[simpits-tech] RE: [simpits-tech]F-16 Side-Stick-Base

[Craig Rochester]

Marv,

Thank you very much.  That helps a lot.  Three real sticks say it all for me; 19 lbs. it is. :)  I
didn't know the flight control system's control variable was G's... that's cool.  Makes sense when
the pilot's G-tolerance is the limiting factor in hard maneuvers.

Thanks again for your help,

Craig R.

-----Original Message-----
From: simpits-tech-admin@simpits.org
[mailto:simpits-tech-admin@simpits.org]On Behalf Of Marv De Beque
Sent: Thursday, August 07, 2003 12:31 PM
To: simpits-tech@simpits.org
Subject: Re: [simpits-tech] RE: [simpits-tech]F-16 Side-Stick-Base


I find the reverse is true when actually seated in a cockpit with everything
set in the correct orientation (seat, stick position and grip orientation,
rudders, etc.).

A friend of mine is/was an F-16 driver and he stated that the position that
most pilots adopt when flying the Falcon is with their head and upper torso
slightly erect as opposed to laying back fully in the seat.

The correct force for pitch down is 19 lbs. for full deflection.

I think one of the documents you gave me, Craig, also backs this up with an
explanation.

I have three real side sticks that also seem to back up that number, but
since these are removed from service, I can't be certain that their
calibration is still good.

Additionally, the electronic flight control system of the Falcon is set so
as to produce a set amount of G force that is proportional to the amount of
force applied to the grip unlike conventional aircraft that yield a set
amount of elevator deflection for a set amount of stick movement.  If that
force is the same for both directions in pitch, then it makes sense that the
forward force required would achieve maximum G's in the negative direction
is less than pulling back would.

Marv


On 8/7/03 9:30 AM, "Rochester, Craig" <CRochester@biopure.com> wrote:

>
> Thanks ben,
>
> I agree with you for 2 reasons:
>
> 1.    After "flying" my test rig, I find that I have a better mechanical
> advantage for pushing the stick forward.  Because shoulder is supported by
> seat back.  I didn't expect this.
> 2.    The pitch-down axis was purposely limited in travel to reduce over
> controlling.  Why would you make it stiffer but lower the max force?
>
> Anyone see it differently?
>
> Thanks,
>
> Craig R.
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