Beyond The Sprues
Modelling => Completed GBs => Group and Themed Builds => Vertical Takeoff GB => Topic started by: Tophe on June 02, 2015, 12:18:58 AM
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My project here is to draw tail-sit dérivatives of famous warbirds (fighters I think).
I know there was a true Supermarine tail-sit project made from a Spitfire, and I built a Twin Yuriev Kit-1 (Unicraft 1/72, derivative of the Soviet P-39 Aerokobra), but I plan to add many more, with twin-fuselage rather often. ;)
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The P-82ST was the first of them (Twin-Tailstang):
(http://www.kristofmeunier.fr/P82-51C2_db.jpg)
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As three points define a plane, and a three-legged stool is the simplest, stablest form,
does it not follow that tail-sitters should have three fuselages?
;)
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3-fuselage tail-sit Mustang? I built one in the past, but I am willing to draw one more soon.
(http://www.kristofmeunier.fr/t_IMG_5721.JPG)
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Before I try drawing a 3-fuselage one, I modified the twin-fuselage classical one:
seeing the Unicraft 1/72 Kit-1/P-39 tail-sitter with huge rotors/propellers, I realised my Twin-Tailstang needed bigger blades, but the other rotor provides a limit (intermeshing rotors from different engines is a crash recipe), so I lengthened the port nose, and now they do not intermesh, even with increased size:
(http://www.kristofmeunier.fr/P82-51C2_dd.jpg)
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I am not sure the distance between rotors is big enough for a safe flight:
(http://www.kristofmeunier.fr/P82-51C2_de.jpg)
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Tophe, they could be counter-rotating intermeshing airscrews, like the Kamov helicopters have.
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Thanks for this technical detail.
On the 3-fuselage one, required by jcf (drawing below), should the third part have a double counter-rotating rotor? (for balance and/or for fun...)
(http://www.kristofmeunier.fr/P82-51C2_df.jpg)
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On the 3-fuselage one, required by jcf (drawing below), should the third part have a double counter-rotating rotor? (for balance and/or for fun...)
As nobody seemed crazy enough to confirm (or deny), I have tried, and this it: I recognize the mass-produced Twin-Tailstang, built in 100,000 copies by North-American, Misubishi and Yakovlev (33,334+33,333+33,333 copies):
(http://www.kristofmeunier.fr/P82-51C2_dg.jpg)
Uh? When did this manufacturing work occur? I don't know in "years" (in Christian and Japanese calendars), but this was last night ;)
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Ahem, maybe... this worldwide P-82ST (XP-82ST, YP-82ST and mass-produced P-82ST then F-82ST) was all a dream... :icon_crap: :-\ ???
BUT the P-51STD and P-51STB below were true-life story (all North-American built, 10,051 copies + 51 copies):
(http://www.kristofmeunier.fr/P82-51C2_dh.jpg)
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Opposite to the Tail-Stang was the Teru-Zero, and opposite to the Twin-Tail-Stang was the Tsuin-Teru-Zero: (guaranteed 100% true?)
(http://www.kristofmeunier.fr/a6m_Zero_ao.jpg)
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Many German archives have been destroyed, and I found no trace of a single fuselage twin-rotor Bf-109 :icon_crap: , but a zwilling Bf-109Z tail-sitter (single-seater) has been built and flown:
(http://www.kristofmeunier.fr/Bf109Z1e_e.jpg)
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The best Tail-Stangs were produced by Sikorsky (PH-51D and PH-51B). 51+5 copies were built for the Philippines. They had a single main rotor, completed by an auxiliary antitorque rotor:
(http://www.kristofmeunier.fr/P82-51C2_di.jpg)
EDIT: according to last minutes discovery, it seems 5 copies were also built and sent to protect the PHarm of the US president Roosevelt (for rest after work)
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I found in my old archives P-38 helicopters:
(http://www.kristofmeunier.fr/r_P38eclairC_aaaav.JPG)
but I am sure there were P-38 VTOL airplanes too, I am searching again.
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Yes, at last I found the main PV-38 verticalning, but there were (at least) 2 other ones, wait...
(http://img.photobucket.com/albums/v670/Tophe2712/2015/P38eclairL_ack2_zpsdterynhr.jpg)
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The P-38TR Twin-Rotor-Lightning was a two-seater:
(http://img.photobucket.com/albums/v670/Tophe2712/2015/P38eclairL_acm_zpsogpbdyqv.jpg)
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The P-38TR-1 was the single-seat version, more "normal":
(http://img.photobucket.com/albums/v670/Tophe2712/2015/P38eclairL_aco_zpsi5qknniw.jpg)
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The V-38NL was another version, but nobody remembers what NL was meaning, maybe No Ladder (for the pilot to climb in the cockpit). The work of Historian is not easy when archives have been destroyed (or glued)...
