Welcome Guest
HeliTorque
  
User Control Panel

Security Code: : Security Code
Type Security Code Here: :
 
Register Here
Lost Password?

Online Stats:
Visitors: 32
Members: 0
Total: 32

Membership:
New Today: 0
New Yesterday: 0
Registering: 0
Members: 6662
Latest: chrisw

Most Ever Online
Visitors: 447
Members: 10
Total: 457


HeliTorque :: View topic - Cyclic Friction on in flight
Forum FAQ
Forum FAQ
Search
Search
Memberlist
Memberlist
Usergroups
Usergroups
Profile
Profile
Contact Manager
Contact Manager
Log in
Log in
Log in to check your private messages
Log in to check your private messages
HeliTorque Forum Index » Flight Dynamics

Post new topic   Reply to topic All times are GMT
Cyclic Friction on in flight
View previous topic :: View next topic  
Author Message
Dark007
High Flying 'Torquer
High Flying 'Torquer


Offline
Joined: Dec 10, 2008
Posts: 118
Location: Portsmouth


uk.gif

PostPosted: Wed Sep 30, 2009 12:23 pm    Post subject: Cyclic Friction on in flight Reply with quote

Was just reading the following topic on PPrune - rotorheads.

http://www.pprune.org/rotorheads/390498-cyclic-friction-whilst-flying.html

Apparently a lot of pilots fly with some cyclic friction on. I was wondering who, if any, does that here and how you find it versus not using it.

I find that I don't consistently stay at the same speed when I'm in straight and level flight. With my instructor on board I usually end up drifiting slightly back from my 70 knot target airspeed toward 60 and when solo I drift slightly forward from 70 toward 80. I try and keep an eye on it, but I focus on something else for a minute, like navigation or ATC and I change speed which of course results in a change of altitude at that power setting and then I have to correct it again.

I know the R22 is meant to be twitchy and difficult, but would putting some cyclic friction on help? Am I allowed to do that as a student in an R22?

Any and all opinions welcome.
_________________
PPL(H) R22, R44, R66 (0.05 hours Smile)
Hourbuilding...
Back to top
View user's profile Send private message
afterburner
H Addict
H Addict


Offline
Joined: Feb 20, 2008
Posts: 1059
Location: New York


usa.gif

PostPosted: Wed Sep 30, 2009 2:25 pm    Post subject: Friction Reply with quote

It depends on two things: the aircraft itself, and the pilot.

Most of the time, I will set the collective friction only when at cruise altitude. Using the cyclic friction depends on the aircraft and how stable it can be with any friction being used in flight. The Bell47 needed a bit of friction as the cyclic tended to be a bit of a heavy feel (for me at least). The Schweizer 300 gets along fine without any fiction on the cyclic, but then again it has stick trim, whereas the Bell206 needs a "touch" to make flying it virtually effortless. The Schweizer 500 can go either way. Many Robinson pilots put on cyclic friction all the time.

I would recommend that NO friction is used until the copter is airborne and at cruise altitude. Think of "friction" as the poor man's auto-help.
hahaha. Let it help, but not control.

The problem with many pilots is they use "too much" friction which hampers movement of the cyclic and can "mask" a developing problem in the control system. Vibration in the controls tells us something about what the copter is, or wants to do. It is a valuable tool.

At times, I fly with no frictions on at all in that I love hand flying even if it gets a bit tedious. It's all in the fun of it. Laughing
_________________
"A Copter Pilot's Life has it's... ups and downs"
Bell 47-206, Schweizer 300/500, Citation 525
Back to top
View user's profile Send private message
paddywak
H Addict
H Addict


Offline
Joined: Mar 28, 2009
Posts: 537
Location: UK


uk.gif

PostPosted: Wed Sep 30, 2009 4:41 pm    Post subject: Reply with quote

Have you tried using the balancing trim springs in the cruise? I find it lightens the load. If I remember correctly, by pulling the knob it cancels out some of the longitudinal forces.
Back to top
View user's profile Send private message
Dark007
High Flying 'Torquer
High Flying 'Torquer


Offline
Joined: Dec 10, 2008
Posts: 118
Location: Portsmouth


uk.gif

PostPosted: Thu Oct 01, 2009 10:30 am    Post subject: Reply with quote

I do pull the trim knob when in cruise (when I remember - I'm so used to not using it when doing circuits)

I'll have to ask my instructor what he thinks of using cyclic friction...
_________________
PPL(H) R22, R44, R66 (0.05 hours Smile)
Hourbuilding...
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    HeliTorque Forum Index » Flight Dynamics All times are GMT

 
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Sponsors


Billund Air Center

Visit HeliTorque!