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Electric Ducted Fan Jets Discuss electric ducted fan jets here including setup tips, power systems, flying techniques, etc.

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Old 06-19-2010, 01:55 AM   #251
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Default Lil' R.A.S.C.A.L


Let's see if anyone can tell us what the name means...also what is meant by the nickname "Crew Saver"?


____

You guessed it, I'm a Lil' RASCAL...;^)



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Old 06-19-2010, 03:30 AM   #252
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Ahh, such wonderful toys...
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Old 06-19-2010, 11:02 PM   #253
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Default To Protect And Serve...So You Can Sleep...Tonight



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Old 06-25-2010, 05:36 PM   #254
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Wow, I thought someone would answer quickly.
Why did they name this weapon "RASCAL".




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Old 06-25-2010, 05:42 PM   #255
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Default

Originally Posted by Flite-Metal View Post
Wow, I thought someone would answer quickly.
Why did they name this weapon "RASCAL".

Really Awesome Super Cool Afgan Locator?

But seriously, RAdar SCAnning Link.

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Old 06-25-2010, 06:32 PM   #256
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Default

Exactly

Not as good as a Predator...but still a guided missle with radio link to the B-47's bombardier/navigator who flew it to the target rather than expose crew
to the consequence of being present during detonation...hence the nickname
"Crew Saver".

Question #2:

After suffering repeated problems with this weapons delivery system (which preceded implementation of ICBMs) what was the maneuver performed to protect
the crew?



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Old 06-27-2010, 10:44 PM   #257
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LABS maneuver. Basically a Immelman with bomb release near the vertical. (don't you detail that earlier in your post?)
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Old 06-27-2010, 11:31 PM   #258
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Default Bravo.. :)

Exactly...Checking to see if anyone's paying attention. Lots of lurkers out there who never ask or respond to questions . Nuke
was "lofted" at this point during the vertical climb. Inertia and gravety completed the delivery to a computed target at a specific
distance from the I.P. (initial point)



Then the B-47's nose was pushed over immediately after a half roll at the top of the half loop.



Low altitude completion was intended to permit high speed exit from nuke detonation. It resulted in extreme wrinkling of the fuselage
fore and aft of wing and horiz stab. There is YouTube footage of the cockpit view showing shuttering during virtual stall just as the
B-47 topped over.

Slick shape of B-47 enabled this maneuver to be performed as if it were a fighter bomber. At the time the B-47 was faster than every
jet fighter in the world.



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Old 06-28-2010, 12:00 AM   #259
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Default B-47 labs

Hi Ed!

According to a number of sources, the B-47 low altitude bombing system (LABS) was only used (in practice flights) for a relatively brief period. Apparently stresses induced during the low-altitude portion of the maneuver (before the ca 2.0g pull-up started) may have caused cracks in the lower wing skins and/or wing/fuselage structural components. Tests and extensive analyses confirmed the existence of the cracks, but didn't isolate the cause to the LABS.

Weapon release was probably between the start of pull-up and before the aircraft became vertical, depending on the planned profile for the mission.

In any event, SAC deleted this maneuver from the B-47's list of authorized weapon delivery profiles (maybe in late 1950s or early 1960s??). Various descriptions of the technique refer to it as an Immelmann, but my guess is that, in contrast to the Immelmann I was taught in USAF flight training, the top part of the maneuver involved a change in direction as well as the 'loop' part (in the USAF pilot training I received, you only got a good Immelmann grade if you ended up on the same heading - usually a section line, or some other visual reference - at the top as you entered in the bottom of the maneuver).

If others have factual info on this maneuver, it would be good to get their comments.

Cheers,

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Old 06-28-2010, 12:33 AM   #260
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My aircraft a 53 model came back from one of this missions and on post flight we found a 3.5 inch crack on the fuslage skin just below the wing attach point. Crack was split open about an 1/8 inch, and located about 1/3 way back from leading edge. Caused quite a stir when reported.

Boeing sent reps to look at and determined aircraft was safe to fly to Boeing for repair.

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Old 06-28-2010, 12:44 AM   #261
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Default Two Styles Of "LABS"

Dave,

Yes, of the two styles of roll out, one high the other low, the high roll over resulted in a stall induced change in heading. I have
video footage taken from another aircraft ahead of a B-47 performing the maneuver. Smoke resulting from the throttle-to-the-firewall
clearly shows change in heading during the rollout.



This Power Point illustration was part of a presentation at MOF in Seattle.





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Old 06-28-2010, 12:55 AM   #262
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Default

Hi...Hircflyer...

Its good to read 1:1 pilot and crew experiences. I have a B-47E driver in my club. He rolled out of the AF to the left seat in a 707.
Horrace Cane is his name. Some reading this thread may know Horrace who lived in Chicago before moving to Houston.

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Old 07-05-2010, 10:27 PM   #263
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Thumbs up

I have been lurking on this thread and CPT Midnight's B-47 thread and it has been fascinating to see the recapitulation of the various subcomponents of the B-47 and how they are/will be integrated into the final models. Really intensely detailed and well referenced- all of you who have contributed to this thread have made it very educational as well as fun! Thanks!

Bob

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Old 07-06-2010, 03:04 AM   #264
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Default As I Suspected It Would Be

Thanks Bob,

Thread style is turning out exactly as I intended. Anyone desiring to use the resources within the thread to build a B-47E-IV can do
so from the thread. As you hinted, there are a number of yet to be heralded friends contributing their time helping with work arounds
and work throughs to some of the more challenging aspects.

