Originally Posted by
Outwest
Post #336 is very interesting. I'm trying to understand what power setting, what pitch and roll attitude would have you maintaining a fairly constant AS, a slight climb but have a huge ROD that starts around 45:11 and last until about 45:21 where the AS does start to increase.
1) with the caveat that FR24 ADS-B tracking is as trustworthy as a rattlesnake, especially regarding rates.....
2) From 45:08 to 45:18, there is
not a "a huge ROD." There is a
reduction in rate of climb, from 1800 fpm to zero (read from the scale on the left). Which is consistent with the aircraft leveling off at ~2100 MSL, as the altitude track indicates.
3) this
is a rotorcraft, and within limits, it is easy to hold a constant airspeed (even zero) while creating a high ROD/ROC. It is called "raising or lowering the collective" (angle of attack of all the rotor blades). Lower the collective a bit (with perhaps a slight cyclic adjustment to hold pitch) and one can come down, or level off, with no change in AS.
The ability to disconnect ROC/D from airspeed is one of the key useful features of rotorcraft - they can go up or down with no airspeed change (or no airspeed at all).
4) now,
after 45:18, things seem to go out of control (huge increase in descent rate, with corresponding increase in AS) - but I bow to the opinions of the pros as to what occurred then.