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View Full Version : The Most Realistic Fighter: North American F-86A-5 Sabre



IAB98
06-15-2014, 09:14 PM
Hello everyone. I'm making this post to show off my kinda new F-86. It took me from September 23rd to Christmas day to finish this beautiful jet but it was totally worth it. Check it out: http://lbp.me/v/qs9f0d5
https://www.youtube.com/watch?v=O_sNeO2c0OA
If you want to see how much work went into the airplane, you can watch this slideshow of all of my notes and planning before and while I built the aircraft:
http://youtu.be/KEyA3yPhrlM
*all photos taken on my Nine-TailedFox4 account

HUD
Now I'll get into he capabilities of this aircraft. I designed it to be as realistic as possible and not much of a fighting aircraft because of this. I designed it with no assistance whatsoever. The first feature is the new HUD. It gives you percentages of your throttle, indicated airspeed, and altitude. Percentages allow the airplane to be more universal rather than having different values than other people. I can simply say I am at 100% of my top speed or at 100% of the max altitude in LBP2 empty levels. My Sabre also has an external menu so you can access some of the hatches and operate external functions of the aircraft. These include opening the socket panel, accessing the entry step, and operating the canopy.
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Detail
I payed special attention to every detail I could. I have made realistic lighting effects, external panels, internal details, cockpit details, and improved wing geometry. The cockpit is mostly made out of decoration and custom stickers. The main console is exactly like the real one and I tried my best to get the positioning on the throttle and stick correct. The ejection seat is also very detailed. On top of cockpit detail, my Sabre has a very rudimentary internal structure consisting of the real intake shape and the General Electric J47 engine. The wing structure allows a relatively accurate shape but with control surfaces. The same is true for the elevators.Opening panels also have details. The airplane is also to scale in all of its proportions if sackboy was the equivalent of a 5 foot 9 male.
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Flight Logic
The flight logic was probably the second most time consuming aspect of this plane to build other than the airframe. It is by far the most advanced piece of tech on this jet. The thrust system separates throttle, thrust, and airspeed to give a realistic delayed effect as well as realistic spool up times and sound FX. The main things affecting the airspeed of the aircraft are thrust, attitude, turn speed,and airbrakes. All of these things are factored in to find the net forces on the aircraft to provide realistic physics. My Sabre also has realistic lift that varies with the positioning of the flaps, airspeed, and angle of attack. By having realistic lift, realistic stalls are also possible. For instance, in an accelerated stall the airplane finds the G load on the aircraft, finds the square root of that G load and multiplies the answer by the normal stall speed under 1 G.The airplane's throttle and controls are also designed to be used with the Thrustmaster HOTAS X. All of this adds up to a massive array of microchips:
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Weapons
Since this is an F-86A-5, it is armed with 6X M3 Browning aircraft machine guns with a total of 1602 rounds. My Sabre uses AP, API, and has the additional option to use API tracers that will shoot once for every 5 AP or API rounds. Each gun is its own independent system so they jam, run out of ammo, and overheat. There is also somewhat realistic ejection. This simulates the real life difficulties of operating the Sabre's weapons system. To help aim these formidable guns, my Sabre comes equipped with the MK18 manual ranging gyroscopic gunsight. It works by leading the target based on the range you set the gunsight at. To raneg the MK18 accurately, you line up the wingspan of the enemy aircraft (must be 7 layers wide) with an imaginary circle you draw along the inner diamonds of the gunsight. At this point the moving part of the gunsight will point in the exact direction where the bullets will hit. Tests have shown that when used properly, about 95% of the rounds you fire will hit the target no matter how they are maneuvering. This is exactly the same procedure of real thing.
Impacting bullets:
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Gunsight:
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Finally Heres a pic of 48-178 in real life!:
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biorogue
06-15-2014, 10:43 PM
this is really really cool. I saw your stuff over on LBN. Really great work.

Ayneh
06-16-2014, 05:23 PM
That looks pretty awesome. I especially like the sound effects of the engine.


The flight logic was probably the second most time consuming aspect of this plane to build other than the airframe. It is by far the most advanced piece of tech on this jet. The thrust system separates throttle, thrust, and airspeed to give a realistic delayed effect as well as realistic spool up times and sound FX. The main things affecting the airspeed of the aircraft are thrust, attitude, turn speed,and airbrakes. All of these things are factored in to find the net forces on the aircraft to provide realistic physics. My Sabre also has realistic lift that varies with the positioning of the flaps, airspeed, and angle of attack. By having realistic lift, realistic stalls are also possible. For instance, in an accelerated stall the airplane finds the G load on the aircraft, finds the square root of that G load and multiplies the answer by the normal stall speed under 1 G.
Is the lift essentially an up mover being fed different values?

IAB98
06-16-2014, 06:46 PM
That looks pretty awesome. I especially like the sound effects of the engine.


Is the lift essentially an up mover being fed different values?

yes Pretty much. It adds up the values from the flaps, airspeed, and angle of attack. It basically changes the mover set. The stall calculation were done by me so the plane knows when it should stall.

wally-217
06-26-2014, 07:07 PM
How did you make the wings (the actual wing shape and not the sticker, etc.)?

IAB98
06-26-2014, 08:30 PM
How did you make the wings (the actual wing shape and not the sticker, etc.)?

I call it the hybrid wing. Basically my friend taught me how to twist a ruler a long time ago and i mastered the technique and started to merge this twisted ruler with regular 3D layer wings. With careful designing I figured out how to add flaps. You can also twist decorations. If you look on that second video there, somewhere in the vid it shows my design plan for this particular wing if you want to make a Sabre wing XD.

Mr_Fusion
06-28-2014, 08:14 AM
The first thing I did in the level was pull all the stickers off to see how you made the angles and detail. Some really clever design tricks.

And what I would assume is some very tricky logic setups!