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Fsbuild-2 Flight Planner • View topic - ISG 1.7?

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 Post subject: ISG 1.7?
PostPosted: Wed Jan 20, 2010 7:37 pm 
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Joined: Wed Apr 09, 2008 7:22 pm
Posts: 19
How about adding some DASH8-400 gauges?

I would love to have a MFD/EHSI made by ISG :)


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 Post subject: Re: ISG 1.7?
PostPosted: Thu Jan 21, 2010 8:22 pm 
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Joined: Mon Aug 25, 2008 9:25 pm
Posts: 96
Sorry, but I would prefer improved FMS functions (e.g. Max Rate and Max. Angle are not implemented yet).

It would be nice if you could tell the SMITH's maximum speeds both in KIAS and MACH and the vertical path would be tracked in a way that both limits would be respected (the turn over would be at about FL260).

In the moment it seems to me that the FMS follows a given climb (or descent) rate without caring for the resulting air speed. Furthermore I got the impression that it tries to meet the calculated TOC based on the given vertical rates. This results in the attempt e.g. climbing with 1500 fpm above FL350 which might be beyond the capabilities in most cases without loosing dramatically airspeed.

However, even most of the early a/p systems (in the 60th) had been able to follow a given airspeed and the modern ones can do that without a doubt (at least jets and bigger props I think).

To give an example:
Translated to the Cessna Citation X you could put in the limits of VMO 350 KIAS and MMO MACH 0.92 but for a climb the chosen speed would be 275 KIAS or MACH 0.82 up to initial FL410 to FL450 before building up speed according to the books and climbing to higher levels. In the moment I'm following those limits manually while switching off VNAV as 275 KIAS would result to overspeed at higher levels. Momentary it seems to me that the only measure is the given figure for KIAS and the resulting MACH number is derived from it. It can be overwritten manually but I got the impression that it has no functional influence. Ernie, I might be wrong and I would be happy to get the right advice e.g. how to handle the proper parameters in the aircraft configuration file. Maybe the limits are given by the model itself?

However, I like the capabilities of the gauges but progress is ever welcome. As I'm tinkering with FMXA in the moment, I don't use my Citation X anyway.

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Axel


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 Post subject:
PostPosted: Fri Jan 22, 2010 12:36 pm 
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Joined: Thu Apr 23, 2009 10:37 am
Posts: 73
Location: NYC & Florida
Hi Axel,
You are right but of course the gauges are universal and not made for that specific plane. I have second thought of replying back to you because you have been following ISG longer than i have.

But crazy enough, My B777 models(Overland, Posky) which uses the same perfomance files, flies as if the ISG Smith FMS was built with it.

It seems the more you fly with your equipment, The FMS gets smarter through the perfomance log it builds each time you fly.
(example)
1.I never trusted the fuel calculation before, I always gave it 20-30 percent more than what it calculated. But now its on point and trustworthy.

On the INIT REF Page; Your cruise wind input is very important and also the TOC OAT and should not be neglected for a perfect climb and cruise.

TOC: Now while during your climb. Anything before the TOC symbol on your path and the VNAV is activating. She is in control. If you adjust your V/S during climb sequence, The FMS will not only disagree with you but only make your situation worst by giving you a higher V speed rate of climb. Which would result in loss of airspeed.

Once you pass the TOC symbol you can adjust your V/S with no issues.
If you see your speed decreasing and your rate of climb is to high while the VNAV is activated, then input a lower altitude to your next waypoint in the FMS to lower your climb rate and increase speed.

PERFECT CLIMB
1. INIT REF page: Input average cruise wind and OAT <-------Important
2. ECON CLB page: Input something like 325 or 320, something to equal Mach /.69
3. ECON CRZ page: Input your aircraft Mach cruise. The given KIAS would be your cruise. If you choose to fly with KIAS rather than MACH.
4. LEGS page: Initiate the altitude given. If the first waypoint is /2600, then then retype 2600 in the scratchpad and input it in the first waypoint so it would display 2600A. Do the same procedure for the following waypoints up to your cruise altitude. If your airspeed decrease and your V/S is to high, Lower the altitude of the next wapoint in the FMS.

