Vertical Speed / Altitude Tape Indications on Modern PFDs - Howdoesitwork?
Dear friends,
On some old COLLINS / HONEYWELL CRTs & most all new LCD Primary FLight Displays, the Vertical Speed display is represented as either a radial arc in the lower right hand corner OR a radial arc juxtaposed to the altitude tape ( IE located in close proximity & next to the altitude tape where the VS arc pointer points in the direction of the altitude tape ). Concerning the latter - I was told that the VS arc pointer will actually point to a target altitude - IE simultaneously give you ( IE point to ) VS & where your target altitude will be ( IE if you carry the VS pointer another 1/4 inch into the altitude tape window - it is pointing to an actual predicted altitude target )
Is this correct ? - Ive never seen this as a training point other than at Boeing. Anyone know for sure how this actually works ?
Any thoughts would be appreciated - Thanks !
This got appended by mistake to a previous message - sorry