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blahhhblahhh

Some questions about the HP850xp

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Hi,

A lot of interrogations about this aircraft, if someone could help me ;)

- Do we need to keep the fuel pumps ON during the cruise?
- Is the APR system dummy for takeoff and landing?
- Is the engines sync feature simulated?
- Does someone understood differences between GS vs VGS and VS vs VVS AP modes?

 

Thanks for your help.


Bonus question: when I update the Navigraph data (cycle 1505), approaches and stars seem to be wrong (for both h850xp and s550, but everything is correct in pmdg airplanes).
Do you also notice this?

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Well... VGS doesn't exist in the real aircraft... that would be a big difference. VVS means it's VS hold mode with VNAV active. Everything else... well, no... the systems aren't modeled so it really doesn't matter at all.

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Well... VGS doesn't exist in the real aircraft... that would be a big difference. VVS means it's VS hold mode with VNAV active. Everything else... well, no... the systems aren't modeled so it really doesn't matter at all.

 

Ed no vertical glide scope - so is this why Carenado Hawker does not descend when GS  captured ? if so no wonder its not working - thats fine but need to know one way or the other - thanks

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Ok... V means nothing but the fact VNAV is active. VNAV can NOT EVER BE ACTIVE when G/S is active. EVER.

 

G/S means vertical glideslope... after all, there's no such thing as a lateral glideslope. :wink:

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Ok... 

"G/S means vertical glideslope... after all, there's no such thing as a lateral glideslope"

 

Yes but has this been modeled in Carenado hawker ? I'm not sure as I have not seen it work yet

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"G/S means vertical glideslope... after all, there's no such thing as a lateral glideslope"

 

 

Yes but has this been modeled in Carenado hawker ? I'm not sure as I have not seen it work yet

I can't find anything modeled, to be honest. Even the default aircraft autopilots perform more predictably than this.

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I can't find anything modeled, to be honest. Even the default aircraft autopilots perform more predictably than this.

 

Ah great Ed - thank you - thats not good - I cant understand why Carenado has been doing this a long time Biz Jet or not - They get the basic concept and these are the basic expected things that should work - hope they are tightening this up been very quiet on the Hawker side of things on Their site - keeping the faith luv the feel and looks of the bird

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Oops, I misread, it was VGP.
I've checked the xml code of the pfd and I found the following vertical modes:

 

GS
VS
ALTS
FLC
ALT
PTCH
VALTV
VALTS
VVS
VGP
VFLC
VALT
VPTCH

 

Conditions for VGP mode:
((A:HSI CDI needle valid, bool) (A:NAV HAS GLIDE SLOPE:1, bool) (A:NAV HAS GLIDE SLOPE:2, bool) or and (L:FMC_VNAV_ENABLED) and)

 

So it's just a captured GS following mode when vnav was activated...


Anyway, It'll be great if Carenado provides us a documentation....


I can't find anything modeled, to be honest. Even the default aircraft autopilots perform more predictably than this.

 

humm, you're right... VS/GS/PTCH/FLC seem to do not work properly for me. but maybe im wrong...

PTCH: the plane go down to the ground.

GS: the glidescope is captured but almost never followed properly.

VS: Don't respect the altitude set thru the FGP

FLC: too laggy....

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I can't find anything modeled, to be honest. Even the default aircraft autopilots perform more predictably than this.

So this Hawker is even worst than the Citation S550?

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So this Hawker is even worst than the Citation S550?

 

3d modeling/texturing : awesome as always

system modelling: everything is dummy (like all carenado's birds?)

flight behavior: I don't know, i'm not a pilot (but easy to flight)

 

maybe something i don't understand with the ap...

the good point is the fms: we still cannot load/save flightplans but I noticed no bug (not like the s550).

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Yes... VGP is different. It requires VNAV and a GPS approach with vertical guidance... not just RNAVs.

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Thanks you guys for explications about the VGP mode, I'll sleep less stupid tonight.

Also I've tried to tweak the autopilot section of the aircraft.cfg file in order to get the GS/FLC vmode working properly.
I've found some values which seem to be working fine for default FSX aircrafts, and they also seem to be perfect for the hawker:

 

//gs_proportional_control=9.520000
//gs_integrator_control=0.260000
//gs_derivative_control=0.000000
//gs_integrator_boundary=0.700000
//gs_derivative_boundary=0.000000
gs_proportional_control=14.0
gs_integrator_control=0.65
gs_derivative_control=0.00
gs_integrator_boundary=0.70
gs_derivative_boundary=0.00

 

Now, they are no more lag using the FLC mode and the autopilot follow the GS path successfully.

