It doesn't seem to me that the AOA/pitot would give a hoot wheather it was upside down or right side up. I would think that realitive flow calculations would work out the same. Now, the Dynon unit itself may be affected...I don't know. Just my $.02
dynonsupport ?
It doesn't seem to me that the AOA/pitot would give a hoot wheather it was upside down or right side up. I would think that realitive flow calculations would work out the same. Now, the Dynon unit itself may be affected...I don't know. Just my $.02
dynonsupport ?
Just wondering out loud here...
When people use the Dynon (for example...) pitot-based angle of attack sensing, what happens to it in inverted flight? Does it cease to function or return rubbish data?
Just curious...
A
Not like anyone is going to be making a turn from base to final while inverted. This is almost as bad as wondering if Bret Favre is going to retire or not. Who cares?
I'm wondering why anyone would be looking at an AOA while inverted.
The pressure type of AOA indicators would not be useful, because they are installed to read positive angles of attack, and inverted flight is a negative angle of attack.
You could mount a second unit on the top of the wing and calibrate it for inverted flight
A vane type of AOA could be designed to work for both upright and inverted flight. It would need to provide the range of motion for the vane for both upright and inverted flight and the display would have to be designed to display both positive and negative AOAs.
ASIs will work inverted, but may be inaccurate for two reasons. First the angle of the airflow at the pitot intake may cause inaccurate readings, especially at high negative angles of attack. Second the static source may provide inaccurate readings while inverted. You'd have to do some flight tests to develop an actual vs. indictated table for inverted flight.
...one of the ideas I'm playing with is how to navigate and glide from a random point in space down to a pre-defined landing strip. ...... Anyone know of such a project?
...one of the ideas I'm playing with is how to navigate and glide from a random point in space down to a pre-defined landing strip. Now, the next evolution of this idea is to develop it into a HITS-style guided emergency landing route at the punch of a button.
Space Shuttle?
Couldn't resist! But that is essentially what the guidance software does. Of coure, there are serious limitations as to what landing strips are reachable from any random point in space.
Paul
...As Paul intimated, realising that you're not able to make your chosen airport is perhaps more important..... How about using TAS & Rate of Descent to create a glide-range ring on a map display that takes into account current wind and terrain? That would be very useful!
I guess that would look something like this
Anything that has VNAV capability creates the profile to an airport, or a user specified height above the airport. I use it all the time on Garmin 430/530 - although I try very hard to not be gliding! Tie that in with the "nearest airport" function and its not many button pushes to achieve what you want.
Wouldn't this then display as a flight-path for HITS capable displays?
As Paul intimated, realising that you're not able to make your chosen airport is perhaps more important..... How about using TAS & Rate of Descent to create a glide-range ring on a map display that takes into account current wind and terrain? That would be very useful!