Structural failure due to harmonic vibration

Do a search for Lockheed Electra, Tell City Crash, 1960 I believe.
Reference that with propeller whirl mode, and you should come up with
all you'll ever need to know about resonant frequency as relates to
destructive force.

Hmmm. If it happened to another Electra in 1960, that says a lot.
The crash I'm talking about happened in 1938.

I guess maybe they DIDN'T address the problem...?
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

"Jay Honeck" wrote in message
ps.com...

Hmmm. If it happened to another Electra in 1960, that says a lot.
The crash I'm talking about happened in 1938.

I guess maybe they DIDN'T address the problem...?


Different aircraft.

Jay Honeck wrote in news:1194537883.203290.75060
@e9g2000prf.googlegroups.com:

Do a search for Lockheed Electra, Tell City Crash, 1960 I believe.
Reference that with propeller whirl mode, and you should come up with
all you'll ever need to know about resonant frequency as relates to
destructive force.

Hmmm. If it happened to another Electra in 1960, that says a lot.
The crash I'm talking about happened in 1938.


Two completely different airplanes. You've obviously been drinking the tidy
bowl as well as sniffing the furntiure polish.


Bertie

Jay Honeck wrote:

Hmmm. If it happened to another Electra in 1960, that says a lot.
The crash I'm talking about happened in 1938.

I guess maybe they DIDN'T address the problem...?

Lockheed reused the Electra name. The 1930s Electra (think Amelia Earhart)
was a piston twin. The 1950s Electra was a 4 engine turboprop airliner.

http://www.constable.ca/sd076a.jpg

http://www.spain4uk.co.uk/images/wil...tra_G-LOFE.jpg

John Galban=====N4BQ (PA28-180)

--
Message posted via http://www.aviationkb.com

Jay Honeck wrote:

Hmmm. If it happened to another Electra in 1960, that says a lot.
The crash I'm talking about happened in 1938.

I guess maybe they DIDN'T address the problem...?

Lockheed reused the Electra name. The 1930s Electra (think Amelia Earhart)
was a piston twin. The 1950s Electra was a 4 engine turboprop airliner.

http://www.constable.ca/sd076a.jpg

http://www.spain4uk.co.uk/images/wil...tra_G-LOFE.jpg

John Galban=====N4BQ (PA28-180)

--
Message posted via http://www.aviationkb.com

"Jay Honeck" wrote in message
ps.com...

I've just finished reading the tale of the first round trip coast-to-
coast flight (which was accomplished by mid-air refueling,
occasionally from milk cans) from Spokane, WA to the east coast and
back, way back in 1929. They flew a distance of 10,000 miles (they
circled over airports whilst refueling) without landing. A
fascinating story, printed in a terrific magazine, "Aviation History".


A coast-to-coast flight originating from Spokane? Spokane is in eastern
Washington, not far from the Idaho border. Must be nearly 400 miles from
the Pacific coast.

A coast-to-coast flight originating from Spokane? Spokane is in eastern
Washington, not far from the Idaho border. Must be nearly 400 miles from
the Pacific coast.

My mistake. The author called the flight "trans-continental" and
"across America" -- which my brain translated into "coast-to-coast"
for some reason...
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

"Jay Honeck" wrote in message
oups.com...

A coast-to-coast flight originating from Spokane? Spokane is in eastern
Washington, not far from the Idaho border. Must be nearly 400 miles from
the Pacific coast.


My mistake. The author called the flight "trans-continental" and
"across America" -- which my brain translated into "coast-to-coast"
for some reason...


I think most people would agree with you. I'd say a "trans-continental"
flight that started in Spokane and proceeded east failed to transit about
400 miles worth of continent.

Steven P. McNicoll wrote:
"Jay Honeck" wrote in message
oups.com...

A coast-to-coast flight originating from Spokane? Spokane is in
eastern Washington, not far from the Idaho border. Must be nearly
400 miles from the Pacific coast.


My mistake. The author called the flight "trans-continental" and
"across America" -- which my brain translated into "coast-to-coast"
for some reason...


I think most people would agree with you. I'd say a "trans-
continental" flight that started in Spokane and proceeded east failed
to transit about 400 miles worth of continent.

Would you count KSEA to KJFK as Trans-continental? If so the difference in
the distance of a great circle route flight would only be 193 miles.

"Gig 601XL Builder" wrDOTgiaconaATsuddenlink.net wrote in message
...

Would you count KSEA to KJFK as Trans-continental?


Yes.