Hello, fish.
The problem is not center of pressure, but your attempts to move it.
I will give you fixed version and explaination what's wrong soon,
for now i can say that it can't stall, goes into tailspin, and can't stop rolling because canards have almost 50x more area than main wing.
First line says, that it's "Challenge For Skilled Ship Builders Of SP Community",
lines 10-12 says that part of rewards is spotlights,
but you have only 81 point for now, (most active community have more points than you for now)
and iirc you can spotlight builds only from player that have less points than you.
Was it a joke,
Or do you have another account?
It feels like some humans upvoted it not because of technology, but because of anime girl picture...
It once again proves that the only purpose of a living organism is to replicate it's genes...
@Formula350 Actually, you can get craft with mass below zero, because you can ge fuel tank with negative amount of fuel.
I don't know about negative mass, but with near-zero mass it just crashes game.
Tank destroyers
Must not exceed 50 km/h
Max. Hull turn rate 180 deg/s
Is that a joke?
Even WWII-era M18 GMC have maximum speed of 89 km/h.
And in modern war, 50 km/h is too slow to hunt tanks.
Tank destroyer must have speed of at least 90-110 km/h, because
MBT's
Must not exceed 70 km/h
Or do i need to make WWI foil box?
I think max speed for heavy tanks is too low too, because, for example, King Tiger have maximum speed of 42 km/h. Yes, only on road good enough, but still.
One more time, please
2 seconds for 60 mph is 13.4 m/s/s, or 0.36G. Is that for TWR, or for any acceleration including lift and drag?
"counts for any type of cannon and gun" means we can't build custom AI (and need to optimize plane for vanilla one)?
What is maximum acceleration?
Is there any rules about impactForce ?
No auto-aiming
Does it counts about anything or just about turrets?
What is the limits at which build will not be considered as "jet fighter"?
How many thrusters can i use?
Can i use electric propulsion?
No auto-firing
Does it counts about any weapon or just about turrets?
Must it be manned?
What do you mean by "realistic looking"? (will celera l500 with jets under wing root look realistic?)
Can i participate without team? (i'm both engineer and pilot)
Is tiltwing allowed?
Is movable wing allowed?
How many thrusters can i use?
@ShinyGemsBro
I knew that humans can be stupid, but comments under this post is breaking records.
It's, like, basic statements that kids know from at least 5 year of life Variable>=Constant Variable is any input, constant is any number.
In your case you will need VerticalG, because you need vapor on horizontal surface.
About speed, i don't think you can calculate temperature and pressure of vapor at specific conditions, so IAS will be okay.
To join two comparsions you can use boolean mult (a&b) (boolean and real mult isn't same thing)
Wings have a bug:
With some combination of scale and shape they will glitch and flap like bird's wing,
usually in air airplane with such technology flies at speed about 6000 km/h,
but water have 1000x density,
so it's possible to fly without glitches in air and quickly accelerate in water.
Also wings with negative area will have negative drag, but it will crash your game in some parts of second.
Duct fan mainly use for increasing the efficiently of propeller.
. I know, but in SP it works just like any other fuselage(block,rotator,gyro,or anything with drag).
Propeller is work by "moving a large volume of air at low velocity"
. Understandable. Understandable, it's not true in SP, because there's no airstreams(1) in SP.
Propeller suffer increase drag an it spin faster regardless.
. Blade It have mesh of each blade only if angular speed is small enough, if it spins it have mesh of Block-2, and it's drag is constant.
. Heliblades No, i just tested it annd it's drag is constant.
. Jet It's just a block with constant force aplied to it, so it's drag is constant.
. So, it's not true in SP.
Why don't we have multi rotor combat aircraft irl
. Because IRL we have other laws of motion and can't edit it.
why don't we have supersonic jet camera drone.
. If "drone" is something man-portable: It's not supersonic, but 740 kph is good too, and nothing stops you from building a supersonic fpv drone if you need it.
. If "drone" is any unmanned flying vehicle: Lockheed D-21,Tu-123 and a lot of projects.
.
(1) Any detail mounted directly behind any detail just don't cares about it.
@trios21 You probably forgot about wings.
SP can't really calculate real-time aerodynamics, so it calculates very long expression, i proved that for std wing it uses aspect ratio and airfoil.
I'm still not sure about reynolds number, because most of numbers is pre-calculated in designer, so probably it uses chord instead.
