What is the NAV1 and NAV2 speed?

Answer 1

NAV1 and NAV2 are typically radios that are used for tuning into radio navigational aids called VOR's. A NAV radio can determine what direction a VOR is in relation to the aircraft. In addition, a lot of these VOR's are equipped with a signal which allows an aircraft with DME to determine the aircrafts distance from the VOR. This can also calculate ground speed in reference to the VOR. I suppose this is what the NAV1 and NAV2 speed indicators are you're referring to.

Answer 2

NAV1 and NAV2 are navigation radios, they are both the same radios, just that one is for backup, there are some old planes the only have a nav radio and thats it. They are used tune in VOR (VHF Ominidirectional Range) frequencies, once its tuned in the VOR transmits a singal to the plane and then the VOR tells you where you are un relation to its position if you are flying towards it or away from it and on what radial you are on ( a radial is referd to as a line of magnetical bearing) you will see a to or from flag on your VOR indicator. Some VOR's are also VOR-DME and if you have a DME in your aircraft it will also determine the distance to the station.

You can also tune in localizer frequencies, and ILS frequencies.

Answer 3

NAV1 and NAV2 are radios, not speeds.
However, V1, V2, Vref, etc. are all speeds.
These speeds are different depending on the aircraft in question.

Answer 4

............ Nav stands for navigation .......... and nav 1 donates to instrument on captains side ............. and nav 2 donates to instrument on f/o side ......... they of course stand for VOR 1&2 with DME if available ........ they are also dupilicated on each others side ...... and have a different power supply ......... they have nothing to do with speed ........ but you can calculate ground speed by checking at what rate you are decreasing the miles to station or going further ......