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-   -   B-52 Loses Vertical Stabilizer - and still lands (https://www.pprune.org/military-aviation/597819-b-52-loses-vertical-stabilizer-still-lands.html)

Farrell 2nd Aug 2017 17:12

B-52 Loses Vertical Stabilizer - and still lands
 
For those who haven't seen this amazing footage.

"On 10 January 1964 a Boeing B-52H Stratofortress was being used to test buffeting turbulence effects on aircraft when the entire vertical stabilizer fin and rudder were unexpectedly ripped off. Amazingly the aircraft was able continue in controlled flight and after five hours Pilot Charles "Chuck" Fisher landed the crippled plane safely at Blytheville AFB. "

https://www.youtube.com/watch?v=ihAEyZ25qfU


CONSO 2nd Aug 2017 17:56

A bit more
 
I knew a few BA types who were involved via phon con from seattle and the events leading up to that near fiasco. The B52 was designed for high altitude flight and generally lower aero loads at various speeds. But the militay brass had decided in that era that low level penetration was a new necessary requirement. Boeing tried to tell them No way- high speed lo level would exceed previously agreed on margins and structural loads. IOW dont do it !. My memory may be faulty- but I think the AF wanted an AF flight crew to do some low level high speed passes cuz Boeing refused to do such. I " think- I remember" that one AF crew was lost BEFORE the flight test depicted. Sure enough- the tail came off.. and crashed :mad:

And in later years, Navy TACMO wanted a 707 to do a tight turn bank to drop a near vertical low freq antenna for sub communication- and guess what- a similar event happened- and plane did land safely with no doubt brown stains on seat cushions.

Major mods to vertical sxtab resulted in both cases.

PrivtPilotRadarTech 2nd Aug 2017 18:14

A few days later a similar incident caused the loss of a nuclear-armed B-52.
https://en.wikipedia.org/wiki/1964_S...ain_B-52_crash

ORAC 2nd Aug 2017 18:32

And why the design was changed to the shorter cropped tail of the B-52D; as was that of the Lightning for the F-3 onwards due to the high vibration buzz of the tail at speed low level and fear the tail would come off.

CONSO 2nd Aug 2017 20:19


Originally Posted by PrivtPilotRadarTech (Post 9850159)
A few days later a similar incident caused the loss of a nuclear-armed B-52.
https://en.wikipedia.org/wiki/1964_S...ain_B-52_crash


I stand corrected as to the timing of a AF crewed crash re the test described - unfortunately
from wiki

10 January 1964: 3 days before the Savage Mountain crash, a New Mexico B-52 test showed the vertical stabilizer could fail.
Was any ' brass " held accountable?

hoodie 2nd Aug 2017 21:37

Held accountable for what? Not reacting with a fleetwide solution within 3 days? :hmm:

Regarding the USN TACAMO (E-6, presumably); why did the fin fail? The aircraft should have been in a balanced steep turn, surely? Hence no significant fin side loads should have been present.

Liffy 1M 3rd Aug 2017 12:29


Originally Posted by ORAC (Post 9850178)
And why the design was changed to the shorter cropped tail of the B-52D; as was that of the Lightning for the F-3 onwards due to the high vibration buzz of the tail at speed low level and fear the tail would come off.

The B-52H had a short fin to begin with. The B-52A to B-52F models had the tall fin.

CONSO 3rd Aug 2017 14:15


Originally Posted by hoodie (Post 9850351)
Held accountable for what? Not reacting with a fleetwide solution within 3 days? :hmm:

Regarding the USN TACAMO (E-6, presumably); why did the fin fail? The aircraft should have been in a balanced steep turn, surely? Hence no significant fin side loads should have been present.


https://www.upi.com/Archives/1989/02...4494603608400/

" SEATTLE -- A Navy Boeing 707, returning from a test flight designed to push the craft beyond its design limits, landed safely Thursday with portions of its rear vertical tail and right rudder missing, officials said.
Boeing officials said the plane, which is the prototype of 16 707s the company is making for the military, took off from Boeing Field in Seattle about noon for a flight to Bellingham and back.
The plane lost about one-third of its vertical tail fin and a small part of its right rudder while a Boeing test pilot was conducting a 'flutter' test on the plane over the Olympic Peninsula, a test designed to push the airplane beyond its design limits.
A Boeing spokesman said the pilot had no difficulty flying or landing the plane after the incident occurred...."


as to the B52- check history for B-52- and then ask why somone did NOT restrict- cancel hold- stop NUKE ARMED training flights at low level immediately after test failure.:mad:

PDR1 3rd Aug 2017 14:35


Originally Posted by CONSO (Post 9850961)
The plane lost about one-third of its vertical tail fin and a small part of its right rudder while a Boeing test pilot was conducting a 'flutter' test

Interesting. Can anyone give me a photo or drawing of a B52's right rudder, and show me where it is fitted compared to its left and/or centre rudders?

:confused:

PDR

CONSO 3rd Aug 2017 20:30


Originally Posted by PDR1 (Post 9850982)
Interesting. Can anyone give me a photo or drawing of a B52's right rudder, and show me where it is fitted compared to its left and/or centre rudders?

:confused:

PDR


The link was to a UPI article. right rudder was a few characters shorter than right horizontal stabilizer- and everyone knows that the rudder is at the back of the airplane, and and elevators are in tall buildings- perhaps in that era, reporter or editor was thinking of a Connie ?? :cool:

And vertical fins are only on large fish like sharks ! :)

PDR1 7th Aug 2017 15:47

Ah.

Clearly fins ain't what they used to be...


PDR

DirtyProp 8th Aug 2017 08:37

A very interesting footage, could be useful to civilian drivers as well.
Thanks to the OP.

B2N2 8th Aug 2017 08:40


Originally Posted by DirtyProp (Post 9855566)
A very interesting footage, could be useful to civilian drivers as well.
Thanks to the OP.

You mean Airbus drivers :}

Brian W May 8th Aug 2017 09:07

Wow . . . . that is all.

PDR1 8th Aug 2017 10:03


Originally Posted by B2N2 (Post 9855568)
You mean Airbus drivers :}

Well perhaps you should take that up with the ghosts of the passengers and crew of JAL123. But then THAT fin-loss was caused by boeing's bodged repairs rather than mis-piloting, of course...

PDR

Bergerie1 8th Aug 2017 10:29

PDR1
They not only lost the fin but also all the hydraulics.

PDR1 8th Aug 2017 10:35

True, but I was just countering an airbus-dig with a boeing-dig to bring balance to the farce.

PDR

Buster Hyman 8th Aug 2017 12:55

The aircraft that just keeps giving...

https://fightersweep.com/8425/watch-...d-bomber-2050/

camelspyyder 8th Aug 2017 17:29

I know the internet is slow here, but wasn't this news in 1964?

Niner Lima Charlie 10th Aug 2017 16:56

The aircraft, B-52H, 61-0023, was repaired and continued in service until retirement in 2008. Now on display on "celebrity row" at Davis-Monathan "boneyard" in Arizona.


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