Notar520AC From United States of America, joined Jul 2001, 1606 posts, RR: 3
Reply 1, posted (13 years 11 months 23 hours ago) and read 2026 times:
I have never used the thing in any helicopter, but I from playing with it in the sim it looks like it just inches the main rotor RPM up and down in small incraments. Gee- you guys have a lot of questions I'm gonna have to ask my instructor!
FredT From United Kingdom, joined Feb 2002, 2185 posts, RR: 25
Reply 5, posted (13 years 10 months 4 weeks 1 day 17 hours ago) and read 2013 times:
Time to hit some jet engine literature then!
In a single spool turboshaft engine, the compressor, driveshaft and turbine are all on one axle. In a dual spool, the low pressure compressor, low pressure turbine and driveshaft share one axle while the high pressure turbine and high pressure compressor are on a second one.
I thought I was doing good trying to avoid those airport hotels... and look at me now.
Ups763 From United States of America, joined Nov 2001, 199 posts, RR: 0
Reply 8, posted (13 years 10 months 3 weeks 2 days 4 hours ago) and read 2006 times:
In the R22 there are two needles, Engine and Rotor tach. In normal flight they should be joined at all times and operate at 97-104%. When practicing autos, throttle chops, etc., the trottle is complettley rollled of until you flare. So the needles are not joined during those procedures. When the engine and rotor are not joined the rotor speed has a range of 90%-110%. Anything below 80% your blades stall and thats all she wrote.