Hi
Dynon
A nice optional gauge to display on the EMS would be acceleration, based on gps ground speed and indicated airspeed. The units could be metric or imperial.
The usefulness of this gauge would be during the takeoff roll. Each type of aircraft will have typical accelerations required to get the aircraft off the ground in the typical takeoff roll distance at the typical rotate air speed.
By glancing at the acceleration, the pilot has immediate feedback on the takeoff roll required and will allow for runway surface, slope, aircraft elevation, pressure altitude, engine tune, headwind etc.
If during the roll the acceleration is too low, the pilot is immediately aware that the situation is not typical and maybe an abort is required.
An enhancement would be to add typical takeoff roll distance and typical rotate air speed to setup. Now the gauge could calculate during the roll if the typical rotate speed is going to be reached before the end of the typical takeoff roll. If not the gauge may change to to RED, with an option audio warning, "Takeoff roll slow"
For example, with a typical takeoff roll of 200m on a runway length of 500m a red indication on the gauge is of more importance than say on a 1000m runway. Note that the indication will automatically allow for all the variables which can effect takeoff acceleration because the actual airspeed is being used compared with ground speed to see how much of the takeoff roll is being taken.
Doug
Dynon
A nice optional gauge to display on the EMS would be acceleration, based on gps ground speed and indicated airspeed. The units could be metric or imperial.
The usefulness of this gauge would be during the takeoff roll. Each type of aircraft will have typical accelerations required to get the aircraft off the ground in the typical takeoff roll distance at the typical rotate air speed.
By glancing at the acceleration, the pilot has immediate feedback on the takeoff roll required and will allow for runway surface, slope, aircraft elevation, pressure altitude, engine tune, headwind etc.
If during the roll the acceleration is too low, the pilot is immediately aware that the situation is not typical and maybe an abort is required.
An enhancement would be to add typical takeoff roll distance and typical rotate air speed to setup. Now the gauge could calculate during the roll if the typical rotate speed is going to be reached before the end of the typical takeoff roll. If not the gauge may change to to RED, with an option audio warning, "Takeoff roll slow"
For example, with a typical takeoff roll of 200m on a runway length of 500m a red indication on the gauge is of more importance than say on a 1000m runway. Note that the indication will automatically allow for all the variables which can effect takeoff acceleration because the actual airspeed is being used compared with ground speed to see how much of the takeoff roll is being taken.
Doug