This is tested on Jets and the Smith FMS

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 Post subject: Re: ISG 1.7?
PostPosted: Fri Jan 22, 2010 4:32 pm 
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Joined: Thu May 19, 2005 3:45 pm
Posts: 3903
Location: NJ, USA


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 Post subject: Re: ISG 1.7?
PostPosted: Fri Jan 22, 2010 6:17 pm 
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Joined: Thu May 19, 2005 3:45 pm
Posts: 3903
Location: NJ, USA


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 Post subject:
PostPosted: Sat Jan 23, 2010 3:12 pm 
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Joined: Mon Aug 25, 2008 9:25 pm
Posts: 96

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Axel


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 Post subject: Re: ISG 1.7?
PostPosted: Sun Jan 31, 2010 1:29 pm 
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Joined: Sat Jan 30, 2010 3:59 pm
Posts: 3
Hi!

I have a suggestion, there are a lot of digital instruments like EFIS, but there aren't any smooth analog instruments available.
Different ADI's and HSI's are used on many different airplanes, I've seen one single ADI that's been installed on DC-10's, 727's and more.
Would be awesome to see a version with such instruments included, as I'm getting tired of those horrible jaggy-moving instruments included in almost every analog aircraft available.


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 Post subject: Re: ISG 1.7?
PostPosted: Tue Feb 02, 2010 5:14 am 
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Joined: Thu May 19, 2005 3:45 pm
Posts: 3903
Location: NJ, USA


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 Post subject: Re: ISG 1.7?
PostPosted: Tue Feb 02, 2010 4:25 pm 
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Joined: Sat Jan 30, 2010 3:59 pm
Posts: 3
Well, RXP is good but they only have GA gauges, and by the way, you could make it vector based.

Let's assume you have a vector-based attitude card and on top of that you have an alpha image, which is ball-shaped where the center is bright and the edges are darker.

With your knowledge and skill it is possible, I would do it myself if I had that knowledge, but I do not have it.


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 Post subject: Re: ISG 1.7?
PostPosted: Wed Feb 03, 2010 4:25 pm 
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Location: NJ, USA


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 Post subject: Re: ISG 1.7?
PostPosted: Wed Feb 03, 2010 6:54 pm 
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Joined: Sat Jan 30, 2010 3:59 pm
Posts: 3
Just replace the "vector" part of my idea with what you use in your gauges. (GDI+ perhaps?)

The main idea is that an alpha image that is painted such that it will make everything underneath it appear ball-like, could be placed on whatever code you use to make the gauges so smooth. 8)

Get the idea?


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 Post subject: Re: ISG 1.7?
PostPosted: Wed Feb 03, 2010 7:34 pm 
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Location: NJ, USA


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 Post subject: Re: ISG 1.7?
PostPosted: Wed Feb 17, 2010 2:44 am 
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Joined: Sun Feb 03, 2008 7:25 pm
Posts: 64
How about the FMS? Bombardier offers this on all of their corporate jets and the Dash-8s. The brochure at the bottom of the linked page shows all of its pages.

In terms of functionality, it would be nice to have SID/STAR support for the VR (heading to intercept radial) and VM (fly heading until manually terminated) legs. These two make up the majority of legs not possible using just Track to Fix.


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 Post subject: Re: ISG 1.7?
PostPosted: Wed Feb 17, 2010 11:23 am 
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Joined: Thu Sep 13, 2007 6:49 pm
Posts: 139
Location: Iceland/UK

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 Post subject: Re: ISG 1.7?
PostPosted: Thu Feb 18, 2010 4:25 pm 
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Joined: Thu Feb 18, 2010 3:52 pm
Posts: 10
How about an Airbus ND (and EFIS controls)?

Similar to the DU1000 and would be usable for any A318, 319, 320, 321, 330, 340 panel.

Just a thought....


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