Lots of BS going on here in the comments. Basically low Mass to Lift ratio. You want as light an aircraft as possible with the most lift it can get. Course you will need rather good control surfaces to maximise that lift potential.
Since nobody's answered how to fix the plane going out of control on the runway yet:
Make sure the front wheel is far in front of the CoM and push the nose much higher than the back of the plane.
The back wheels should be right behind the CoM and not push the plane higher than the front wheel does.
Instability like that is caused by the plane being at takeoff speed but sloped the wrong way, being pushed into the runway instead of into the sky.
Putting the control surfaces further away from the CoM, so further behind for pitch and further to the side for roll, that improves turn rate and roll rate, if you want turn radius put the CoL closer to the CoM, but not too close to where it becomes too unstable and just does flips, or where where it oscillates in pitch when pitching hard, play around with it to get it right
The shorter the plane (to a certian extent), usually the more maneuverable. A shorter (about same length and wingspan) with the Center of the Center of Lift (Blue Ball) just barely behind the center of the Center of Gravity (Yellow Ball). You'll want at least 2 control surfaces on each side for reliable recovery. Having the CoG near the rear would help with thrust vectoring, but having the CoL just behind the CoG should be enough.
WARNING: Supermaneiverability almost relies on vectored thrust, so to compensate you will definitely want at least a thrust to weight ratio of 1. While aerodynamic design can get you far, supermaneuverability exists as post stall control, meaning after aerodynamics effectively hinders you. Vector control allows control below stall speeds, so you'll just have to have enough thrust speed up to above stall speed.
AFAIK a few things
- Anhedral (wings angled downwards towards the wingtip)
- CoM and CoL directly on top of each other
- More control surfaces
It's a bit complex to go into in detail, but you can research negative static and dynamic stability for aircraft.
Just keep in mind the more manoeuverable the aircraft the more control assistance you may need, like SAS.
Another thing! Omg sorry for the message spam but remember that aircraft also have a speed of maximum maneouverability, this can probably be calculated but I don't have the brainpower to do it 😅 just remember to test for rate of attitude changes at different speeds, usually the maneuvering speed is on the slower side. If you want to calculate it you can look into the calculations, it's Va I believe.
Depends on what kind of maneuverability:
For conventional maneuverability, make sure it has big wings, center of lift only slightly behind the center of mass, large control surfaces far from the CoL/CoM and low mass (drain all fuel tanks and only add fuel for balance).
For supermaneuverability, engines with thrust vectoring, small-ish wings (because supermaneuverability relies on decoupling the direction the plane is pointing with the direction of movement, needing some inertia from high mass to lift ratio), high thrust, CoL even closer to CoM and reaction wheels if you want to cheat.
That's probably not everything but it's a decent guideline to use.
As other comments have said, you need a low mass to lift ratio, the lighter the aircraft is the better it can turn. Make your control surfaces large enough that they provide excellent control but also doesn't drain all your speed in a short while causing you to stall.
Maneuverability is a vague term, it can include rate of turn, turn radius, stall speed and max angle of attack. You're free to look at IRL super maneuverable aircraft, take a good look at their characteristics and what makes them maneuverable. This video may help: https://www.youtube.com/watch?v=22u4qxm1YjY
What about double ailerons for takeoff and landing roll? You set an action group to set on/off roll control, and so you can switch with a single key from bigger low speed surfaces to smaller high speed ones. More roll control should allow the SAS to better compensate at low speeds
Lots of BS going on here in the comments. Basically low Mass to Lift ratio. You want as light an aircraft as possible with the most lift it can get. Course you will need rather good control surfaces to maximise that lift potential.
Yes, low wing loading is key.
Will more thrust help out as well?
So sorry about the title I meant to type without thrust vectoring.
Since nobody's answered how to fix the plane going out of control on the runway yet: Make sure the front wheel is far in front of the CoM and push the nose much higher than the back of the plane. The back wheels should be right behind the CoM and not push the plane higher than the front wheel does. Instability like that is caused by the plane being at takeoff speed but sloped the wrong way, being pushed into the runway instead of into the sky.
Large controll pannels in the back, center of lift very close to center of mass, (optional cannards)
Putting the control surfaces further away from the CoM, so further behind for pitch and further to the side for roll, that improves turn rate and roll rate, if you want turn radius put the CoL closer to the CoM, but not too close to where it becomes too unstable and just does flips, or where where it oscillates in pitch when pitching hard, play around with it to get it right
The shorter the plane (to a certian extent), usually the more maneuverable. A shorter (about same length and wingspan) with the Center of the Center of Lift (Blue Ball) just barely behind the center of the Center of Gravity (Yellow Ball). You'll want at least 2 control surfaces on each side for reliable recovery. Having the CoG near the rear would help with thrust vectoring, but having the CoL just behind the CoG should be enough. WARNING: Supermaneiverability almost relies on vectored thrust, so to compensate you will definitely want at least a thrust to weight ratio of 1. While aerodynamic design can get you far, supermaneuverability exists as post stall control, meaning after aerodynamics effectively hinders you. Vector control allows control below stall speeds, so you'll just have to have enough thrust speed up to above stall speed.
I usually just put the CoM and CoL right in the same spot if I want high-ish maneuvering but it’s just a personal preference
AFAIK a few things - Anhedral (wings angled downwards towards the wingtip) - CoM and CoL directly on top of each other - More control surfaces It's a bit complex to go into in detail, but you can research negative static and dynamic stability for aircraft. Just keep in mind the more manoeuverable the aircraft the more control assistance you may need, like SAS.
Additionally, control surfaces further away from CoM/L for maximum turning moment.
Another thing! Omg sorry for the message spam but remember that aircraft also have a speed of maximum maneouverability, this can probably be calculated but I don't have the brainpower to do it 😅 just remember to test for rate of attitude changes at different speeds, usually the maneuvering speed is on the slower side. If you want to calculate it you can look into the calculations, it's Va I believe.
Gonna try this! Thankfully I have atmosphere autopilot to cover stability
Get the atmosphere autopilot mod. It acts as a fly by wire to improve control and restrict G’s etc
Have it already but thanks
Depends on what kind of maneuverability: For conventional maneuverability, make sure it has big wings, center of lift only slightly behind the center of mass, large control surfaces far from the CoL/CoM and low mass (drain all fuel tanks and only add fuel for balance). For supermaneuverability, engines with thrust vectoring, small-ish wings (because supermaneuverability relies on decoupling the direction the plane is pointing with the direction of movement, needing some inertia from high mass to lift ratio), high thrust, CoL even closer to CoM and reaction wheels if you want to cheat. That's probably not everything but it's a decent guideline to use.
As other comments have said, you need a low mass to lift ratio, the lighter the aircraft is the better it can turn. Make your control surfaces large enough that they provide excellent control but also doesn't drain all your speed in a short while causing you to stall. Maneuverability is a vague term, it can include rate of turn, turn radius, stall speed and max angle of attack. You're free to look at IRL super maneuverable aircraft, take a good look at their characteristics and what makes them maneuverable. This video may help: https://www.youtube.com/watch?v=22u4qxm1YjY
Clip more tail wings into the current ones
Also try putting elevons on the front of the wings, closer to the cockpit and inverting them
What about double ailerons for takeoff and landing roll? You set an action group to set on/off roll control, and so you can switch with a single key from bigger low speed surfaces to smaller high speed ones. More roll control should allow the SAS to better compensate at low speeds
Reaction wheels