ZazenCID

Civil Aircraft Applications

In the article Head-up display you just added a large section on Civil Aircraft Applications, which is great, but it looks like it was written for someone already familiar with the specifics, and could be confusing to people unfamiliar with the subject matter.

The section below was removed by me for a couple of reasons, because you are discussing a copyrighted photo on another website. Since you obviously have knowledge of the subject, could you re-write this section and include a picture that obeys the wiki copyright laws (which can be found here).

You could also use this image: http://en.wikipedia.org/wiki/Image:C-130J_Co_Pilot%27s_Head-up_display.jpg, (which is already in the article), as a reference image for in-depth description.

In this picture [http://www.keo.com/ecat/AT/graphics/hgs-4000-737ng.jpg]
the Overhead Projector Unit can be seen above  the pilots seat and the combiner seen above the glareshield.  
The Combiner is designed to fold up when not in use and to break away without causing injury.

The HUD display seen here [[http://www.rockwellcollins.com/page5680.html]] is a basic display.  
An airspeed tape is shown to the left, with an altitude tape on the right, and a compass rose with
turn/bank/slip-skid indication is shown in the top center. There is also a horizon 
line going across the upper part of the display from the top of the airspeed tape to the top
of the altitude tape.  As the aircraft maneuvers, this line will move with the horizon. 
These are the minimum instruments required by 14 CFR Part 91 to operate
an aircraft{{Fact|date=February 2007}}.''

While the above image shows a night scene, the pilot can set a desired brightness level
 which is automatically maintained during night or day. In more advanced displays, a Flight Path 
symbol is added which shows "where the aircraft is really going" (sum of all energies operating
on the aircraft) as opposed to "where the nose is pointed." {{Fact|date=February 2007}} 
For example, even the nose is pointed up, if the throttles are so that the aircraft 
is loosing energy (descending) the flight path symbol would be "down" relative to the
horizon line.  Advancing the throttles  (adding energy) would cause the flight path symbol 
to rise as the aircraft's speed increases. In this picture the flight path symbol is centered,
slightly below the horizon line, and appears as a set of concentric circles.  One symbol 
is the "bore sight" circle which indicated where the nose is pointed.  
This symbol if fixed on the display.

The section was really interesting and had a ton of useful information, but we would really like to include images in this article, not just link to an image whose author (in this case Rockwell Collins aviation) may have problems with wikipedia doing so.

Thanks for your knowledge on this subject! Keep going! Just remember to clarify the article, and find a suitable image.

John Pouliot 15:46, 24 February 2007 (UTC)

Update

I finished reworking the section that was left on the page, adding wiki links and putting the external links into that section or the commericially available HUD section. Let me know on my talk page if you have any questions! John Pouliot 16:07, 24 February 2007 (UTC)

Commercial HUD's part 2

First, I by no means meant to discourage you from writing expert testimony! Reliable experts (like yourself) are an amazing asset! I'm sorry if I ever put that in doubt. The problem was that to a non-expert, what you wrote -- while obviously knowledgeable and interesting -- would be a bit hard to understand. That's all.

Systems have been approved which allow reduced-visibility takeoffs and landings, and Category IIIc ILS landings[citation needed].

You asked what a citation might be for this. It could be as simple as including a footnote to a link that leads to a website simply about one of these systems.

The practice of linking to outside websites is not at ALL discouraged I don't think. Again, it is probably my fault for giving you that impression, and I am really, truly sorry. There are several ways to link to outside sources, through footnotes or through embedded HTML (ways to do both can be found at Wikpedia How to Cite Sources) or at the bottom in the External Links sections, etc. All of the footnotes already there link to external sites.

I'm so sorry for the affrontery, and again, please please discuss this with me! You are a valuable resource to the community (to which I am a new member as well!) John Pouliot 03:17, 1 March 2007 (UTC)

Update

For example, your link to that particular FAA document was a citation, and it is now formatted into the article as a footnote. It could also have been an embedded HTML link. This, IMHO is the right idea for this article.

Also, I feel like there are places where expansion could made on this article (as you obviously do as well). What else do you know about SVS systems, and for that matter Enhanced Vision Systems?

OK :)

Sorry for leaving this in a nasty state yesterday - I wasn't able to get to wikipedia for several hours and so it was left "unclean." I appreciate your taking the time to clean it up.

I hope I'm doing this time. One question - how do I link to an image in Wikkipedia Commons? Found an interesting picture with lots of talking points at a NASA site (as an aside - NASA has funded several industry studies over the last few years - one of their videos (not sure this is available to the public) is a picture of the NASA B-52 flying between hills, and the camera angle is looking down at the aircraft. The pilot flying was under the hood (no outside view) and was only fly a synthetic "tunnel in the sky" synthetic display. Sometimes I'm amazed at the faith pilots put in the engineering community!) I would assume that if I can find a link on a Govenment website a link would be appropriate? (as opposed to uploading it to some appropriate place?) Brian

Your Updates (3/1/07)

So far, these look really great, especially the added citations! :)

As for images, NASA says on their website that their images are usually not copyrighted, so to me they seem ok, but the fair-use policy on the Wiki is sometimes hard to deal with. I would upload them, and on the image page, make sure to write that NASA does not usually copyright its images.

As for Wikipedia Commons, it says here (http://commons.wikimedia.org/wiki/Commons:Welcome) that everyone is allowed to copy and distribute all the work. So if it's on commons, use it!

After you are done with the civil aircraft applications section, I will go through and copyedit and wikify, so we can have a informative, smooth, well-layed-out article.

'Til then. John Pouliot 00:34, 2 March 2007 (UTC)

SVS pictures

I went ahead and added those two pictures of the SVS sysytem from NASA's site. Hopefully you can use on as a talking point? Or the one on commons? —The preceding unsigned comment was added by John Pouliot (talk • contribs) 01:20, 2 March 2007 (UTC).

Move Discussion

From now on, let's have this discussion on Head-up Display's talk page instead of here. I just added a new section of discussion there. Thanks!John Pouliot 02:53, 5 March 2007 (UTC)

An exciting opportunity to get involved!

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