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Offline Edmund Blackadder

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Blackadder's Thunderhawk Project
« on: March 31, 2013, 09:05:49 AM »
Blackadder's Thunderhawk Project

Wait! I don't have a Thunderhawk thread on this forum? This will never do.

But the whole thing may be moot as there is a lot of speculation in the Яussian community about a release of a Plastic Thunderhawk.

This photo is in the latest issue of WD.



Can anyone post a larger image?

Anyway Eventually I shall have to resume building my over-sized T'hawk just to complete it as it is already in a fairly advanced state.

 http://i.imgur.com/30Wgy.jpg


 http://i.imgur.com/hkgm3.jpg


 http://i.imgur.com/O94R1.jpg


and now I am about to be upstaged by GW but wait?

There are significant similarities between that GW T'hawk and mine.....

Could I get them on © infringements? XD

Offline Benis

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Re: Blackadder's Thunderhawk Project
« Reply #1 on: March 31, 2013, 12:35:10 PM »
I am always impressed with the amount of detail you can knock out of regular plastic card; those engine pieces look amazing!

Offline Edmund Blackadder

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Re: Blackadder's Thunderhawk Project
« Reply #2 on: April 1, 2013, 07:22:23 PM »
First we'll start with where I am on the overall T'hawk. It's been a year since I worked on this so it will take me a bit of time to come up to speed. 

http://i.imgur.com/KiICIfS.jpg


http://i.imgur.com/uDhEYKI.jpg


As I recall I was working on the retractable landing gear so that will be a good place to start.............. ...

Offline Shas'La robo

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Re: Blackadder's Thunderhawk Project
« Reply #3 on: April 1, 2013, 08:00:27 PM »
Wait! I don't have a Thunderhawk thread on this forum? This will never do.

Blackadder's Scratchbuilt Thunderhawk

Found it!

robo
hug cover, shoot the big ones, and cripple the fast ones. if those cant be achieved, kill em all.  8)

Offline Edmund Blackadder

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Re: Blackadder\\\\\\\\\\\\\\\'s Thunderhawk Project
« Reply #4 on: April 2, 2013, 08:20:06 AM »
Thanks, I did all kinds of searches on this forum for a T'hawk thread authored by me but somehow failed. (It has happened on a few other forums as well.) perhaps a 'Mod' can exercise divine power and append this thread's replies to my original, I would greatly appreciate it.................

Post Merge: April  2, 2013, 03:03:28 PM
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After a concentrated search I found this image also from WD I believe which shows a very pristine looking model with extremely crisp lines ( no moulded in warping) a different volcano cannon than the FW production model, no Aquila on the cockpit which I believe was moulded in. Not that I am anxious for a plastic T'hawk which renders my project moot but there seem ample evidence for the suspicion that one is forthcoming.

http://i.imgur.com/XNkco1b.jpg



RETRACTABLE NOSE LANDING GEAR

Started on the nose gear retractable landing gear today. I want a fully movable gear that retracts and extends and there is a very limited space between the gear bay and the floor of the cargo bay. The big issue is the collapsible oleo strut which acts as a shock absorber when the aircraft lands. I lost a couple of hours sleep the past few nights coming up with a workable design.

We'll see how it works out................ .........

http://i.imgur.com/DXEJoqL.jpg



http://i.imgur.com/M6BLTGj.jpg



http://i.imgur.com/GZNXRuZ.jpg



http://i.imgur.com/DdRGWVj.jpg



http://i.imgur.com/7BE7gdz.jpg


Post Merge: April  2, 2013, 05:50:42 PM
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There you see I've come back to this refreshed with new ideas and a firmer grasp on modeling techniques and not afraid to go 'where' a year ago I would have feared to tread..............

http://i.imgur.com/568HB4O.jpg



http://i.imgur.com/5t0yd9m.jpg


This may actually work!

Post Merge: April  3, 2013, 09:47:43 AM
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The Retractable Nose Gear Cylinder Shock Strut Mechanism

Below is the system I came up with to allow the nose gear to retract and still compress when the weight of the model is on the extended foot plate.

