HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Dec 14, 2010, 11:13 PM
Registered User
drew1231's Avatar
Joined Jan 2009
585 Posts
Quote:
Originally Posted by SilentHunter View Post
Yeah Im not a huge fan of its names, lancer, bone etc... Too pretty for those names.
I like lancer and bone would have gone great with he new concept b-1.

They had a concept for a b-1R with the engines (minus thrust vectoring) from the f-22 and a massive missile rack.

It was to be names the b-1r or the boner
drew1231 is offline Find More Posts by drew1231
Reply With Quote
Sign up now
to remove ads between posts
Old Dec 14, 2010, 11:20 PM
Registered User
SilentHunter's Avatar
United States, Death Valley
Joined Aug 2003
3,113 Posts
Lancer sound like your poking a zit, bone sounds like... well the other name for Penetrator
SilentHunter is offline Find More Posts by SilentHunter
Reply With Quote
Old Dec 14, 2010, 11:54 PM
Avoid The Ground!
Flexserve's Avatar
United States, FL, Tampa
Joined Sep 2008
1,058 Posts
Quote:
Originally Posted by SilentHunter View Post
Lancer sound like your poking a zit, bone sounds like... well the other name for Penetrator

Well if your seeing one on the wrong end of the theater's fence...your boned.
Flexserve is offline Find More Posts by Flexserve
Reply With Quote
Old Dec 16, 2010, 02:40 PM
Avoid The Ground!
Flexserve's Avatar
United States, FL, Tampa
Joined Sep 2008
1,058 Posts
......
Flexserve is offline Find More Posts by Flexserve
Last edited by Flexserve; May 24, 2013 at 02:03 AM.
Reply With Quote
Old Dec 20, 2010, 11:15 AM
A Global Force For Good
jmpdgs's Avatar
USA, OH, Cincinnati
Joined Jun 2009
730 Posts
Tried to register on your the B-1b.net site, but it never sent the "verification email" and I've never been able to log in.
jmpdgs is offline Find More Posts by jmpdgs
Reply With Quote
Old Dec 20, 2010, 12:25 PM
Avoid The Ground!
Flexserve's Avatar
United States, FL, Tampa
Joined Sep 2008
1,058 Posts
Quote:
Originally Posted by jmpdgs View Post
Tried to register on your the B-1b.net site, but it never sent the "verification email" and I've never been able to log in.
Sorry was working on backend. Your registered.
Flexserve is offline Find More Posts by Flexserve
Reply With Quote
Old Dec 20, 2010, 01:32 PM
Registered User
Joined Apr 2005
64 Posts
I'm interested to see a discussion on "how" the swing-wing mechanism is to be built. I'm thinking that one would have to build a mechanism that can provide the travel necessary and the "hold" force to keep the wings at the requested angle, while in flight (with the loading factor of air pushing against the wing-panel.

One thing we can use, is 2 linear actuators (commonly used in the robotics field) with enough strength to swing one wing itself. I've looked at a few, and the folks in Firgelli, Vancouver BC (http://www.firgelli.com/) have a nice selection, have R/C connection capabilities to boot.

Calculating the required force would be next, as the units come in at 10 to 300 Newtons, but weight goes up then... Problem is, what weight would one use for a wing-panel? Would we use the "drag" force divided by 2 (as it is in equilibrium with the "thrust" force in non-accelerating flight? I guess so...

Next, moment-arms and you have your minimum actuator strength... Comments?


--d



Cheers,


--d
dlinegar is offline Find More Posts by dlinegar
Reply With Quote
Old Dec 20, 2010, 01:36 PM
High Altitude Specialist
snivilous's Avatar
Joined Jan 2010
867 Posts
ummm...i saw a guy who used one high torque servo and had two servo arms come off it, when the wing was fully forward the servo arm and the servo rod would align so the load would get dumped into the servo housing, nothing complicated. don't know how he held it in a specific position, but would work well for full forward and full aft sweep.
snivilous is offline Find More Posts by snivilous
Reply With Quote
Old Dec 20, 2010, 02:43 PM
Avoid The Ground!
Flexserve's Avatar
United States, FL, Tampa
Joined Sep 2008
1,058 Posts
Quote:
Originally Posted by snivilous View Post
ummm...i saw a guy who used one high torque servo and had two servo arms come off it, when the wing was fully forward the servo arm and the servo rod would align so the load would get dumped into the servo housing, nothing complicated. don't know how he held it in a specific position, but would work well for full forward and full aft sweep.
Looks something like this?