Calculated number is multiplied in-flight by second power of IAS, cosine of Angle of Slip, Angle of attack multiplied by sort of polynom given by airfoil, and wing area.
So, to increase glide ratio(and thus decrease drag) you need
minimal wing chord,
maximal aspect ratio, (at some point it will start to flap it's wings)
Symmetric airfoil,
minimal angle of slip,
angle of attack between 0 and 3 deegres.
UPD: all above is a lie, perhaps my instruments wasn't very accurate back then.
AoA is what matters. Highest glide ratio you can get is ~97 for ~8deg AoA with symmetric wing.
conventional aircraft have less drag ..., the main source of drag ... the rotor itself
You can use ducted fan.
as it spin faster the more drag it have to overcome
Yes, When rotor spins fast enough, speed of wingtip at one side of the rotor is double the speed of craft,
but speed at other side of rotor is near-zero, so overall drag is same at any speed.
not to mention the tip of the rotor going super sonic which is a whole new set of problems.
IRL some propellers can have speed of tip more than speed of sound, so, it's just possible.
IIRC, SP don't have any difference between M0.5 and M2, you can even build hypersonic airplane with straight flat-bottom wings.
About the engine, airplane engine is big, fighter is just an engine with just enough wing to make it fly
If it have wings literally just to make it fly, it's a modern missile, not airplane. Airplane need really big wings, because it need lift 2-3 (for cargo aircrafts) or even 6-12 times more than it's mass, else it will not be able to turn fast enough without loss in altitude.
so adding more engines means adding more accommodating component and if those added engines was not in use
If you can turn engine, you can use it in any case.
it'll be just deadweight.
Like landing gears or human?
Well, maybe.
The point is there is a lot to balance
Creators of Twin mustang, Lightning, A6M will laugh.
and the best fighter aircraft isn't the one that have the best performance but the one that have the best balance.
Well, if you can't make use of non-typical aircraft perfomance, or you need universal aircraft to fly in forest and intercept missiles.
Else, attempt to balance a craft is nothing.
Yes, it will not able to fly as long as a plane, but in dogfight with AG1+AG2 this plane in most cases uses wings just as airbrakes, so it can be swapped with airbrakes, and heli rotors itself can be used as pretty good wings.
.
and drag
No, it even may have less drag than generic airplane because it doesn't need wings, control surfaces, et c., and can be shaped like a droplet.
.
and weight
2*2 additional small heli rotors will weight like 900kg with default settings, or even less if you will use jet-1, i don't think it's too much.
.
If i understood correctly, this airplane have only four deegres of freedom: vec3 Pitch,Roll,Yaw for rotation&COT position control,
and Throttle for acceleration parallel to heading,
anything else is linked to difference of rotation and velocity vectors,
and you can not control it without change in airplane orientation.
.
If you have >3 omnidirectional, or >12 one-directional thrusters, you can have six deegres of freedom: vec3 Roll,Pitch,Yaw for rotation(COT position remains constant and equal to COM position),
and vec3 for acceleration,
both rotation and acceleration can not act on each other.
.
All said will work just-as-planned only in SP physics, because IRL rotors need space in front of it and behind it, and will act on air moving around craft.
.
If you need proof of concept, you can see spefyjerbf's builds, or read this paper.
https://www.simpleplanes.com/a/A0yM5n/F-15-J-Kai
Hello, fish.
The problem is not center of pressure, but your attempts to move it.
I will give you fixed version and explaination what's wrong soon,
for now i can say that it can't stall, goes into tailspin, and can't stop rolling because canards have almost 50x more area than main wing.
Is there any eggy helicopter for scale?
I tried to fit Gator-2 into eggship hangar, but it's rotor diameter is 1.5x more than ship's width.
@BeastHunter
https://en.wikipedia.org/wiki/SovietsubmarineK-314
https://en.wikipedia.org/wiki/USSKittyHawk(CV-63)#1979to_1998
First line says, that it's "Challenge For Skilled Ship Builders Of SP Community",
lines 10-12 says that part of rewards is spotlights,
but you have only 81 point for now, (most active community have more points than you for now)
and iirc you can spotlight builds only from player that have less points than you.
Was it a joke,
Or do you have another account?
Will flying tank be judged as tank or as airplane?
@X4JB Brain is stupid and doesn't knows that.
It feels like some humans upvoted it not because of technology, but because of anime girl picture...
It once again proves that the only purpose of a living organism is to replicate it's genes...
