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Forum: Rotorheads

9th May 2006, 02:22

Replies: 95

why does the nose pitch forward when you lower collective?

Views: 17,840

Posted By Dave_Jackson

Deemar You are correct ~ as well. ...

Deemar

You are correct ~ as well.

There is no such thing as an 'Absolutely' Rigid Rotor but the phrase 'Rigid Rotor' was already taken. http://www.unicopter.com/Cry.gif

The expression...

Forum: Rotorheads

8th May 2006, 19:57

Replies: 95

why does the nose pitch forward when you lower collective?

Views: 17,840

Posted By Dave_Jackson

cl12pv2s You are correct. I was...

cl12pv2s

You are correct.

I was thinking in terms of 'Absolutly' Rigid Rotors (zero phase lag). The previous reply in this posting has been removed.

Dave

Forum: Rotorheads

7th May 2006, 20:21

Replies: 95

why does the nose pitch forward when you lower collective?

Views: 17,840

Posted By Dave_Jackson

FanPilot, If you eliminate the primary...

FanPilot,

If you eliminate the primary cause, i.e. the HS, then 'flap-back ~ blow-back' [http://www.unicopter.com/B267.html#Flapback] of the rotor will probably have the next greatest effect on...

Forum: Rotorheads

7th May 2006, 18:16

Replies: 95

why does the nose pitch forward when you lower collective?

Views: 17,840

Posted By Dave_Jackson

I second Nick's motions.

Some have mentioned that the fuselage must be descending for the HS to be able to pitch the craft nose down. Others have suggested that the craft pitches nose down, then it starts to descend. The...

Forum: Rotorheads

2nd May 2006, 22:21

Replies: 95

why does the nose pitch forward when you lower collective?

Views: 17,840

Posted By Dave_Jackson

34' If the examiner does not give the...

34'

If the examiner does not give the helicopter's configuration, you can quite honestly state that 'pitch reduction due to torque reduction, is because of the pitch-torque coupling'. :eek:

...

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