Paul: Who wrote this? There was no name below it.
"A gyro, in a zero speed landing, lacks adequate rudder authority
because the prop is idling and there is no forward speed to produce
airflow over the rudder. It's is one of the great vulnerabilities of
gyros and the reason for a lot of rotor strikes due to a lack of yaw
control in the last moments of a zero speed landing.
The vectored thrust from a ducted fan might fill that control gap."
I doubt whomever wrote it is a gyrocopter (or the FAA term:
gyroplane) pilot.
A lot of rotor strikes and lack of yaw control are not issues in
pusher gyrocopters. Zero speed landings are possible with some
headwind. Very low speed touchdowns are common, with 10-20 feet rollouts.
Any rotor strikes of gyros one sees on youtube videos are almost
exclusively a takeoff situation, and a result of a pilot not following
their instructor's training to make sure the rotor blades are up to
flight speed before lifting off the ground.
There is no need to develop some sort of ducted fan for pusher gyros.
Kevin Richey
Portland, Oregon
Boyd Thompson wrote that.
Suppose you are landing in a cross wind. Is that possible?
Paul Lamar
Maybe a benefit !
https://www.youtube.com/watch?v=kcp-NvNjnr0&list=UUAWVs88I3PNCWc7rB3tCrOA
Steve Carlisle
The Rotary Engine free News Letter. Powered by Linux. If you want off
the list PLEASE let me know and I will remove you. ACRE NL web
site.
http://www.rotaryeng.net You Tube
http://tinyurl.com/beqqxas
Copyright 1998-2017 All world wide rights reserved.