N941WR
Legacy Member
A recent thread regarding verifying Vx, Vy, and Vbg had me thinking, can we use the technology in our EFIS's to help calculate these numbers?
For example Vbg should be easy to figure out. Get to altitude, dial in a lower altitude and observe where the "banana" is. The "Banana" is a mark that indicates where on the chart the airplane will be when it arrives at the programmed altitude.
The pilot then starts downhill and watch the "banana". If it moves further out, your glide range is improving, if it moves in, your glide range is decreasing. Whatever speed provides the furthest range is your Vbg.
Vy is similarly easy to discover using the autopilot by programming in different climb speeds and letting it fly the plane while you observe the vertical speed after each airspeed setting stabilizes. (I would suggest starting about 20 mph/kts below a "known" Vy and working 20 mph/kts past that number.)
How can you use the technology to figure out Vx and are there easy ways to find all three than what I have described?
For example Vbg should be easy to figure out. Get to altitude, dial in a lower altitude and observe where the "banana" is. The "Banana" is a mark that indicates where on the chart the airplane will be when it arrives at the programmed altitude.
The pilot then starts downhill and watch the "banana". If it moves further out, your glide range is improving, if it moves in, your glide range is decreasing. Whatever speed provides the furthest range is your Vbg.
Vy is similarly easy to discover using the autopilot by programming in different climb speeds and letting it fly the plane while you observe the vertical speed after each airspeed setting stabilizes. (I would suggest starting about 20 mph/kts below a "known" Vy and working 20 mph/kts past that number.)
How can you use the technology to figure out Vx and are there easy ways to find all three than what I have described?