Unstable but Stable second edition.
This plane is Actually tailless.
No such thing as vertical stabilizer on this aircraft.
HI
This is my another experimental build which start out as my curiosity and ended up in a build that looks alright and fly good enough to share with you all.
So.... tailless aircraft isn't a new thing in SP but most if not all of them use hidden vertical stabilizer in order to fly.
I think it will be fun to make some fly-by-wire system that mimic real life technique to combat the problem of not having any tail or rudder.
And I've learned a lot in making this craft flyable.
Also it is my first time using PID function because FT formula that I usually write wasn't enough to solve the problem.
Flight modeler note.
This aircraft is not only unstable in Pitch, it is completely unstable in Yaw as well. So I used sort of airbrake on both side of the wings to counter the force of yaw and angle of slip like in real life B-2 bomber does.
It is still some flaw here and there especially at high speed.
In the GIF below you'll see airbrake popping like crazy to counter the slip angle. (not the red one, the red one used for roll)
I hope you all enjoy my build!!
Features:
- 2D thrust vectoring
- Limited post-stall maneuvers capability.
- Completely unstable flight model with Fly-by-funky-tree system. (no rudder and CoL is ahead of CoM)
- Big gun!!!!!!
- Carrier capable
- Custom landing gear
Controls:
- AG1: Supermaneuvrability mode. (This disable everything that keep the aircraft from exceeding safe aoa and stalling)
- AG2: Tail hook.
Supermaneuverability
AG1 is what you need to activate to do impressive maneuvers, when you press AG1 There are no visual indication that supermaneuvrability is on , the aircraft will gain more maneuverability and prone to stall which is not a big problem.
Also AG1 will disable the yaw correction so you'll sideslip a lot and there is nothing to stop it.
Credit to @WSI for free to use fuselage.
Specifications
General Characteristics
- Predecessor [Free to use] stealth fuselage
- Created On Windows
- Wingspan 51.6ft (15.7m)
- Length 72.4ft (22.1m)
- Height 11.3ft (3.5m)
- Empty Weight 15,346lbs (6,961kg)
- Loaded Weight 33,920lbs (15,385kg)
Performance
- Power/Weight Ratio 6.757
- Wing Loading 70.9lbs/ft2 (346.2kg/m2)
- Wing Area 478.3ft2 (44.4m2)
- Drag Points 3725
Parts
- Number of Parts 206
- Control Surfaces 0
- Performance Cost 1,208
@WSI
Thanks for the fuselage, it cut a lot of building time and it enable me to do flight model immediately.
@Khanhlam
lol
Fair point since this is my first true tailless aircraft.
But all the knowledge I've gain from this help me make this possible, the plane have split brake to control yaw when rudders fold down and not act as rudder anymore.
@GuyFolk
On normal flight, this isn't fly nice but rather unstable and feel glitchy:P
Maybe i've gone a bit improved but there are a bunch of things to learn more.
@Khanhlam
Guess you already improved.
My 'modern' builds are pretty much the same code but there are just more code in those build.
@GuyFolk
Simple ones, i think i can understand it.
It's not like a bunch of advanced funky with your modern aircraft, seems friendly to me:P
@Khanhlam
Anyways, this seems to be a perfect plane for FT starters lol.
This might be a little bit confusing since it has PID function.
@GuyFolk
"When I was 13, I was taught only basic logic like true&true=true"
Anyways, this seems to be a perfect plane for FT starters lol.
@TRD6932
Yeah.
Can I use the FBW here for my Grumman X-29?
@GuyFolk yea.. still great though 👍
@IceCraftGaming
That's what I can do back then to make unstable plane fly.
quite unstable but rly cool
@Echostar
I don't mind that.
@Grroro
Based on education in my area, yes it is tough.
When I was 13, I was taught only basic logic like true&true=true, true&false=false, and nothing else, they occupy my brain but no application or usage beside doing exam.
@GuyFolk well... yeah.. That said though... isnt algebra thought to 13 yo's?
/:-<
@Grroro
True.
But I think making artificial stability require knowledge of flight and algebra which are somewhat limiting by itself.
Many young people in SP may not have learned algebra enough to understand Funky tree anyway lol.
@GuyFolk ikr... some of these things such as instable stability doesnt even need maths or lots of research, its already done before.. your planes are a great example. All people need to do is stay more active and learn new things. There are so many people I've known who priorly thought artificial instability is not possible in simple planes. They never knew that all they had to do was incorporate and AoA limiter or G-Limiter into their designs. Its really easy to make a plane fly the way you want as long as you understand it well.
@Grroro
lol
Yeah.
Physic don't understand those people.
And there are still people who think simpleplanes' physics system can't allow this
Stop being stupid guys and get out there! Do some crazy shenanigans!
@BlinIndustry
Yaw tvc should work too but not as well as good old control surface.
Can i steal the code?
I want to know how to make these kind of plane fly.
Edit: NVM i can use the Yaw TVC code to do it.
@Rakoval500k
That's one way to do it.
What you've described is passive stability.
But this plane's purpose is to demonstrate the correction of yaw axis by using differential airbrake which is artificial stability, it'll lose control when the system is disabled.
Greetings! Good aircraft, but how about to make something that controls and maintains it's yaw stability by yaw-axis thrust vectoring only? Of course, i suggest to use some long structural wings to simulate the aerodynamic stabilizing effect of the fuselage and engine nacelles.
@IceCraft
No?
At least not immediately.
So... are you telling me that if I run out of fuel then I die?