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B-47 Stratojet
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NOTE: THE RC B-47 MAY BE FOUND ON THE BOTTOM HALF OF THIS PAGE.
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Specifications |
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Primary Function:
Crew:
Engines:
Thrust:
Length:
Wingspan:
Weight Empty:
Max. Weight:
Cannons:
Ordnance:
Cruise Speed:
Max. Speed:
Initial Climb:
Ceiling:
Range:
First Flight:
Year Deployed: |
bomber
three
GE J47
6 x 7,200 lbs. ea.
109' 10"
116' 0"
80,760 lbs.
198,180 lbs.
2 x .20 mm
20,000 lbs.
550 mph
605 mph
4,350 fpm
40,500 feet
3,600 miles
12/17/47
1952 |
The 116 foot wingspan B-47 Stratojet, made by Boeing, was a bomber with a maximum weight and
an ordnance capacity greater than most WW II heavy bombers. It was the first swept wing bomber to be deployed by the U.S.A.F.
The B-47 Stratojet had jet fighter speed and maneuverability. It needed six jet engines for sufficient
power, and even that had to be supplemented with Rocket Assisted Take-Off (RATO) from 18 booster rockets for heavy pay loads.
The first B-47 Stratojet aircraft did not have in-air refueling capacity. This meant that they had to be deployed from basis within
round trip range of the Soviet Union in order to act as a nuclear deterrent.
Once in-flight refueling was adapted, missions as much as 36 hours long were flown to demonstrate the effectiveness of
the aircraft.
Although the B-47 Stratojet was intended for high altitude missions, the development of surface to air missiles by the Soviet Union altered
that mission. It required the strengthening of its air frame in order to perform missions below Soviet
radar detection levels. Another version of the B-47 Stratojet was a dedicated reconnaissance plane.
When maximum deployment of the B-47 Stratojet was achieved, over 1,300 of the aircraft served with 28 Strategic Air Command wings.
A total of 2,039 B-47 Stratojet aircraft of all types were produced.
XB-47D Stratojet
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The XB-47D verstion of the B-47 Stratojet was the world's fastest combined jet and propeller powered aircraft with a top speed of 598 mph.
On Aug. 26, 1955 the first of two modified aircraft took to the skies to test the theory that an aircraft could have the
acceleration of a propeller driven plane with the top speed of a jet. The aircraft had their inboard jet engines replaced with 9,710 hp
turboprops driving huge 15' diameter, 2' wide propellers.
Tests found excellent performance and few problems. However, more modern jet engines were able to have quicker acceleration, and a
combined jet and turboprop powered B-47 Stratojet for the USAF was never developed for deployment.
 B-47 Stratojet built by Sergio Vergara.
We are surprised to find so few B-47 radio control airplanes. The aircraft looks good and appears to have the proportions
to make a good rc airplane.
The B-47 Stratojet version with propellers and jets would make an interesting rc
airplane. Imagine how a radio control airplane would sound with turbojets and engines turning propellers?
In the picture directly above is the B-47 Stratojet slope soarer scratch built by Sergio Vergara. It has a wingspan
of 52" and uses aileron and elevator controls. Construction is all EPP foam. All up weight is 40 oz.
Sergio tells us that the slope soarer will fly well in winds above 10 mph.
The AMA has plans for a control line model. It should be fairly easily converted into a B-47 Stratojet rc airplane. It has a 46" wingspan.
Model Aviation News also has plans for the aircraft that can easily be converted in to B-47 Stratojet. It has a 54" wingspan and a length of 43".
The first picture below is of the B-47 Stratojet profile model rc airplane built by jiBerk of RC Groups. It is pusher prop powered.
In the last two pictures below is the great looking XB-47D version of the B-47 Stratojet built by Mike Potter. We want to thank Robert Hill for sending the pictures to us.
This is is a c/l model and not a radio control airplane. It was built from the Model Aviation News plans and can be converted into a B-47 Stratojet rc airplane.
