[jhb] Re: Bizjet Query
- From: "Fossil" <fossil@xxxxxxx>
- To: <jhb@xxxxxxxxxxxxx>
- Date: Sun, 25 Apr 2010 16:21:28 +0100
Have a look at
http://www.flightglobal.com/articles/2004/04/13/180343/flight-test-gulfstrea
m-g550-longer-ranger.html
This air test says that in clean config the G550 has a Vref of 134, Max Safe
Pitch Angle (Amber light on PSI) of 124kts, Stick Shaker starts at 110kts
and Stick Push is 100kts.
With gear and flaps down the stick shaker triggers at 91kts and stick push
at 86kts.
It doesn't specify actual stall speeds but in most aircraft the stick push
is designed to operate approximately 7kts before the stall. This would
suggest clean stall is around 93kts and dirty stall just 79kts.
In a separate article VMCa speed is just 112kt so that ties up with the
above figures. Maybe the figures you saw had VMC and stall mixed up.
bones
bones@xxxxxxx
-----Original Message-----
From: jhb-bounce@xxxxxxxxxxxxx [mailto:jhb-bounce@xxxxxxxxxxxxx] On Behalf
Of Gerry Winskill
Sent: 25 April 2010 08:49
To: jhb@xxxxxxxxxxxxx
Subject: [jhb] Re: Bizjet Query
I'll try that weight as well, though without too much optimism. I also
check at a likely minimum landing weight and that stall came at a pretty
unlikely 70kias.
It's also dodgy in autopilot. When I try an APPR ILS capture it seems
unable to capture, or hold, the glideslope. I wouldn't have thought that
was influenced by anything but the AUTOPILOT section of Aircraft,cfg and
that looks quite normal. To eliminate Panel oddities I'm f testing
whilst using the Panel I made for the Citation.
It's also odd if I connect the AP and Alt on takeoff, pitching up to a
much higher angle than Aircraft.cfg dictates.
If anyone would like to try it, to see if it behaves any better on AP,
just shout and I'll put the aircraft on my download site.
Gerry Winskill
Fossil wrote:
> Try again at MAUW. Tests are always done at MAUW in case of worst scenario
> (aircraft has a problem and needs to land well above MLW).
>
> bones
> bones@xxxxxxx
>
>
> -----Original Message-----
> From: jhb-bounce@xxxxxxxxxxxxx [mailto:jhb-bounce@xxxxxxxxxxxxx] On Behalf
> Of Gerry Winskill
> Sent: 24 April 2010 17:58
> To: jhb@xxxxxxxxxxxxx
> Subject: [jhb] Re: Bizjet Query
>
> First problem.
>
> To set up one of my gauges I need a number of stall sppeds. One is Stall
> Dirty, with gear down and max flaps. I identify the speed at max landing
> weight and with minimum acceptable fuel load. The real Gulfstream 550 is
> said to have a dirty stall speed, unidentified weight, of 112 ktas. I'm
> down to 80 kias, at 9000 ft, before it stalls. Bit of a reallity gap then!
>
> Is there anything in the Aircraft.cfg that I can tweak, to increase
> stall speed?
>
> Gerry Winskill
>
> Gerry Winskill wrote:
>> Just found one, for FSX, on Surclaro.
>>
>> Just about to record performance data. Well, start the job.
>>
>> Gerry Winskill
>>
>> Frank Fisher wrote:
>>> Gerry
>>> If I recall, I downloaded a freeware version, which was an updated
>>> FS9, and to be honest looked liked an updated FS8, did not stay long
>>> on my drive.
>>> Try this, I think from Flightsim.com gulfivx2.zip (that is an i not a
>>> one)
>>> Frank
>>> ----- Original Message ----- From: "Gerry Winskill" <gwinsk@xxxxxxx>
>>> To: "JHB Restricted" <jhb@xxxxxxxxxxxxx>
>>> Sent: Friday, April 23, 2010 8:59 PM
>>> Subject: [jhb] Bizjet Query
>>>
>>>
>>>> For IFR flights I normally use the Citation, since a bizjet seems a
more
>>>> logical way of flying non scheduled routes than heavier metal.
>>>>
>>>> Now, though, I'd like to use something a bit larger, so the Gulfstream
V
>>>> springs to mind. But, I can't find one. Anyone know of a version for
>>>> FSX?
>>>>
>>>> Gerry Winskill
>>>>
>>>
>>>
>
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>>
>
>
>
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