In particular I wanted to get away from the traditional hot wired donut method of forming the most intricate components on the B-47E.
These are the two nacelles, tail turret sheath, and everything ahead of the wing leading edge.

CNC milling is the only way to achieve proper shape without traditional accumulative weight from putty and leveling. Since this is
an FAI F4C project, weight is "the" issue from the first pencil line through to the Lipo's. I am blessed in that the AUW for FAI is sans
batteries.

There is new cathode composition being integrated which will permit at least a 30% gain in capacity with no gain in Lipo weight.
This is aimed at high amp consumption applications in automotive, construction, & gardening applications, principally automotive.
Panasonic has been bringing these along at a rapid pace. Gains as much as 45% are the buzz....:^)

Because my consumption rate is so much higher than George Maiorana's Tu-95 I need all the capacity I can stuff in my inboard
nacelles and pylons


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Old 07-06-2010, 09:28 PM   #265
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Default 10.2% B-47E-IV Component Availability

I have revisited the use of female molds for all these items and have pretty much decided that will be the route after I complete
the plugs. Several people have inquired about availability of
fiber glass and other components so they can construct a B-47E-IV at
1/10.2.


I need to receive an email inquiry from you if you are interested in purchasing a template set, copy of the mark-ups, fiber glass
parts, clear canopy partno, cockpit partno, pilot/copilot/nav
partno, retract spec, wheel & brake spec, and an edited set of CD's
with documentation for
the final version of the B-47E-IV. Send me an email with your telephone, name, and address.




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Old 07-18-2010, 03:57 PM   #266
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Default Fuel Door Motion

Earlier I speculated the fuel receptical door may have rotated to reduce the resistance to it when opened. I have film footage from
which I created an animated gif so I could share how it actually moves.



If anyone has a photo or line art drawing showing the opening mechanism a post sharing of your resource would be greatly appreciated.
Adding this "eye candy" to the fuselage will be worth the time and effort in the bottom line score. Door has a recessed hinge on either side of its base.


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Old 07-18-2010, 08:02 PM   #267
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Default

Super job Ed! It is like "abra cadabra, here is your answer"! The animated GIF doesn't eliminate the guess, but it makes it obvious it is an internal device (i.e. inside recess). I would love to see a maintenance schematic of this!

Bob

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Old 07-18-2010, 09:39 PM   #268
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Default Pilot's Operating Instructions

Found this on Google books: http://books.google.com/books?id=Zt5...page&q&f=false

It is not the complete contents, but there is enought there to tease you! No info on fuel door, although there is definitely lots of hydraulic power inside the B-47.

"Dum spiro spero." (While I breathe, I hope).
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Old 07-19-2010, 12:24 AM   #269
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Default No Magic...Just Documentation

Originally Posted by Voyager2lcats View Post
Super job Ed! It is like "abra cadabra, here is your answer"! Bob
No magic... Its the over 700 meg of documentation...including pilot and crew manuals. No reason to get OCD on the door mechanism
considering its not a replication issue as much as it is eye candy. When I am asked what documents the door opening I need only show
a print of the animated sequence printed on a single page.

So far only one person took me up on the B-47 documentation CD's.

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Old 07-19-2010, 02:06 AM   #270
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If I'm not "the one" then please add me to the list!
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Old 07-19-2010, 02:25 AM   #271
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Was a mechanic assigned to Plattsburg for 6 years and the IFR door was probably one of the few systems that never gave us any problems...I remenber once however we had to replace the door seal and I can't remember if the seal was inflatable or not...I know the canopy seal was....

The refuel pipe came in right over the navs head, we had an incident once when the boom latching mechanism leaked and the nav got soaked in JP-4

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Old 07-19-2010, 02:49 AM   #272
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Default JP-4 All The Way Home

Originally Posted by Hircflyer View Post
The refuel pipe came in right over the navs head, we had an incident once when the boom latching mechanism
leaked and the nav got soaked in JP-4
Ahhh...amidst all the vacuum tube electronics frying along at maximum temperature that must have been an interesting return home
to land. I assume this was somewhere over half way to no where...

Richard...I referenced those who were interested in the CD alone...not all the components, etc.


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Old 07-19-2010, 06:05 AM   #273
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Actually it was over Vermont , problem was B47 had no fuel dump system they had to circle until they were light enough to land.

They depressurized the aircraft and vented the cockpit to atmosphere.

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Old 07-19-2010, 08:32 AM   #274
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Default Fuel Dump...

Originally Posted by Hircflyer View Post
Actually it was over Vermont, problem was B-47 had no fuel dump system. They had to circle until they
were light enough to land. They depressurized the aircraft and vented the cockpit to atmosphere.
Interesting to learn the internal tanks had no dump capability...then again it would have made for a very busy balancing act. I had
assumed the fuel system had dump capability after observing the wing tank dumps...or what I assumed to be dumps. Are they simply
vents in reality?








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Old 07-19-2010, 08:16 PM   #275
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Default

External had no dump capability...tanks were just dropped. There was a case not one of our aircraft, that one tank fell off right after take -off , which caused a low wing condition and when the crew try to drop the other tank it refused to fall. Aircraft was hand flown in this condition until the fuel was exhausted in the external tank and the aircraft could land.

This caused a fleet wide condition where all the tanks were removed and the attaching mechanism was inspected and lubed/replaced as necessary. It turned out that Boeing had never designed the system to have tank installed permanently, and no maintenance had been performed on the system.

That changed right away....we started "dropping" tanks on a regular basis, by using a tug and pulling on the chute lines.

As a side note those tanks were not able to be fueled by the single point system...we had to service throught external cap with a hose truck.

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