Rainer Hoffmann Posted December 2, 2018 Share Posted December 2, 2018 (edited) Dear fellow modellers, I haven't logged in to the forum for ages and I have probably missed a ton of great build threads ... I had a lot of work (which is good as I'm self employed) and a major home improvement project needed my attention. And then I had some health issues. Nothing serious, but very annoying with lots of trips to physicians. So I had to put modelling on the backburner. However, the Viggen is NOT dead ;-). However, I worked on a detailed drawing of an FB-111A, including many cross sections, that you guys can download once it's finished. Here is a teaser: There are still some questions that need to be answered. Here is one: The FB-111A used three different pylons: the inboard SRAM pivot pylon, a pivot tank pylon and fixed tank pylon on the outboard stations. From the documentation and from the very limited photographic evidendence I have, it seems that neither the pivot tank pylon nor the fixed tank pylon had sway braces. That seems a bit unusual. Can anyone confirm or disprove this? Thanks for your help Rainer Edited December 2, 2018 by Rainer Hoffmann Typos corrected Anthony in NZ, Trak-Tor, LSP_Kevin and 2 others 5 Link to comment Share on other sites More sharing options...
Christoffer Lindelav Posted December 2, 2018 Share Posted December 2, 2018 Good to hear you and Viggen are still alive and well. I will keep an eye out for updates on the 37 /Stoffe Rainer Hoffmann 1 Link to comment Share on other sites More sharing options...
Rainer Hoffmann Posted December 2, 2018 Author Share Posted December 2, 2018 Thanks. Stoffe, recently I started working on the main wheel wells, but I have nothing substantial to show yet. Cheers Rainer Christoffer Lindelav 1 Link to comment Share on other sites More sharing options...
John1 Posted December 2, 2018 Share Posted December 2, 2018 2 hours ago, Rainer Hoffmann said: Dear fellow modellers, I haven't logged in to the forum for ages and I have probably missed a ton of great build threads ... I had a lot of work (which is good as I'm self employed) and a major home improvement project needed my attention. And then I had some health issues. Nothing serious, but very annoying with lots of trips to physicians. So I had to put modelling on the backburner. However, the Viggen is NOT dead ;-). However, I worked on a detailed drawing of an FB-111A, including many cross sections, that you guys can download once it's finished. Here is a teaser: There are still some questions that need to be answered. Here is one: The FB-111A used three different pylons: the inboard SRAM pivot pylon, a pivot tank pylon and fixed tank pylon on the outboard stations. From the documentation and from the very limited photographic evidendence I have, it seems that neither the pivot tank pylon nor the fixed tank pylon had sway braces. That seems a bit unusual. Can anyone confirm or disprove this? Thanks for your help Rainer Can't help you on the FB questions but I can tell you that over on ARC, a few months back, there was a pretty involved thread on the FB's external tanks. You can try to look that one up or just post your question over there. A few folks on that board have some pretty in-depth FB experience. Rainer Hoffmann 1 Link to comment Share on other sites More sharing options...
Rainer Hoffmann Posted December 2, 2018 Author Share Posted December 2, 2018 John, thanks a lot. I'll have a look! Cheers Rainer Link to comment Share on other sites More sharing options...
Finn Posted December 2, 2018 Share Posted December 2, 2018 Some a/c didn't require external sway braces for fuel tanks, like the F-104 wing pylons, the F-111 was the same. In case you have seen this: http://aviationarchives.blogspot.com/2017/03/general-dynamics-f-111fb-111-structural.html some useful info there. Jari LSP_K2 1 Link to comment Share on other sites More sharing options...
Rainer Hoffmann Posted December 2, 2018 Author Share Posted December 2, 2018 Thanks, Jari. Yes, that's one of the documents I have and that don't show sway braces on the tank pylons. And of course you are right, the F-104 tank pylons didn't have them either. I should know ... Cheers Rainer Link to comment Share on other sites More sharing options...
LSP_Kevin Posted December 2, 2018 Share Posted December 2, 2018 Good to see you back, and in good health, Rainer! Kev Rainer Hoffmann 1 Link to comment Share on other sites More sharing options...
thierry laurent Posted December 2, 2018 Share Posted December 2, 2018 I am sure Tony can reply to that question...! Rainer Hoffmann 1 Link to comment Share on other sites More sharing options...
Phartycr0c Posted December 2, 2018 Share Posted December 2, 2018 (edited) I wondered where the viggen build went. Good to see you back and well. Edited December 2, 2018 by Phartycr0c Rainer Hoffmann 1 Link to comment Share on other sites More sharing options...
Anthony in NZ Posted December 2, 2018 Share Posted December 2, 2018 Rainer, sorry cant help buddy. But GREAT to see you back on LSP! Rainer Hoffmann 1 Link to comment Share on other sites More sharing options...
Rainer Hoffmann Posted December 3, 2018 Author Share Posted December 3, 2018 Thank you very much guys. I hope to contribute to this great forum in the future. Cheers Rainer Out2gtcha and LSP_K2 2 Link to comment Share on other sites More sharing options...
Out2gtcha Posted December 3, 2018 Share Posted December 3, 2018 Great to have you back Rainer! Rainer Hoffmann 1 Link to comment Share on other sites More sharing options...
wunwinglow Posted December 25, 2018 Share Posted December 25, 2018 Tony is your man. I have a vague recollection of seeing a pic of one of these flying tanked up, and wings fully forward, so the non swinging tanks were toed in by quite a bit. Or is my memory finally going south...? Link to comment Share on other sites More sharing options...
Rainer Hoffmann Posted December 26, 2018 Author Share Posted December 26, 2018 11 hours ago, wunwinglow said: Tony is your man. I have a vague recollection of seeing a pic of one of these flying tanked up, and wings fully forward, so the non swinging tanks were toed in by quite a bit. Or is my memory finally going south...? Your memory is correct. With the wings fully forward during take off and landing the fixed pylons were toed in by 10 degrees. With the wings in the cruise setting (26 degrees) they were parallel to the aircraft centerline. Imagine the drag during take off considering that the FB-111A was, let's say, a bit underpowered ... Cheers Rainer Link to comment Share on other sites More sharing options...
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