Maybe these values have to be adjusting finely but this is better anyway.

 

ps: Sorry for my poor english

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Another strange things with the AP mode displayed on the PFD:

- when we engage the AP without engaging the YD first, no 'AP' indication is displayed on the PFD...

- when a GS signal is received, the GS indication is diplayed in green without engaging any APPR mode...


But I still don't understand why the VS mode does not respect the ALT set on the FGP...

Is it the the real behavior to have to set the selected alt then use the pitch knob to ajust the vs rate?

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Ok... just don't waste your time asking a question like that again... LOL

 

There's nothing about how this addon's autopilot behaves that's "real behavior".

 

With a real Pro Line 21 any time you have a vertical mode active, there is always a target altitude to be captured. Always. The Alt knob would only change the target altitude. The ALT button would only capture the aircraft's current altitude. The VS button would track a vertical speed. The wheel on the FGP would allow you to adjust the vertical speed.

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Thanks you guys for explications about the VGP mode, I'll sleep less stupid tonight.

 

Also I've tried to tweak the autopilot section of the aircraft.cfg file in order to get the GS/FLC vmode working properly.

I've found some values which seem to be working fine for default FSX aircrafts, and they also seem to be perfect for the hawker:

 

//gs_proportional_control=9.520000

//gs_integrator_control=0.260000

//gs_derivative_control=0.000000

//gs_integrator_boundary=0.700000

//gs_derivative_boundary=0.000000

gs_proportional_control=14.0

gs_integrator_control=0.65

gs_derivative_control=0.00

gs_integrator_boundary=0.70

gs_derivative_boundary=0.00

 

Now, they are no more lag using the FLC mode and the autopilot follow the GS path successfully.

Maybe these values have to be adjusting finely but this is better anyway.

 

ps: Sorry for my poor english

 

Thanks for the efforts - much appreciated give these a go asap

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@ Mr Blahhh!

 

I think this rendition of the Hawker will cruise around quite happily without the pumps going until it runs out of gas.

 

From the Pilot Training Manual, the electric pumps are ON for all normal operations, so for shear realism, yes, they stay on for the whole flight. Apparently the centre tank fuel cannot be transferred to either main without at least one of them working, although this feature is not modelled either... See autogyro's post about that, there is a suggestion for a mod to one of the XML files and he uses this feature as an example.

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Thanks Chris for your answer. Do you know if it is the same for ignition?

Yes I saw the fuel flow mod by Autogyro, it works fine, big thanks to him.


Does someone know great websites to find aircraft documentation?

I only known smartcockpit.com but it's not so complete for the hawker.

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Thanks Chris for your answer. Do you know if it is the same for ignition?

Yes I saw the fuel flow mod by Autogyro, it works fine, big thanks to him.

 

Does someone know great websites to find aircraft documentation?

I only known smartcockpit.com but it's not so complete for the hawker.

On the real aircraft, fuel boost pumps would normally be turned on before engine start, and left on until after shutdown, but I don't believe it makes a difference one way or the other in the Carenado emulation.

 

By contrast, the ignition switches on the real aircraft do NOT have to be switched on for starting. The igniters will fire automatically during the start sequence until the engine is stabilized at idle.

 

The main purpose of the switches is to provide continuous ignition for flameout protection during takeoff and landing , or when flying in heavy precip or in icing conditions.

 

However, in the Carnado version, the engines will not start if the ignition switches are off.

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I've found some values which seem to be working fine for default FSX aircrafts, and they also seem to be perfect for the hawker:

 

//gs_proportional_control=9.520000

//gs_integrator_control=0.260000

//gs_derivative_control=0.000000

//gs_integrator_boundary=0.700000

//gs_derivative_boundary=0.000000

gs_proportional_control=14.0

gs_integrator_control=0.65

gs_derivative_control=0.00

gs_integrator_boundary=0.70

gs_derivative_boundary=0.00

 

 

Hi noticed only these exist in cfg file 

 

gs_proportional_control=14.0

gs_integrator_control=0.65

gs_derivative_control=0.00

gs_integrator_boundary=0.70

gs_derivative_boundary=0.00

 

do I add all of these lines ? thanks

 

//gs_proportional_control=9.520000

//gs_integrator_control=0.260000

//gs_derivative_control=0.000000

//gs_integrator_boundary=0.700000

//gs_derivative_boundary=0.000000

gs_proportional_control=14.0

gs_integrator_control=0.65

gs_derivative_control=0.00

gs_integrator_boundary=0.70

gs_derivative_boundary=0.00

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