|
Post by jimhalinda on Jun 29, 2009 15:38:57 GMT
Hi all, Given this information (note the 'Stabilizer Settings for Take-Off' chart at upper left): I'd like to use these stabilizer trim settings for takeoff. My question is this: are all 'trim' gauges created equal, i.e. can I use any such gauge on a DC-8 panel to determine the trim setting of an HJG DC-8, or do they have to be calibrated for each individual aircraft (similar to the way an N1 engine gauge would be, for example)? Same question goes for a CoG gauge - could I just put the default Concorde CoG gauge on a DC-8 panel and get a correct reading? Any ideas appreciated! It would be nice to be able to set the 'exact' trim needed for takeoff. Regards, Jim
|
|
|
Post by aerofoto - HJG Admin on Jun 29, 2009 19:48:22 GMT
I'm not too sure to be precise Jim .... but .... I have been told that DC8's (generally) do have quite a wide CoG .... in comparison with some other aircraft types like the B707/720. You may indeed be venturing into the realms of virtual FS world limitations versus reality here ! Mark C BOG/CO
|
|
|
Post by skyking on Jun 30, 2009 1:21:01 GMT
Couple of points, if I may.
First, there is no trim "gauge" on a DC-8. And second, there is no C of G gauge either. The %MAC value is given the crew by Load Planning. Then the S/O goes to the chart and finds the proper 'trim', given in units of Nose Up depending on weight and flap setting. While it's hard to read the units on the HJG DC-8 Pedestal, as long as you have it past half-way towards the bottom of the scale, you'll be in good shape. I'm sure you know about the 'pop-up' Pedestal Window. That shows the trim scale along with the throttles, spoiler lever, and flap handle.
Hope this helps.
Edit/Add: While the scale on the pedestal isn't quite right on the FS models (the 'real' one is scaled from -1 degree to + 10 degrees), as long as you have it set as I stated above, you will be alright. Remember, that the 'default' aircraft will be at max gross unless you have your own flight saved at a different value.
|
|
|
Post by aerofoto - HJG Admin on Jun 30, 2009 2:31:16 GMT
Thanks for that "SKY KING". That's helpful information ! Mark C BOG/CO
|
|
|
Post by jimhalinda on Jun 30, 2009 3:45:13 GMT
Thanks for that, SkyKing. I know that in real life the CoG was calculated manually, and trim was read from the scale markings on the pedestal. I just wondered if using native FS2004 gauges (like the Concorde CoG gauge) would give reasonably accurate values for CoG and stab trim so I could try to set trim accordingly. As you say, the pedestal markings in the HJG DC-8 panels don't really give you the info.
In some other aircraft (such as the SamDim TU-114), the tooltip for the trim wheel gives the actual value in degrees, so I wondered if this could be done with the HJG pedestal.
And I always reduce fuel as I tend to take shorter hops, so I rarely take off anywhere near max weight. While I love the feeling of a heavy takeoff, I rarely have time for flights longer than an hour or two!
Regards,
Jim
|
|
|
Post by skyking on Jun 30, 2009 16:06:20 GMT
I am not familiar with the Concorde CoG gauge as I don't have that a/c in my sim. Guess you could try it.
Don't know about the TU-114 either, but I know Cal Classic's Convairs have a little trim window with units in it. Can't remember if the 'real' Convairs had that or not as I only Jump-seated in them; never flew them.
|
|