This will allow the foot plate to extend forward to act as the nose gear bay door as in the original model but still be the landing foot pad when the gear is deployed.

The mechanism works but I still need to get the length right and I may need weaker springs. I'll have to see when the gear is installed in the model.

The components manufactured....... .........
http://i.imgur.com/UHAqKgB.jpg


the components partially assembled.......... ......
http://i.imgur.com/zAshg9i.jpg


The shock strut in full extention.......... ...
http://i.imgur.com/xUUvXWB.jpg


Compressing the shock strut allows 1.5 cm of travel...........
http://i.imgur.com/X5sPaE5.jpg


Post Merge: April  3, 2013, 03:54:06 PM
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I got this idea in the middle of the night and wanted to implement it before I forgot about it. I've not forgot about the Warlord............ . I just need a change of locus.

Nose Gear Retract Cylinder

The way I look at it is a good way to improve engineering skills is to push your limits.

The nose gear piston attach point is in place, now for the cylinder and trunnions.......... ..

http://i.imgur.com/gRY64zh.jpg


Of course building toy fantasy aircraft may not be high on your priorities. :D
« Last Edit: April 3, 2013, 03:54:08 PM by Edmund Blackadder »

Offline Edmund Blackadder

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Re: Blackadder\'s Thunderhawk Project
« Reply #5 on: April 4, 2013, 03:09:30 PM »
Nose Gear Installed Temporary

The nose gear mount plate is temporarily taped in place to see what the gear extension looks like. The foot plate is just attached with loose fitting plastic bushings.........

In the side view below the gear strut is canted forward but it can be set to vertical, I still ambivalent about that, I should have taken a vertical image position.
 
http://i.imgur.com/qQafiEF.jpg


Dang! the bushing slipped out when I was setting the pose. There is too much gear well showing in the cargo bay. I'll have to shim up the exterior reinforcement plate.

http://i.imgur.com/WLkfaDw.jpg


A quarter view just because it looked good to me. Note the negative dihedral to the wings. The attach bolts are loose.............. .

http://i.imgur.com/Qe0lnjC.jpg


Now that the gear is satisfactory I disassemble it to show the components.........

Post Merge: April  5, 2013, 09:34:07 AM
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Below is the nose landing gear removed from the gear well shown in the completely collapsed condition. The shock strut (oleo strut) is completely compressed so it will fit into the well. I am in the process of adding the gear well detail at the moment. Where does the time go.............


http://i.imgur.com/SmISksz.jpg


Here we see all the nose gear components including the foot pad and gear well reinforcement panels on the left. The lock pin forward of the foot pad, the gear well itself at the right rear. Forward of that is the shock strut and retract cylinder with their associate trunnion pins.

http://i.imgur.com/NsCl05l.jpg


Here is the assembled nose gear showing the shock strut in collapsed position and the exterior of the well showing the axle sleeves for the trunnion pins that lock the gear trunions in place but allow them to swivel.

http://i.imgur.com/8QcmyX2.jpg


Front view of the nose gear assembled with the shock strut in full extension and the retract cylinder in full extension and foot pad attached.
 
http://i.imgur.com/IfYIiRg.jpg
« Last Edit: April 5, 2013, 09:34:10 AM by Edmund Blackadder »

Offline Boss Ard'Ragger

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Re: Blackadder's Thunderhawk Project
« Reply #6 on: April 5, 2013, 11:41:35 AM »
I am amazed and in awe of your modeling abilities been following this project and your titan with ever growing interest.  Keep up the awesome work Black 8)
You Boyz wanna live forever?!  Waaaaagh!

Offline Edmund Blackadder

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Re: Blackadder's Thunderhawk Project
« Reply #7 on: April 6, 2013, 03:50:16 PM »
Thanks, I'll be resuming the Warlord soon I just needed a break. A couple of days ago I got this epiphany while dozing (But I took a wiz and it went away..........).. No about how to make retractable landing gear and I had to see it through before I forgot my idea..........

