Operation of Robinson Helicopters continued
Asked by: David A Hatcher 3684 views Flight Instructor, Helicopter
Continued:
Thanks Kris for your info!
My thought (or “idea”) is that pilots are leaning the mixture to save gas, fly along into different conditions, forget to enrich and it gets quiet. Obviously without enough time/ altitude/ hands to get it restarted. I am astounded by the number of investigations that put the engine on a test stand (some even left in the wreck!) that are started and run to standards. I am a staunch defender of the pilot but I have to start wondering what the common denominator is. Why do R22/44 engines quit for no apparent reason?
(47Gs/269/300/F28s and B2Bs do too!)
As for my question on the appropriate hover height, if you’re hovering at an “appropriate hover height you won’t hit the ground. You don’t hit the ground, you can’t get dynamic rollover. Second most popular “probable cause” is “Failure to maintain rotor RPM”. Maintaining engine and rotor RPM is essential hence my question about the governor.
Why aren’t pilots maintaining a hover height to prevent hitting the ground/obstacles thus causing dynamic rollover?
Doing touchdown autos (or any run-on landing) in the grass/dirt reduces wear on the skids (which I am sure is the primary reason) but it exposes the landing to hitting a “clump of dirt”, unseen ruts, gopher holes and whatever else that’s gonna’ flip it over.
So for the “run on” landings, how “fast” and “far” is considered acceptable?
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