[jhb_airlines] Re: Autopilot APPR HOLD problem

  • From: "Mike Brook" <mike.brook@xxxxxxxxxxxxxx>
  • To: <jhb_airlines@xxxxxxxxxxxxx>
  • Date: Mon, 17 Oct 2005 20:49:05 +0100

The wonderful Citation X, driven by a pair of R-R (Allison) AE3007C (or
C1) turbofans the FADEC for which I had the privilege of Project
Managing the design, development and production of in my previous,
pre-retirement, life.  Aaah!, them was the days... <g>

MikeB
JHB193

> -----Original Message-----
> From: jhb_airlines-bounce@xxxxxxxxxxxxx
> [mailto:jhb_airlines-bounce@xxxxxxxxxxxxx]On Behalf Of Bones
> Sent: Monday, October 17, 2005 7:04 PM
> To: jhb_airlines@xxxxxxxxxxxxx
> Subject: [jhb_airlines] Re: Autopilot APPR HOLD problem
>
>
> Ah - quite a different kettle of fish.
>
> The Citation X is the almost sonic jobbie with the
> supercritical wing -
> Cessna's challenge to the Gulfstream range. I think you could
> fit a CJ1
> inside it.. <g>
>
> bones
>
> -----Original Message-----
> From: jhb_airlines-bounce@xxxxxxxxxxxxx
> [mailto:jhb_airlines-bounce@xxxxxxxxxxxxx] On Behalf Of Mike Lucas
> Sent: 17 October 2005 17:15
> To: jhb_airlines@xxxxxxxxxxxxx
> Subject: [jhb_airlines] Re: Autopilot APPR HOLD problem
>
>
> The panel is for Citation X, FS2004.
>
> Mike L
>
> Bones wrote:
> > I don't have any values for the CJ2 here and it could easily have
> > different flap settings to the CJ1. The existing aircraft.cfg values
> > are 0, 15 and 45 as you note and would seem to follow the current
> > trend on some aircraft of absolute minimum flap settings
> (up, take off
> > and land).
> >
> > The CJ1 I've had the pleasure to fly in is different and it has flap
> > values of 0, 15, 35 and 50. Here are the book figures:
> >
> > T/0 Weight    15 deg Flap Setting   0 deg Flap Setting
> >                  V1  Vr  V2            V1  Vr  V2
> > 10600           107 107 111           113 113 119
> > 10000           102 103 108           109 109 115
> > 9500             98 100 105           105 105 113
> > 9000             97  97 103           102 102 110
> > 8500             97  97 103            98  98 107
> > 8000             97  97 104            98  98 107
> > 7000             97  98 106            98  98 109
> >
> > Stall Speeds
> >
> > Zero Angle of Bank, Landing Gear UP or Down, KCAS
> >               Flap Position
> > Weight     Land   15deg    UP
> > 10600       86      91     98
> > 10000       83      89     95
> > 9500        81      87     93
> > 9000        79      85     91
> > 8500        77      82     88
> > 8000        75      80     86
> > 7500        73      78     83
> > 7000        70      75     80
> >
> > Take-Off 0 and 15 degs flaps
> > Landing Approach 15 degrees
> > Full Flaps Land 35 degrees
> > On Landing Flaps 50 degrees...used to help braking
> >
> > Note that 50 flap is only used as an after landing speed brake so we
> > really only need 0, 15 and 35 in FS. However that is for the CJ1 and
> > as there are so many versions of the Citation out now (which I have
> > totally lost track
> > of) it could well be that other versions have different
> flap settings. The
> > Citation X is quite a different beast to the little CJ1!
> >
> > Also note that in the CJ1 figures above the Max Landing
> Weight is just
> > 10600lb whilst the CJ2 is up at 15200lb. I would therefore
> expect the
> > speeds to be a touch higher. For the CJ1 a rotate speed of about
> > 105/115kts seems average and an approach speed of 106kts at
> max weight
> > looks good (as Va = Vs x 1.23). I'll hunt around and see if
> I can find
> > the CJ2 figures but expect them to be a touch higher than these.
> >
> > You can easily alter the aircraft.cfg values if you wish. As a
> > reminder put the original values in the comment section so you
> > remember them - they can go anywhere after the // symbols.
> Just out of
> > interest did it say which variant of Citation the panel was for?
> >
> > bones
> >
> > -----Original Message-----
> > From: jhb_airlines-bounce@xxxxxxxxxxxxx
> > [mailto:jhb_airlines-bounce@xxxxxxxxxxxxx] On Behalf Of Mike Lucas
> > Sent: 17 October 2005 12:29
> > To: jhb_airlines@xxxxxxxxxxxxx
> > Subject: [jhb_airlines] Re: Autopilot APPR HOLD problem
> >
> >
> > Bones
> >
> > I was trying to find out what flap settings exist on the real-world
> > Citation.  If there are 4 (0, 5, 15, 35), as the panel I am
> now using
> > would seem to suggest, can I modify the current entry in
> aircraft.cfg
> > -
> >
> > [Flaps.0]
> > type             = 1          // 1 - tail, 2 - lead
> > span-outboard    = 0.8        // 0.0 .. 1.0
> > extending-time   = 5          // seconds
> > system_type      = 0
> > flaps-position.0 = 0          // degrees
> > flaps-position.1 = 15          // degrees
> > flaps-position.2 = 45         // degrees
> > damaging-speed   = 250        // KIAS
> > blowout-speed    = 300        // KIAS
> >
> > by inserting an additional line for flaps 5, and amending
> flaps 45 to
> > flaps 35?  Or is such tinkering another minefield .... ?
> >
> > Mike L
> >
> > Bones wrote:
> >
> >
> >
> >
>
>
>
>



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