Max pwr take off
Thread Starter
Joined: Dec 2015
Posts: 4
Likes: 0
From: india
Max pwr take off
Why does the ASI flicker during max pwr t/o ?
One reason is the acceleration is a little faster the heptr will pass through the ground vortex around which causes instability of airflow.
Is there any other reason especially due to the construction os the ASI ?
One reason is the acceleration is a little faster the heptr will pass through the ground vortex around which causes instability of airflow.
Is there any other reason especially due to the construction os the ASI ?
Joined: Jul 2015
Posts: 42
Likes: 0
From: Canada
You basically explained it. Until the pitot is clear if the down wash, it's not getting clean air to be able to produce the needed ram-air effect of forward movement.
The down wash can also create a vacuum effect inside the pitot. It's not uncommon in certain helicopters with glass panel avionics to show a negative airspeed until you've past translation.
The down wash can also create a vacuum effect inside the pitot. It's not uncommon in certain helicopters with glass panel avionics to show a negative airspeed until you've past translation.
