akscott60 Posted May 9, 2015 Report Share Posted May 9, 2015 I wanted to stop hijacking the other thread. So, as you may know, they do things totally different than single rotor helicopters. If you have any questions, I will answer them as best as I can. 1 Quote Link to comment Share on other sites More sharing options...
Wally Posted May 10, 2015 Report Share Posted May 10, 2015 You said ETL 'feels' different? Quote Link to comment Share on other sites More sharing options...
akscott60 Posted May 10, 2015 Author Report Share Posted May 10, 2015 You don't feel it at all. No shudder, no pitch or roll. The aircraft just climbs more efficiently. Quote Link to comment Share on other sites More sharing options...
vortamock Posted May 10, 2015 Report Share Posted May 10, 2015 Are they just as easy to fly as a normal helicopter? ^^ That was a joke/genuine question regarding how they compare ^^ 1 Quote Link to comment Share on other sites More sharing options...
TachedOutOffRoad Posted May 11, 2015 Report Share Posted May 11, 2015 Any idea how many hours you get during F AQC? It's 11 weeks, but I can't find the hours anywhere. Quote Link to comment Share on other sites More sharing options...
akscott60 Posted May 12, 2015 Author Report Share Posted May 12, 2015 In the D model SOA course I flew 19.2 hours. That was Day only, contact and bcs. I will see if I can find the course syllabus for you. Quote Link to comment Share on other sites More sharing options...
TachedOutOffRoad Posted May 12, 2015 Report Share Posted May 12, 2015 Thanks. No hurry. The 60A/L AQC is only 6 weeks and I think they get about 20-30 hours. Same with the 72 course. I figure 60ish? for the 47f. Or is it mostly all new academics? "Supposed" to go next FY. Quote Link to comment Share on other sites More sharing options...
akscott60 Posted May 12, 2015 Author Report Share Posted May 12, 2015 You will spend a long, long time in the simulator learning CAAS. Like 50 hours. You will probably fly 25-30 hours in the aircraft. 1 Quote Link to comment Share on other sites More sharing options...
superstallion6113 Posted May 14, 2015 Report Share Posted May 14, 2015 (edited) I work as an A&P on the CH-46, and I've always wondered how the aerodynamics of the fwd rotor effect the aft rotor, and do the aft blades effect the fwd blades where they intermesh over the sync shaft tunnel? Does lift from the fwd rotor act as a relative wind for the aft rotor? If so can variations in the lift from the fwd rotor change the angle of that relative wind and subsequently effect the angle of attack and lift of the aft rotor blades? Or is that over thinking it? Tandem rotor aerodynamics sounds like an interesting ground school lesson. I'd also imagine that with a lack of tail rotor, that a hover could be done with less worry of wind direction? Of all things to ask, the aerodynamics of those things is what I'm curious of, probably because I don't know and that kind of technical stuff just interests me. Edited May 14, 2015 by superstallion6113 Quote Link to comment Share on other sites More sharing options...
akscott60 Posted May 15, 2015 Author Report Share Posted May 15, 2015 In the 47 the aft rotor always does more work. It also has to fly thru the air disturbed by the forward rotor. Since the aircraft uses differential collective pitch, the DAFCS computers make any adjustments they need to the controls to keep the aircraft happy. Wind direction at a hover matters almost nothing at all, but the aircraft will weathervane in large crosswinds (its 60 feet long). Tandem rotor aerodynamics are different. Recovering from VRS is different. Turning the DAFCS off induces flying the aircraft by hand, in all its glory. Power changes will disrupt the equilibrium greatly, so the key is to set the power and leave it. 1 Quote Link to comment Share on other sites More sharing options...
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