@TheRealKronos so, he sure that all teams will post planes 3 weeks after deadline?
@DJ2keroni Just for info, what is your mean time to answer in your comments section?
@Formula350 Actually, you can get craft with mass below zero, because you can ge fuel tank with negative amount of fuel.
I don't know about negative mass, but with near-zero mass it just crashes game.
When is the deadline?
Is that a joke?
Even WWII-era M18 GMC have maximum speed of 89 km/h.
And in modern war, 50 km/h is too slow to hunt tanks.
Tank destroyer must have speed of at least 90-110 km/h, because
Or do i need to make WWI foil box?
I think max speed for heavy tanks is too low too, because, for example, King Tiger have maximum speed of 42 km/h. Yes, only on road good enough, but still.
@DJ2keroni
Yes, at start it just climbs up and tries to evade target's fire.
You need wings or engines to fly.
There's no wings,
And there's only one jet that faces forward (and can't lift plane because it faces forward).
cos(Time*45)/90sin(Time*45)/90+cos(Time*45)/90Good art,
But canonical Hatsune Miku have cyan hairs.
@DJ2keroni No, it's finished, it just looks like that. Appearance of craft is not my strong suit.
Still, tag me when this buggy will be ready, please.
@Victor4LoneSoldier Minimum lock time is 1 second. Same for reload of missile.
@asteroidbook345 But i think it will work.
but
@Rodrigo110 in one of his discord messages:
60 mph for 2 seconds is ~1.37G.
Did you mean nose or velocity vector?
@Rodrigo110 https://en.wikipedia.org/wiki/Thrust-to-weight_ratio
@Rodrigo110 TVC and no maximum quantity limits for engines gives near-zero turn time,
but DJ2Keroni said that mximum TWR is like 1.37
@Bluebonbane Fastest builder in wild west! i just built frame and control system...
Looks cool, but it's like built from 3.5 different airplanes..
@DJ2keroni No, we aren't.
One more time, please
2 seconds for 60 mph is 13.4 m/s/s, or 0.36G. Is that for TWR, or for any acceleration including lift and drag?
"counts for any type of cannon and gun" means we can't build custom AI (and need to optimize plane for vanilla one)?
Team: F4
Pilot, engineer, and anything: Me.
What is maximum acceleration?
Is there any rules about impactForce ?
Does it counts about anything or just about turrets?
What is the limits at which build will not be considered as "jet fighter"?
How many thrusters can i use?
Can i use electric propulsion?
Does it counts about any weapon or just about turrets?
@hRmm
Custom tracks, cannonshells.
T.
Must it be manned?
What do you mean by "realistic looking"? (will celera l500 with jets under wing root look realistic?)
Can i participate without team? (i'm both engineer and pilot)
Is tiltwing allowed?
Is movable wing allowed?
How many thrusters can i use?
@ShinyGemsBro
I knew that humans can be stupid, but comments under this post is breaking records.
It's, like, basic statements that kids know from at least 5 year of life
Variable>=ConstantVariable is any input, constant is any number.In your case you will need VerticalG, because you need vapor on horizontal surface.
About speed, i don't think you can calculate temperature and pressure of vapor at specific conditions, so IAS will be okay.
To join two comparsions you can use boolean mult (a&b) (boolean and real mult isn't same thing)
And this build doesn't have anything of it.
Just very good picture around std tracks.
@Weeeeeeee2 When replying tag user, please.
If you don't tag user, he would not know about your reply.
It looks like both propellers is rotating to same side. Try to reverse rotation of one propeller.
You can add to auto-aim code
atan(X/TargetDistance)*180/pi, where X is distance from center line to gun, maybe it will work.Cockpit looks cool, but it's not really possible to guess how far the sea is just because of altitude indicator.
Wings have a bug:
With some combination of scale and shape they will glitch and flap like bird's wing,
usually in air airplane with such technology flies at speed about 6000 km/h,
but water have 1000x density,
so it's possible to fly without glitches in air and quickly accelerate in water.
Also wings with negative area will have negative drag, but it will crash your game in some parts of second.
You can use wings with high aspect ratio to do the same thing.
Sometimes it even works without water.
with a good picture you can sell anything.
Duct fan mainly use for increasing the efficiently of propeller.
. I know, but in SP it works just like any other fuselage(block,rotator,gyro,or anything with drag).
