Gender
Male
About
Location
Fort Worth, TX
About Me:
9 years as Rotorcraft Engineer. Currently working for robotics company
Please tell us a bit about your UAV interest
disobedienttiger.blogspot.com
Activity Feed
"the blade tips of all helicopters, the props of all planes, and the blades of all turbine engines are hitting about 0.7 mach.
helis with large rotors have a lower disk loading. this is less about efficiency (again, every blade tip is about 0.7…"
helis with large rotors have a lower disk loading. this is less about efficiency (again, every blade tip is about 0.7…"
"i THINK the bigger EDF would be more efficient.
the studies if have read are all nondimensional, ie scaling does have an effect.
but that doesn't FEEL right.
the problem with 1 big one is the weight of the duct becomes ciritcal"
the studies if have read are all nondimensional, ie scaling does have an effect.
but that doesn't FEEL right.
the problem with 1 big one is the weight of the duct becomes ciritcal"
"I disagree with part of bGatti's statement.(
A properly designed ducted fan adds up to 60% lift.
that may not be offset by the added weight of the duct
(Singh, Shape Optimization of a Ducted Rotor System for Aerodynamic Performance, 2011)…"
A properly designed ducted fan adds up to 60% lift.
that may not be offset by the added weight of the duct
(Singh, Shape Optimization of a Ducted Rotor System for Aerodynamic Performance, 2011)…"
"thanks for the invite. i will try to poke my head in if i can."