Barely had room for the light module bitz on the foot pad although everything else fitted with room to spare. still have so detailing to do on th top surface of the landing pad and the tread on the underside. but I am winding down for today and considered it time for an update.
http://i.imgur.com/qatEePo.jpg


Still can't make up my mind whether to cant the gear forward or make it vertical.
http://i.imgur.com/k4tFtCO.jpg


The detail inside the gear well is pretty much complete but I still need rivets etc on the reinforcing framework.

Offline Edmund Blackadder

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Re: Blackadder\'s Thunderhawk Project
« Reply #8 on: April 8, 2013, 06:16:46 PM »
Taking the TDA's observation to heart I decided to incline the nose gear angle for a more streamline profile and less extreme angle for the nose cargo ramp. Now that I have established that area I can start on the retractable main gear.

http://i.imgur.com/5ziIiAJ.jpg


http://i.imgur.com/dfd3sjh.jpg


Post Merge: April 10, 2013, 05:30:13 PM
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This is one of the sections that I attribute my shelving the project for a year. I was satisfied with neither FW landing gear nor the 3D rendering.

The FW model didn't appear to be functional in that the gear would never fit into the well given the actuating cylinder and trunnion placement; the whole design just wasn't workable. Likewise the 3D model showed a ridiculously minuscule gear. Too small!

I managed to achieve a good compromise (IMHO) increasing the size of the landing pad by twice the area and changing where the gear is actually stowed. Unfortunately at the expense of internal storage area but hey it's a military vehicle so a gear cylinder in the living area isn't offensive to yer average crewman. 


http://i.imgur.com/FeDZYQH.jpg



http://i.imgur.com/wQGCxN5.jpg



http://i.imgur.com/fNhFPLA.jpg
« Last Edit: April 10, 2013, 05:30:15 PM by Edmund Blackadder »

Offline Edmund Blackadder

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Re: Blackadder's Thunderhawk Project
« Reply #9 on: April 17, 2013, 04:28:34 PM »
Revamp of the retract mechanism

I've tried all ways to get these to operate and there's only so much crap you can cram into a specific space. I've eliminated the trunnion axis and the shock strut and still no go. I guess that's why the aeronautical engineers get the big bucks. although the L1011 and DC-10 were total fiascoes for the airline industry........... .

pictures to follow............. ..

I took a few days off to lick my wounds. :(

Now I believe I have come up with a solution...

BTW I consider having an actual plan of what I am attempting to do cheating. XD

http://i.imgur.com/GEzOXJW.jpg


http://i.imgur.com/Ri23OTH.jpg


http://i.imgur.com/kpDofFf.jpg

Offline Edmund Blackadder

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Re: Blackadder\\\\\\\'s Thunderhawk Project
« Reply #10 on: July 5, 2013, 04:44:35 PM »


Thunderhawk Exhaust Cones

Normally I don't use bottle caps and such on my models because thats what they look like but I couldn't pass these up at least for a tryout.

http://i.imgur.com/otMVwKe.jpg


The ribbing is perfect using every third segment for a stringer and dividing the cone into thirds along it's length worked out perfectly

http://i.imgur.com/FUAbBUe.jpg



Now where did the Blackadder find such perfect items you may ask? Well it's Shoprite brand Fruny Green Mouthwash bottle caps from the half gallon economy size and as an added bonus I now have a lifetime supply of the stuff.

http://i.imgur.com/jJHuO7i.jpg


Post Merge: July  6, 2013, 12:25:58 PM
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It's Starting to Grow on Me

When I first saw the Thunderhawk quite a few years ago I thought it was the most ridiculous looking transport vehicle ever conceived. but these new iterations have transformed the initial abomination into a hulking brute that actually seems almost airworthy.

Even the engines seem of a size adequate to propel said craft through the welkin.

http://i.imgur.com/nXaWZpd.jpg


These exhaust cones have a lot to them besides being just a nozzle for it seems there is a setup for afterburners at least in the Inquisitor images.

http://i.imgur.com/MvyaKlg.jpg


My big problem now is not being reminded how much they look like peach baskets.......

http://i.imgur.com/pKybQdQ.jpg


Post Merge: July  7, 2013, 07:37:57 AM
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Afterburner Injector Housings

Below are the beginnings of the Afterburner Injector Housings.

