Just curious......how does inverted flight work?

[y2kgtp]

how does inverted flight work? Do the blades somehow adjust to reverse?

[DebianDog]

The pitch (angle) of the blade is moved from positive to negative. Typically pilots will run +10/-10 or positive 10 degrees to negative 10 degrees.

[BarracudaHockey]

To add to what Dan said, in Idle up or Stunt Mode with the blades at 0 degrees pitch the throttle is at approx 50 percent, as you increase the stick the blades increase positive pitch and the throttle goes from 50 to 100 percent. As you go from mid stick to full down stick the blades increase negative pitch but the throttle also goes from 50 to 100 as the negative pitch increases.

Its what throttle and pitch curves are used for.

[sleddog7]

This can only be done with a collective pitch helicopter. Fixed pitch will not.

[y2kgtp]

To add to what Dan said, in Idle up or Stunt Mode with the blades at 0 degrees pitch the throttle is at approx 50 percent, as you increase the stick the blades increase positive pitch and the throttle goes from 50 to 100 percent. As you go from mid stick to full down stick the blades increase negative pitch but the throttle also goes from 50 to 100 as the negative pitch increases.

Its what throttle and pitch curves are used for.

So, throttle off is dead center of the stick? and throttle is also linked to blade pitch?

[Bayou Talker]

In Idle Up mode, there is no "Throttle Off". It is only decreased to about 50% at mid stick and speed increases as you move in either direction (+/-). Increasing negative pitch alone does not allow for inverted flight. Throttle also must increase to provide the same head speed as in upright normal flight.

[slikrx]

I can't really add anything to what's bee said already except:

If you look at Finless' "Throttle and Pitch Curves 101" video, it might help explain a
bit.

Look in this thread: (a TON of other vids as well)

http://www.helifreak.com/viewtopic.php?t=12455

[BarracudaHockey]

The whole point of idle up is so that you have a constant head speed no matter what the pitch (positive of negative)

As the pitch increases (in either direction) the load on the rotor system incrases so you need more throttle to keep the same head speed, as you decrease pitch you unload the rotor system so you need to take away throttle.

There's two ways to accomplish that, use a governor that senses engine rpm and controls the throttle servo, or pitch/throttle curves.

[y2kgtp]

Thanks all, I think I got it now.....I have been playing in the simulator a bit, and figured out how it works as well. Granted, I need a better controller than a dual analog stick game pad, but does the job for the moment.