You can make the nose wheel steerable by editing the 7th number in the nose wheel line of the contact points in the aircraft.cfg file. For example:
//0 Class
//1 Longitudinal Position (feet)
//2 Lateral Position (feet)
//3 Vertical Position (feet)
//4 Impact Damage Threshold (Feet Per Minute)
//5 Brake Map (0=None, 1=Left, 2=Right)
//6 Wheel Radius (feet)
//7 Steer Angle (degrees) - - - - - - - - - - - - - - - - - this number
//8 Static Compression (feet) (0 if rigid)
//9 Max/Static Compression Ratio
//10 Damping Ratio (0=Undamped, 1=Critically Damped)
//11 Extension Time (seconds)
//12 Retraction Time (seconds)
//13 Sound Type
[contact_points]
point.0=1, 5.00, 0.00, -4.82, 9000.0, 0,0.6, --- 47.0 ---, 0.24, 2.5, 0.8, 0.0, 0.0, 0.0, 0.0,0.0 (without those dashes)
The 0 after "point" is just the number of that point in sequence, not an actual contact point. It's pretty much always the nose gear point, and the zero on the third position after that, lateral position 0, shows it to be on the center line, like a nose wheel or tail wheel. The 47 in the seventh position indicates that the wheel can turn up to 47 degrees. A non-steerable nose wheel would have a zero there.
