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        Discussion left slow circle turn in slowstick with FMS

#1 Nethole Sep 10, 2004 09:59 PM

left slow circle turn in slowstick with FMS
 
Ddts

#2 ggunners Sep 11, 2004 08:55 AM

Quote:

Originally Posted by Nethole
Yet, when I run the model, I get a slow left hand turn no matter what I do. elevator seems to work as expected. Any suggestions?

Motor torque, see the answer to your other post. Reverse the motor direction and it'll turn the opposite way.

-- ggunners

#3 Nethole Sep 11, 2004 08:21 PM

how to add a second motor
 
Ddts

#4 ggunners Sep 11, 2004 08:34 PM

Here's 2 electric motors:

MOTOR //Motor(en) (motor, engine)

-0.4415 0 0 //Position [m] (position)
1 0 0 //Zugrichtung (direction of thrust)
0.1651 //Propellerdurchmesser [m] (prop diameter)
0.1397 //Pitch, Steigung des Propellers [m] (pitch, upward gradient of prop)
2 //Anzahl Propellerblätter (number of prop blades)
0.009 //mittlere Propellerblatttiefe [m] (mean chord length of prop blades)
RIGHT //rechtsdrehender Propeller (clockwise rotating prop)
0.0002 //Rotationsträgheitsmoment von Propeller und Motor [kg*m^2] (rotation moment of inertia)
4 //Kanal (channel 4)
ELECTRO //Motortyp = Verbrennungsmotor (motor type = COMBUSTION/ELECTRO)
12 //Nennspannung des Motors [V] (motor voltage)
15000 //Leerlaufdrehzahl [U (idling speed)
10 //Leerlaufstrom [A] (idling current)
70 //Blockierstrom [A] (blocking current)
1 //Übersetzung des Getriebes (typischerweise > 1) [-] (translation of transmission, typical > 1)
1 //Getriebewirkungsgrad [-] (transmission efficiency)
12 //Anzahl Zellen des Akkus (jeder Motor hat seinen eigenen Akku) [-] (number of batt cells)
2100 //Kapazität des Akkus (0=Akku nie leer) [mAh] (capacity of batts, 0 = never empty)
3 //Innenwiderstand des Akkus [mOhm] (internal battery resistance)

MOTOR //Motor(en) (motor, engine)

-0.4415 0 0 //Position [m] (position)
1 0 0 //Zugrichtung (direction of thrust)
0.1651 //Propellerdurchmesser [m] (prop diameter)
0.1397 //Pitch, Steigung des Propellers [m] (pitch, upward gradient of prop)
2 //Anzahl Propellerblätter (number of prop blades)
0.009 //mittlere Propellerblatttiefe [m] (mean chord length of prop blades)
LEFT //rechtsdrehender Propeller (clockwise rotating prop)
0.0002 //Rotationsträgheitsmoment von Propeller und Motor [kg*m^2] (rotation moment of inertia)
4 //Kanal (channel 4)
ELECTRO //Motortyp = Verbrennungsmotor (motor type = COMBUSTION/ELECTRO)
12 //Nennspannung des Motors [V] (motor voltage)
15000 //Leerlaufdrehzahl [U (idling speed)
10 //Leerlaufstrom [A] (idling current)
70 //Blockierstrom [A] (blocking current)
1 //Übersetzung des Getriebes (typischerweise > 1) [-] (translation of transmission, typical > 1)
1 //Getriebewirkungsgrad [-] (transmission efficiency)
12 //Anzahl Zellen des Akkus (jeder Motor hat seinen eigenen Akku) [-] (number of batt cells)
2100 //Kapazität des Akkus (0=Akku nie leer) [mAh] (capacity of batts, 0 = never empty)
3 //Innenwiderstand des Akkus [mOhm] (internal battery resistance)

#5 Nethole Sep 12, 2004 08:58 AM

trouble getting both engines
 
Ddts

#6 ggunners Sep 12, 2004 06:42 PM

Yes there are other things in the file that could cause a left turn to happen all the time.

One wing shorter than the other.
One wing positioned not directly opposite the other.
One wing with a higher angle-of-attack.

Wind pushing the model off track. Is wind zero?

Which model are we talking about?

Can you share the .par file?

-- ggunners

#7 Nethole Sep 12, 2004 10:16 PM

found problem
 
Ddts


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