(http://img.photobucket.com/albums/v670/Tophe2712/P38eclairL_acq_zpszexdyvnm.jpg)
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The VTOL V-38A was not a tail-sitter and was requiring a too big area on the ground, so its 4 fans were rotated into the V-38ATL TaiLsitter (no relation with the French "Avions Très Légers" = Very Light Airplanes, décades later):
(http://img.photobucket.com/albums/v670/Tophe2712/2015/P38eclairL_acs_zpsmjs3niqw.jpg)
EDIT: Ahem, I am not sure the connection booms/rear fans is right here above on the right, I will probably need to make booms passing through the center of the fans... :icon_crap:
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Here is/was the corrected V-38ATL:
(http://img.photobucket.com/albums/v670/Tophe2712/2015/P38eclairL_act_zpsu5dshxo2.jpg)
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Aesthetically, the best tailsitter of this time may have been the Macchi Mc-205BP Bifusoliera Posacoda:
(http://www.kristofmeunier.fr/C205Z_a.jpg)
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The TCV-51D was not exactly a "warbird" but sort of. It was a golden eggplane cartoon toy 1/144 for children of billionnaires, in order to get big money for building the scale 1 serious ones:
(http://www.kristofmeunier.fr/P82-51C2_dK.jpg)
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The TCV-51D was not a "82" Twin-Tailstang model, but a "51D" scale model of this DD-51D Double-Tailstang:
(http://www.kristofmeunier.fr/P82-51C2_dl.jpg)
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Liking them all Tophe, you just keep cranking them out, don't know how you do it :)
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Thanks a lot, Master Mushi!
Well, the tail-sitting focus went in other directions too, mainly for stability on the tiny landing areas. With rear wings like on the PC-51D and B Canarstang:
(http://www.kristofmeunier.fr/P82-51C2_dm.jpg)
EDIT: "P.C." for Personal Computer (instead of Pursuit Canard) was existing, but this was science-fiction, pure fantasy (like a computer giant machine in each home!!!), while tail-sitter airplanes were a very serious affair...
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On this great invention road, were designed the Deltastang DP-51D and 51B, discarding tailplanes like willing to discover the secret of our Flying Saucers!:
(http://www.kristofmeunier.fr/P82-51C2_dn.jpg)
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Look: Earth-humanoids, for curing the stability problem of the Deltastangs, could have invented this!:
(http://www.kristofmeunier.fr/P82-51C2_do.jpg)
Like Flying Saucers! of their own!
(and their witch-doctors were willing to apply mental force instead of piston/fuel/rotors, coming to our level of technology! so these awful two-feet animals could have comen here and invaded all! Fortunately, starvation killed all men. Saving Civilization, saving our red planet. Thanks Göd!)
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On this great invention road, were designed the Deltastang DP-51D and 51B
Like North American made the Deltastang tailsitters from simple P-51s, the Soviet made the Yuriev Kit-1 delta tailsitter from P-39 Aerokobra
(see the 1/72 great model at http://www.unicraft.biz/on/kit1/kit1.htm (http://www.unicraft.biz/on/kit1/kit1.htm) )
But the capitalistic Bell engineers made a cheaper tailsitter from the standard P-39 Airacobra: V-39 Tailsacobra:
(http://www.kristofmeunier.fr/cobra_z.jpg)
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the Soviet made the Yuriev Kit-1 delta tailsitter from P-39 Aerokobra
(see the 1/72 great model at [url]http://www.unicraft.biz/on/kit1/kit1.htm[/url] ([url]http://www.unicraft.biz/on/kit1/kit1.htm[/url]) )
As well, the Spitfire tailsitter is famous ("Real-World" project, they say, I don't know what that means), but the 2-seat Twin-Spitfire tailsitter is a consequence of the tail-sit fever I described in the Stories topic http://beyondthesprues.com/Forum/index.php?topic=5501.0 (http://beyondthesprues.com/Forum/index.php?topic=5501.0) ...
(http://www.kristofmeunier.fr/Spitfire_zo.jpg)
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The XV-38A, X and C were other Lightning tail-sitters (the C was the reason why the French SNECMA paid copyright to Lockheed for the well-known project Coléoptère):
(http://www.kristofmeunier.fr/P38eclairL_add.jpg)
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Love these latest iterations :-*
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Thanks! I plan to draw next the "real" Spitfire tailsitter (that I scanned recently to send to a SecretProjects friend). This is almost "too much true" for being here, but it could be the basis for twin-fuselage derivative or other dreams...
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Here are they:
- The Supermarine Spitfire 4040 is a VTOL (unbuilt) true project, found as 3-view in the book "Spitfire, the History" by Morgan+Shacklady, Key publishing
see also http://www.secretprojects.co.uk/forum/index.php/topic,3602.0.html (http://www.secretprojects.co.uk/forum/index.php/topic,3602.0.html)
- The Supermarine Twin-Spitfire 4042 is a VTOL dream that occured in the 1944 tail-sit fever "glue141" explained at http://beyondthesprues.com/Forum/index.php?topic=5501.0 (http://beyondthesprues.com/Forum/index.php?topic=5501.0)
(http://www.kristofmeunier.fr/Spitfire_tailitter_b.jpg)
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Of course, before the Supermarine 4040, rather far from a standard Spitfire, were the Ultramarine Spitfire Mk.14T and Mk.22T tailsitters:
(http://img.photobucket.com/albums/v670/Tophe2712/2015/Spitfire_zp_zpshzqxcaev.jpg)
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In the Twin-Spitfire family, of course there were many other different projects of tailsitters: half-bubble, double-bubble, single-bubble, bubble-less-single-seater, no-seat-UAV:
(http://www.kristofmeunier.fr/Spitfire_zq.jpg)
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Of course, engineers of the 1940s were clever and wise: they understood perfectly that tailsitting was not the only VTOL-way. But the tilting-fan test (take off position on the left, theoretical cruise in the center) failed to take off actually, and the final P-38 fan-VTOL became another tailsitter (on the right below)...
(http://www.kristofmeunier.fr/P38eclairL_aea.jpg)
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The HA-38 "Harrier" was also a famous failure, having tail-sit derivatives:
(http://www.kristofmeunier.fr/P38eclairL_aec.jpg)