I started with strips of sheet styrene about 15 inches long and wrapped around a cylinder of require diameter (in this case a toothpick dispenser) and wrapped around three times to give the housing the requisite thickness for a solid foundation.

http://i.imgur.com/bJwIjF5.jpg


After the glue on the cylinder is dried I beveled the inserted edge and scored the inner surface of the exhaust nozzle to get a good glue bond and glued the housing into the exhaust cone.

Once dried the housings will be ready for detailing.

Post Merge: July  7, 2013, 11:38:25 AM
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Fitting the Right Wing Engine Exhaust Cone

Anyone following my threads knows I rarely follow any preconceived plan of execution so when something works out this well I am flabbergasted.

The Fruny Green Mouthwash bottle caps worked out perfectly both in diameter and length (I always felt the exhaust cone in the background image and in the 3D rendering were too long to be aesthetically pleasing) but a little cutting with the Dremel rasp carved out a clean bed for the ejector housing base.

Here we see the wing separated into its 3 major components (Excepting the nose cowl) They are Wing Root and engine assembly, Wing and Exhaust cone:

http://i.imgur.com/mCbRHJZ.jpg


And the assembled components dry fitted;

http://i.imgur.com/pgfxESu.jpg


I never glue anything together until I'm 100% sure it works..........

Is there anyway to circumvent the one post per every three days rule? At least when an addendum is added upgrade the post to the current date.............. Most frustrating!
« Last Edit: July 7, 2013, 11:38:28 AM by Edmund Blackadder »

Offline Edmund Blackadder

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Re: Blackadder's Thunderhawk Project
« Reply #11 on: July 9, 2013, 03:00:30 PM »
Serendipity Rears its Ugly Head

Don't hate me because I'm lucky.

Back when I was building the engines in order to bulk up the adjacent wing surfaces I applied box beams to either side of the engines. I had forgotten about them so when I cut into the ends of the engine cowl I found these ready made receptacles for removable stringers attached to the exhaust cones.

http://i.imgur.com/6kchHzJ.jpg


A little care in aligning the plug in stringers and there are plug in exhaust components so access to the battery operated LED lighting.

By pressing on the lens of the flashlight activates the pushbutton switch at the base of the light allowing it to be turned on and off without removal.

http://i.imgur.com/2siqcih.jpg


Now it only remains to colour the cones to glow superheated when the light is activated to simulate afterburners.

http://i.imgur.com/1VFha00.jpg

Offline Shas'La robo

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Re: Blackadder's Thunderhawk Project
« Reply #12 on: July 9, 2013, 08:01:24 PM »
That engine glow is so beautiful and 'realistic'.
How will it look after being painted??

robo
hug cover, shoot the big ones, and cripple the fast ones. if those cant be achieved, kill em all.  8)

Offline Edmund Blackadder

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Re: Blackadder\\\\\\\'s Thunderhawk Project
« Reply #13 on: July 10, 2013, 07:32:36 AM »
The Nose Cowling

Back (Egad!) so many years ago when my son first started this project I helped him out by shaping the nose cowls out of PVC pipe. I had no concept of the scale of a Thunderhawk but I figured on an aircraft of this size that a man could stand upright in the intake duct.

I used a table top belt sander to obtain a satisfactory rough shape and that is where I left the cowls assuming once the rest of the 'Hawk was well underway I could always polish them to a finished appearance.

Now 4 years later and I having inherited the project my son being away in college and no time for such things I take up the completion of the cowlings still as yet unpolished.

Below you see an assembled cowl and the three components that make it up

http://i.imgur.com/6Rk1knl.jpg


I plan to make the fans today.............

Post Merge: July 10, 2013, 10:42:53 AM
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How Many Blades?

After viewing a number of intake fan assemblies of Thunderhawks I have decided on 16 blades; the reason being expediency.