Robert Stoneberg (bbhs31@gmail.com) writes about his B-47 Stratojet project: "I have begun a B-47 Stratojet project in that I have built some test models, glide,
CG, etc. The final larger rc model still has to be drawn up. The idea is to build an electric powered RB version with all the humps, bumps,
and other electronic appendages per the full size, with a scale of about 1"=2 ft. This works out to a W.S. of of near 60" and a fuse. a bit less. I plan to use thick (2") foam, laminated, & strenthened with carbon fiber, in the fuse.
The wings may have to be standard balsa constr. with a non- scale airfoil shape. perhaps a thin Clark -Y. My little gliders seem to like a 20
degree wingsweep rather than the scale 35 degrees. Slower landings. Probably skidded in on its belly/ALD-4 pod config. might be best. The
scale LG may prove to be too much, which I think is why few have built this bird as a model.
The full scale B-47 Stratojet was a real "beast" to set down smoothly until the pilot skill level improved. I know, for
sure about that! Power--- I think I'd like to use a quality E. brushless. Maybe AXI from Hobby-Lobby. Now here is the biggest diff: The B-47 Stratojet motor would be set into the nose with a folding prop and
a scaled nose spinner. The 6 jet engines would all be scaled dummies, and made to come off easily w/o tearing the wing off. I'd need a
bit of non-scale dihedral to help keep the ground clearance, also. RTF weight I estimate of the B-47 Stratojet is near 5 lbs. As you can see,
this B-47 Stratojet is not for sissies, but a fun challenge. I would love to get
some input on this rc project. You all probably have lots of "whys, how comes, etc, etc's , so have at it, please!"
We received the following email from Ed Clayman - FliteMetal.com: "I appreciate your mention of our two (2) B-47 Stratojet aircraft featured on
Wattflyer.com. My design has a 137.5" wingspan. The initial scale of these projects was just over 11.00% resulting in just
over 121" but grew to 137.5" @ 10.2% of the full size B-47E IV when initial workup was finished. I am the designer/builder and Sam Collins is my partner in this crime. My
B-47 replica is the most aggressive version of the B-47 Stratojet. This being a replica of one which practice bombed my
hometown in the mid 1950's. I arrived home from school, grabbed a peanut butter sandwich then about 4:00 pm sat on
my front doorstep waiting for an afternoon bombing run of my hometown by the USAF as it practiced low altitude attacks
of the then Eastman Kodak Holston Ordenance Complex's Area A and B, as I sat watching from my ring side seat, so to speak.)
The B-47 Stratojet performed a LABS (low altitude bombing system) maneuver. My hometown (Kingsport,
TN) is located at the southern most end of the Shenandoah Valley. The USAF practice bombed industrial complexes
along length of the 500 plus mile long valley floor. Missions began nearly a thousand miles away, off
the coast of Maine. Sam's WB-47 "weather bomber" replica of the B-47 Stratojet was utilized to gather
nuclear bomb fallout samples from Russian's nuclear bomb testing in the Siberian test ranges just beneath
the Artic Circle, above China. This location was to more or less permit fallout to drift East over Arctic Sea
instead over China. The remoteness afforded the USAF an ability to get in between mountain ranges above and East of the test
sites with minimum exposure to Russian air defenses.
That's the long and the short of our 10.2% B-47 Stratojet E IV and WB-47 projects. Thanks again for including our project in
your B-47 Stratojet overview."
The B-47 Stratojet by jiberk of RC Groups.
Mike Potter and his B-47 Stratojet.
B-47Stratojet built by Mike Potter.
Dave Gee of RC Universe is looking for drawings to help him build a B-47 Stratojet.
Joe
Martin of the New England Radio Control Modelers built a B-47 Stratojet years ago. It was propeller driven and had a wingspan of 6' 8".
Capt. Midnight at WattFlyer started a construction thread about his B-47 Stratojet with a 87" wingspan and a 80" length. Power comes from HETRC 6904 EDF units.
GGRW at WattFlyerRC is building a B-47 Stratojet with a 90 1/2" wingspan that is 79" long and weighs around 2 1/4 lbs. It will be driven by Feigao motors and GWS fans.
AT RC Groups Flite Metal started a thread about a 1/10 scale model B-47 Stratojet.
Steve C68 at RC Groups posted about B-47 Stratojet drawings.
Paul Willenborg posted to RC Groups about wanting to build a B-47 Stratojet.
Email us.
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Boeing B-47
