallurgy.


You make it sound like metal fatigue was first discovered via the Comet's
structural problems. Not so!

The Comet was the star of the 1949 Farnborough show, but during a flight
there a fuselage panel buckled. The skin was too damn thin. The RAE was
quite concerned about fatigue. de havilland's chief engineer, Ronald Bishop,
was asked to test for fatigue, but he did not. In November 1951 the
Ministry of Supply threatened to stop the project because of continuing
concerns over metal fatigue, and BOAC was expressing concerns as well. It
was decided that testing would be carried out after the aircraft entered
service. Unknowingly, BOAC and the Comet's crew and passengers would become
test subjects.

"Steven P. McNicoll" wrote in message
news

"Spiv" wrote in message
...

What strange logic. How would they know what the problems were until
the Comet investigation? Were they good guessers?

** snip babble. Unable to apply logic **

"Spiv" wrote in message
...

Unable to apply logic


Good. Recognizing your limitations is the first step.