Two possibly dumb questions...

There are no such things as DME radials. Radials are the radio signals that eminate from VOR's and define a specific bearing for that particular VOR. There are 360 radials from each VOR, one for each degree of magnetic bearing from that radial. For example, the 270 radial of a VOR is the line heading due west from that VOR.

Some but not all VOR's also have DME (distance measuring equipment). That device, along with associated equipment in the aircraft, will tell you how far you are from the VOR/DME that is being recieved. If you are on the 270 radial of the VOR and the DME receiver set to that VOR/DME registers 13.4, it means you are exactly 13.4 miles west of that VOR.

As you have discovered, both radials and DME fixes are used in many IFR enroute, terminal, and approach procedures to define paths to fly or points along the procedure. Radials and DME fixes are also commonly used in VFR navigation.

Yaw is the unstable movement of an aircraft from side to side. Sometimes yaw is induced by the pilot, either on purpose or accidentally through overcontrol. Some aircraft are engineered with a tendancy toward yaw to allow them to be more manueverable. A yaw damper is a device on the aircraft that provides automatic opposite control to prevent or minimize yaw.

Woo, thank you, now I finally understand the SID's, now to just figure out the wonderful STAR's. 🙂

Btw is the yaw damper even simulated in FS if anyone knows?

Btw great thing about Radar Contact 4 is if there are published depature procedures are told to follow them and climb to certain altitude.