Propeller is work by "moving a large volume of air at low velocity"
. Understandable. Understandable, it's not true in SP, because there's no airstreams(1) in SP.
Propeller suffer increase drag an it spin faster regardless.
. Blade It have mesh of each blade only if angular speed is small enough, if it spins it have mesh of Block-2, and it's drag is constant.
. Heliblades No, i just tested it annd it's drag is constant.
. Jet It's just a block with constant force aplied to it, so it's drag is constant.
. So, it's not true in SP.
Why don't we have multi rotor combat aircraft irl
. Because IRL we have other laws of motion and can't edit it.
why don't we have supersonic jet camera drone.
. If "drone" is something man-portable: It's not supersonic, but 740 kph is good too, and nothing stops you from building a supersonic fpv drone if you need it.
. If "drone" is any unmanned flying vehicle: Lockheed D-21,Tu-123 and a lot of projects.
.
(1) Any detail mounted directly behind any detail just don't cares about it.
@trios21 You probably forgot about wings.
SP can't really calculate real-time aerodynamics, so it calculates very long expression, i proved that for std wing it uses aspect ratio and airfoil.
I'm still not sure about reynolds number, because most of numbers is pre-calculated in designer, so probably it uses chord instead.
Calculated number is multiplied in-flight by second power of IAS, cosine of Angle of Slip, Angle of attack multiplied by sort of polynom given by airfoil, and wing area.
So, to increase glide ratio(and thus decrease drag) you need
minimal wing chord,
maximal aspect ratio, (at some point it will start to flap it's wings)
Symmetric airfoil,
minimal angle of slip,
angle of attack between 0 and 3 deegres.
UPD: all above is a lie, perhaps my instruments wasn't very accurate back then.
AoA is what matters. Highest glide ratio you can get is ~97 for ~8deg AoA with symmetric wing.
You can use ducted fan.
Yes, When rotor spins fast enough, speed of wingtip at one side of the rotor is double the speed of craft,
but speed at other side of rotor is near-zero, so overall drag is same at any speed.
IRL some propellers can have speed of tip more than speed of sound, so, it's just possible.
IIRC, SP don't have any difference between M0.5 and M2, you can even build hypersonic airplane with straight flat-bottom wings.
If it have wings literally just to make it fly, it's a modern missile, not airplane. Airplane need really big wings, because it need lift 2-3 (for cargo aircrafts) or even 6-12 times more than it's mass, else it will not be able to turn fast enough without loss in altitude.
If you can turn engine, you can use it in any case.
Like landing gears or human?
Well, maybe.
Creators of Twin mustang, Lightning, A6M will laugh.
Well, if you can't make use of non-typical aircraft perfomance, or you need universal aircraft to fly in forest and intercept missiles.
Else, attempt to balance a craft is nothing.
@Dracul0Anderson
Explosive one in nose is Cannon-1 added in 1.9, and four in wings is just Gun-1|Gun-2 parts.
Yes, it will not able to fly as long as a plane, but in dogfight with AG1+AG2 this plane in most cases uses wings just as airbrakes, so it can be swapped with airbrakes, and heli rotors itself can be used as pretty good wings.
.
No, it even may have less drag than generic airplane because it doesn't need wings, control surfaces, et c., and can be shaped like a droplet.
.
2*2 additional small heli rotors will weight like 900kg with default settings, or even less if you will use jet-1, i don't think it's too much.
.
If i understood correctly, this airplane have only four deegres of freedom:
vec3 Pitch,Roll,Yaw for rotation&COT position control,.and Throttle for acceleration parallel to heading,
anything else is linked to difference of rotation and velocity vectors,
and you can not control it without change in airplane orientation
.
If you have >3 omnidirectional, or >12 one-directional thrusters, you can have six deegres of freedom:
vec3 Roll,Pitch,Yaw for rotation(COT position remains constant and equal to COM position),.and vec3 for acceleration,
both rotation and acceleration can not act on each other
.
All said will work just-as-planned only in SP physics, because IRL rotors need space in front of it and behind it, and will act on air moving around craft.
.
If you need proof of concept, you can see spefyjerbf's builds, or read this paper.
You can use smooth function to store numbers and make sort of self-teaching system.
And i still think that spaceship|multirotor will be better beacuse it isn't limited by wings and one-directional thruster.
Actually, this is what IRL named Control Moment Gyro and used in old orbital stations, toys , et c..
You can make it a lot better, if you use four blocks instead of one disk.