However, this is being HEAVILY modified. We have to take into account the CG during and after sweep. The B-1B will try NOT to use the typical elevetor up correction that most F-14's do. Instaed a sliding battery tray linked to the wing sweep mechanism is being entertained for correct CG throughout a sweep; no matter the degree of sweep.
Flexserve is offline Find More Posts by Flexserve
Last edited by Flexserve; May 24, 2013 at 01:52 AM.
Reply With Quote
Old Dec 20, 2010, 04:19 PM
Registered User
Joined Apr 2005
64 Posts
The single servo is a neat approach, i'm just wondering for larger scales (80+ " wingspan) this might not be a suitable beefy enough option...

Anyway, messing around... My first "placement" for a linear actuator...

Need to do the calculations to see if this would fit the bill for a larger model...

--d
dlinegar is offline Find More Posts by dlinegar
Reply With Quote
Old Dec 20, 2010, 09:03 PM
Registered User
LuvEvolution7's Avatar
St.Catharines, Ontario
Joined Jan 2009
10,377 Posts
the problem with those actuators, is that the controller boards are so damned expensive to buy. the actuators are fairly cheap, but each one needs a seperate controller. I know there was a guy on RCU that was trying to make a board to control multiple actuators. not sure how he made out with that though.
LuvEvolution7 is offline Find More Posts by LuvEvolution7
Reply With Quote
Old Dec 20, 2010, 09:37 PM
Avoid The Ground!
Flexserve's Avatar
United States, FL, Tampa
Joined Sep 2008
1,058 Posts
Looks to overcomplicate the design.
Flexserve is offline Find More Posts by Flexserve
Reply With Quote
Old Dec 20, 2010, 09:39 PM
Registered User
LuvEvolution7's Avatar
St.Catharines, Ontario
Joined Jan 2009
10,377 Posts
Quote:
Originally Posted by dlinegar View Post
The single servo is a neat approach, i'm just wondering for larger scales (80+ " wingspan) this might not be a suitable beefy enough option...

Anyway, messing around... My first "placement" for a linear actuator...

Need to do the calculations to see if this would fit the bill for a larger model...

--d
the 18 foot B-1 that Bob is building is using these actuators for wing sweep. not sure of the exact model, but they are huge actuators. if you want to check it out, the site is www.b1modelproject.com
LuvEvolution7 is offline Find More Posts by LuvEvolution7
Reply With Quote
Old Dec 20, 2010, 09:45 PM
Registered User
SilentHunter's Avatar
United States, Death Valley
Joined Aug 2003
3,113 Posts
Standard servo, screwjack and external pot Basically you disconnect the internal pot in the servo, and reconnect to another one identical but external. The external pot is hooked up via linkage to the mechanisim. Get a servo shaft coupler and a threaded rod for the jackscrew. The endpoints can be adjusted by the external pot's linkage. You need to fab a little simple hardware but its no biggie at all.

Pretty simple, cheap and powerful! All the parts are at Servocity.com
SilentHunter is offline Find More Posts by SilentHunter
Last edited by SilentHunter; Dec 20, 2010 at 09:51 PM.
Reply With Quote
Old Dec 20, 2010, 10:31 PM
Registered User
LuvEvolution7's Avatar
St.Catharines, Ontario
Joined Jan 2009
10,377 Posts
I'de like to see this setup, if you are going to do it. I've thought of something similar, to drive the landing gear on my Jaguar. should work................I THINK!!!!!!!!!!!!!!! LOL.
LuvEvolution7 is offline Find More Posts by LuvEvolution7
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion B-1B Bomber Flexserve Foamies (Kits) 31 Nov 18, 2010 06:04 PM
Discussion LX B-2 stealth bomber decals? aferguson Foamy EDFs 1 Sep 27, 2010 07:15 PM
Discussion Bomber Field B-17 Gathering & Scale Big-bird Fly-in foxflier Fuel Power Events 0 Sep 06, 2010 05:49 PM
Discussion Estes Saturn 1B, Titan IIIE, Alien Explorer, and V-2 on EBay Ending Mon. Sep. 6, 2010 Richard N Rocketry 2 Sep 06, 2010 03:59 PM
21 ft. span B-29 Bomber with RC X-1 Rocket Jeff Meyers Giant Scale Airplanes 11 May 18, 2007 01:18 AM