Simviation Forum - Short Stirling problem

May 3^rd, 2010 at 1:06pm

Zaphod Offline
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Hi all.
Has anyone else tried the Short Stirling on page 115 of FS2004 Vintage page (s29_v5)? For some reason mine flies straight and level with a 10 degree nose down attitude. Very strange.

Zaphod Undecided

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Reply #1 - May 3^rd, 2010 at 2:52pm

Fozzer Offline
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Zaphod wrote on May 3^rd, 2010 at 1:06pm:

Hi all.
Has anyone else tried the Short Stirling on page 115 of FS2004 Vintage page (s29_v5)? For some reason mine flies straight and level with a 10 degree nose down attitude. Very strange.

Zaphod Undecided

Are you complaining about the length of the Stirling, Zaph?

You would like a longer one?

Paul... Wink

...

...!

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Reply #2 - May 3^rd, 2010 at 3:04pm

Zaphod Offline
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Fozzer wrote on May 3^rd, 2010 at 2:52pm:

Zaphod wrote on May 3^rd, 2010 at 1:06pm:

Hi all.
Has anyone else tried the Short Stirling on page 115 of FS2004 Vintage page (s29_v5)? For some reason mine flies straight and level with a 10 degree nose down attitude. Very strange.

Zaphod Undecided

Are you complaining about the length of the Stirling, Zaph?

You would like a longer one?

Paul... Wink

...

...!

No Fozz. The length is fine but when it's not straight it becomes difficult to aim!
Always a problem Wink

Zaph...

What doesn't kill you makes you stronger. But why take the risk?
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Reply #3 - May 4^th, 2010 at 7:10am

beaky Offline
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Zaphod wrote on May 3^rd, 2010 at 3:04pm:

Fozzer wrote on May 3^rd, 2010 at 2:52pm:

Zaphod wrote on May 3^rd, 2010 at 1:06pm:

Hi all.
Has anyone else tried the Short Stirling on page 115 of FS2004 Vintage page (s29_v5)? For some reason mine flies straight and level with a 10 degree nose down attitude. Very strange.

Zaphod Undecided

Are you complaining about the length of the Stirling, Zaph?

You would like a longer one?

Paul... Wink

...

...!

No Fozz. The length is fine but when it's not straight it becomes difficult to aim!
Always a problem Wink

Zaph...

"Like shooting pool with a rope", as George Burns used to say... Grin

I'm not familiar with that model, but for starters you might want to play with the payload a little (Aircraft/ Fuel and Payload).

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Reply #4 - May 4^th, 2010 at 7:22am

Fozzer Offline
Colonel
An elderly FS 2004 addict!
Hereford. England. EGBS.

Posts: 24861

beaky wrote on May 4^th, 2010 at 7:10am:

Zaphod wrote on May 3^rd, 2010 at 3:04pm:

Fozzer wrote on May 3^rd, 2010 at 2:52pm:

Zaphod wrote on May 3^rd, 2010 at 1:06pm:

Hi all.
Has anyone else tried the Short Stirling on page 115 of FS2004 Vintage page (s29_v5)? For some reason mine flies straight and level with a 10 degree nose down attitude. Very strange.

Zaphod Undecided

Are you complaining about the length of the Stirling, Zaph?

You would like a longer one?

Paul... Wink

...

...!

No Fozz. The length is fine but when it's not straight it becomes difficult to aim!
Always a problem Wink

Zaph...

"Like shooting pool with a rope", as George Burns used to say... Grin

I'm not familiar with that model, but for starters you might want to play with the payload a little (Aircraft/ Fuel and Payload).

Zaph and I sometimes go off on a different tack.. Wink

...

...!

Paul... Grin

...

...!

Short Stirling/Long Stirling/Urination problems?.. Embarrassed

...

...!

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Reply #5 - May 4^th, 2010 at 7:51am

microlight Offline
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Have you been on the Smarties again, Paul? Wink

Zaphod,
Might be too much lift in cruise. Look to see if you have a [flight_tuning] section in the aircraft.cfg. If so, the first entry will be 'cruise_lift_scalar='; decreasing this number will raise the nose in level flight.

Wink

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Reply #6 - May 4^th, 2010 at 8:40am

Zaphod Offline
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Microlight.
Thanks for the idea but I have changed the "cruise_lift_ scalar" from 1.0 to 0.1 in stages but it made no difference.
Here is the flight tuning entry;

[flight_tuning]
elevator_effectiveness =1.0
aileron_effectiveness =1.0
rudder_effectiveness =1.0
elevator_trim_effectiveness =1.5
aileron_trim_effectiveness =1.0
rudder_trim_effectiveness =1.0
pitch_stability =1.2
roll_stability =1.2
yaw_stability =1.0
cruise_lift_scalar =0.1
p_factor_on_yaw =0.5
parasite_drag_scalar =0.5
induced_drag_scalar =0.5
hi_alpha_on_roll =1.0
hi_alpha_on_yaw =1.0
torque_on_roll =1.0
gyro_precession_on_roll =1.0
gyro_precession_on_yaw =1.0

Best.
Zaphod

What doesn't kill you makes you stronger. But why take the risk?
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Reply #7 - May 4^th, 2010 at 9:39am

Zaphod Offline
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Well, I'm ashamed to say that a complete failure on my part to read the reference material which is supplied with the download has resulted in me applying way to much throttle and therefore speed and if you keep to the published speed the aircraft does not pitch down at all. In fact it looks really nice and is definately a "keeper" in my hanger.
Sorry for any inconvenience and appologise to the author.

Zaphod Roll Eyes

What doesn't kill you makes you stronger. But why take the risk?
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Reply #8 - May 8^th, 2010 at 12:42am

Capt.Propwash Offline
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i dont have this aircraft in question, but i do sometimes get the same affect on my F14D Rev3 when I have flaps @ 2 notches, and i have the throttle up a little too high and I try to trim it out level. .... the nose goes -5 to -10 degrees pitch, but the aircraft gains altitude like a rocket instead of gently falling to the earth. Slow down, and it will level itself off with the flaps.

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