Were I to go more and readily divide the fan by 4 the next logical number of blades would not be 20 but 24. 20 is out because of the necessity of dividing each quarter of the disk into five blades. Since the disk is only 25 mm in diameter the chances increase having different width blades regardless how sharp your pencil/ scribe may be. 24 blades though easier to calculate also increases the margin for error.

If memory serves an L1011 Rolls Royce engine has around 32 blades but those blades are close to a meter long (From the center of the hub) and that is a much larger aircraft than the Thunderhawk is purported to be.

Post Merge: July 10, 2013, 02:36:32 PM
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Fan Manufacture an Easier Way for Larger Fans

16 blades seems the best for while easy to fit accurately on a disk it is busy enough to simulate an intake fan especially if the cuts are made on an angle to augment the illusion of a fan.

For that reason I have selected styrene 1,0 MM thick.

I began by dividing the disc into quarters:

http://i.imgur.com/0X8BhzN.jpg


and then into 16 segments the ends of the blades coincidentally worked out to 5,0 mm wide.

I then glued a small hub to the center of the disc to act as a guide for the inner end of the cut (To prevent the blades from being cut off completely.):

http://i.imgur.com/NkfqUMw.jpg


Employing my chisel blade I cut into each segment at approximately a 45° angle so the edges of the blades appear to overlap.

http://i.imgur.com/CruF7Ux.jpg


After all the cuts were made I glued a small disc to the back of the fan to reinforce the axis point and with needle nose pliers twisted the blades to give a fan like appearance.

Post Merge: July 11, 2013, 04:36:04 PM
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A Mélange of Ideas

There are so many different styles of nose cowls for this model most of them wrong but some good points to most as well.

I am picking and choosing that which takes my fancy from each.

The image below shows some interesting features and an out right wrong namely the fan too close to the front of the cowl.

http://i.imgur.com/cbp0I6R.jpg


What purpose the flaps are on the outer circumference of the cowl is unknown but they are an interesting feature and therefor included.

http://i.imgur.com/99f2s6f.jpg
« Last Edit: July 11, 2013, 04:36:11 PM by Edmund Blackadder »

Offline Edmund Blackadder

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Re: Blackadder\'s Thunderhawk Project
« Reply #14 on: July 12, 2013, 05:55:47 PM »
The Model I Love to Hate

It's no secret I am not enamoured with the Thunderhawk but when I see this engine 10 inches /250 MM long I have to admit it's growing on me. The nose cowl is roughed in and mounted and the overall look is pure sex. I can't wait to start detailing these engines............ ...

http://i.imgur.com/4s6Rfiu.jpg


http://i.imgur.com/Fv5oQ3T.jpg


http://i.imgur.com/kVTfSCH.jpg


http://i.imgur.com/KldKt1B.jpg


http://i.imgur.com/6ZDBR90.jpg


I know my model is a bit larger than the FW original but out of curiosity what is the length of the FW engine nose and exhaust cowls included?

Post Merge: July 14, 2013, 07:14:56 AM
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The More I Watch the Avengers the More it Seems Absurd

Watched 'The Avengers' for the third time last night using it as a backdrop for the tedious snaking of the afterburner piping on the three exhaust cones.

Honestly I can't see how this movie got the critical acclaim it almost universally received.

Anyway I am very close to finishing that task; mebbe I'll watch the equally ludicrous Thor tonight and finish it up tonight.

http://i.imgur.com/dl3flKg.jpg


http://i.imgur.com/kevrXfL.jpg


The beauty of watching such a movie in the process of performing mindless endeavours is both tasks being equally boring the two activities cancel each other out and before I knew it was bedtime. HA!
« Last Edit: July 14, 2013, 07:14:57 AM by Edmund Blackadder »

Offline Edmund Blackadder

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Re: Blackadder\\\'s Thunderhawk Project
« Reply #15 on: July 15, 2013, 04:40:41 PM »
Exhaust Mounted

Yeah everyone is tired of the same beaten horse but I wanted to see what the engines looked like attached to the fusilage.

http://i.imgur.com/5cUIYeH.jpg


http://i.imgur.com/STrKyrr.jpg


http://i.imgur.com/brPibM6.jpg


Not bad for gov'ment work.............

Post Merge: July 16, 2013, 07:51:10 AM
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The Fearful Symmetry

I forgot the front view and side view which displays the symmetry of this monster but truth be know regarding length and wingspan this vehicle is about the same size as the smallest passenger jets say a DC9-30  or a three holer B727 100 series.

http://www.aviastar.org/pictures/usa/mcdonnel_dc-9_1.gif

Even my version which would be designated a "stretch" is no bigger than a B727 200 series.

http://www.aviationexplorer.com/Various_Aircraft/Boeing_727_3_View_Schematic_Chart.jpg


http://i.imgur.com/Ky07wvp.jpg


http://i.imgur.com/0sEAALF.jpg


http://i.imgur.com/7DDNhZx.jpg


Post Merge: July 17, 2013, 04:36:17 PM
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Rivets Gaah!

Rivets, the bane of scratch building but it has to be done so heres my relatively painless method of applying rivets.

I chose 0.035 inch/0,88 mm styrene rod for my cowl rivets and securing the rivets with Ambroid PROWELD thin liquid cement.

All the tools necessary are visible in the image below and I cannot stress too much to use a NEW # 11 blade in your 1/4 inch Xacto handle.

http://i.imgur.com/JqXhjpj.jpg


After you have scribed a pencil line on the work Use your chisel blade to cut a supply of rivet disk (usually 10 or 15 pieces)

Using the tip of the # 11 blade pick up the rivet and while holding the ready rivet take your cement brush and put a dot of cement on the work piece and slightly press the rivet disk to the work holding it in place for a few seconds.

Continue procedure ad nauseam.

After the glue is dried use the steel emery board to dress the rivets to the required height.
« Last Edit: July 17, 2013, 04:36:20 PM by Edmund Blackadder »

Offline Edmund Blackadder

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Re: Blackadder\'s Thunderhawk Project
« Reply #16 on: July 18, 2013, 03:34:36 PM »
Vertical Stabilizer At Last

A bit of departure from my usual building technique; I could conceive of no reason to make the tail as a separate modular assembly I probably won't be removing it for any reason and it is a simple assembly.

I'm starting from a light weight but sturdy framework slightly modifying where it attaches to the engine exhaust due to my taking what I consider the best ideas of the two 3D versions I am working from.

Although I intend to add a movable rudder (not present in the background wallpaper) and taper the control surface to the trailing edge. but the first order is to get the proportion correct.

http://i.imgur.com/jmisk1V.jpg


Post Merge: July 18, 2013, 07:46:26 PM
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Vertical Stabilizer Interior

This seems like a good way to build a rudder system. At any rate its rather strong and with the exo-armour should withstand regular usage.

The extra long rod is the rudder hinge axis and the cut out forward of the rod will house the counterweight hinge extensions.

http://i.imgur.com/7ivZ50x.jpg


The rear angle looks good but the front appears to be more extreme

http://i.imgur.com/KKlcXA2.jpg
« Last Edit: July 18, 2013, 07:46:29 PM by Edmund Blackadder »

Offline Edmund Blackadder

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Re: Blackadder's Thunderhawk Project
« Reply #17 on: July 21, 2013, 10:16:50 AM »
Vertical Stabilizer Sheeted

I sheeted the vertical stabilizer with 0.030 inch styrene because I want to add an airfoil to the surface. The notches are cut out and framed and the rudder axis threaded through the bushings.

http://i.imgur.com/2Hrrb7t.jpg


Next I cut out the superfluous material I used for a trueness guide to insure the slots were parallel and would not bind when the rudder went through its travel extremes:

http://i.imgur.com/HlkrfxF.jpg


The final step of the sheathing and dressing the slots for homogeneity and I was ready to build the rudder core

http://i.imgur.com/oR1XPKE.jpg

 


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