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HUD by Cigognes HUD by Cigognes
HUD stands for Head-Up Display, an electronic device that gives the pilot all the needed information without having to bury the eyes inside the cockpit. By that mean, the pilot can track his target with more efficiency.

Picture taken during a 2+2 CAP (Combat Air Patrol), AP (autopilot) selected, 27900 ft altitude, 321 IAS (Indicated Air Speed), Mach 0.81, heading 323°.

Over cloudy France, 2008.

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:iconcaspianseamonster:
CaspianSeaMonster Featured By Owner Sep 1, 2013  Hobbyist General Artist
Indicated airspeed in meters per second I assume?  That's the only way Mach 0.81 makes any sense...
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:iconcigognes:
Cigognes Featured By Owner Sep 2, 2013
IAS is in knots, which differs from the ground speed.
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:iconcaspianseamonster:
CaspianSeaMonster Featured By Owner Sep 2, 2013  Hobbyist General Artist
321 knots should only be around 0.5 Mach though, unless I'm doing my math way wrong.  hmm
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:iconcigognes:
Cigognes Featured By Owner Sep 3, 2013
You're right, but you forgot the pressure, which is weaker the more you climb ;)
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:iconcaspianseamonster:
CaspianSeaMonster Featured By Owner Sep 3, 2013  Hobbyist General Artist
Nope, I used this calculator and plugged in the altitude - it would be more accurate with ambient temperature instead but I'm not going to hazard a guess on that. 321kt (369.4mph) IAS at 27,900ft altitude shows 0.539 Mach.  I know variance in air temperature will change that but I'd be very surprised if it made that much difference; I don't know, maybe it does.  321m/s (718mph) reads 1.048 Mach so that doesn't make sense either.  There could also be something wrong with the calculator but as it's a NASA application I sincerely hope there isn't.  (I'm not accusing you of not knowing what you're talking about, just trying to understand and figure this out.)

I know the ICAO insists on using SI units for everything but altitude, I guess using knots for IAS on the Mirage is a NATO STANAG thing?  I've been told the general HUD layout is standardized and it certainly seems that way (I'm not a military pilot by any stretch of the imagination, I just spend a lot of time in DCS flying the Warthog.)  Also as far as I know all Russian and Soviet aircraft have all their readouts in metric - that for me, combined with the heinous crime against nature that they call an attitude indicator, makes the Su-25T sim pretty much impossible to fly.  :O
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:iconanzac-a1:
Anzac-A1 Featured By Owner Nov 19, 2013
I believe that the 321 is the heading, as the compass at the top is between 320 and 330, about where 321 would be. Also, I think that in the top right-hand corner, it says 27900, which I'm guessing is 27,900 ft.
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:iconcaspianseamonster:
CaspianSeaMonster Featured By Owner Nov 20, 2013  Hobbyist General Artist
The 27900 is the altitude in feet, yes.  I already said that.  The location of the 321 makes sense for the airspeed if the decimal number directly below it is indeed the Mach indicator.  The A-10 HUD is laid out roughly the same way - altitude on the right, airspeed on the left with Mach number directly below it in smaller lettering (Mach number is optional and has to be selected in the IFFCC settings; it isn't normally displayed for probably obvious reasons,) and the magnetic heading is only displayed as a tape, not an actual number.
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:iconmartiansummer:
martiansummer Featured By Owner Sep 29, 2012  Hobbyist Digital Artist
You are one lucky man.
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:iconmyname1z4xs:
myname1z4xs Featured By Owner Nov 2, 2011  Hobbyist Artist
A real HUD, not a screen from Ace Combat :la:
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:iconlongbow986:
LongBow986 Featured By Owner Oct 28, 2011  Hobbyist Photographer
beautiful!!!
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:icongastonnerie:
gastonnerie Featured By Owner Oct 21, 2011
2000-5 sans le HUD holographique ? avec, la photo aurait été un peu plus compliquée à prendre :D

bonne chasse !
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:iconbrenoloestercogo:
BrenoLoesterCogo Featured By Owner Oct 11, 2011  Hobbyist General Artist
Wonderful photo!
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:iconjapphell:
japphell Featured By Owner Oct 8, 2011
that's a clear shot~~ thanks for sharing :D
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:iconmycrophage:
Mycrophage Featured By Owner Oct 6, 2011
Comme Yusu, j'aurais pensé que ce genre de photos serait interdites (après les vidéos du tchad & co...). Enfin cela dit, on n'y voit rien susceptible de compromettre la sécurité intérieure ^^'

1.5G seulement ? l'AP ne tire pas sur le manche 8-)
Par contre à quoi correspond l'indication juste en dessous ?
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:iconcigognes:
Cigognes Featured By Owner Oct 6, 2011
6.6° d'assiette positive par rapport au plan horizontal, ce qui veut dire que l'avion est en très légère montée, virage à gauche. L'AP ramène l'avion vers un point de report pré-calculé, par lequel va passer la paire en visuel à midi.
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:icongastonnerie:
gastonnerie Featured By Owner Oct 21, 2011
Euh... incidence , pas assiette ?
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:iconcigognes:
Cigognes Featured By Owner Oct 21, 2011
Qu'ai-je dit ?... Ah oui, incidence, merci pour la correction.
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:iconmycrophage:
Mycrophage Featured By Owner Oct 9, 2011
Okok, merci pour la précision :)
Je connais pas les subtilités du PA, je ne vole qu'en planeur ^^'
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:iconroberdigiorge:
Roberdigiorge Featured By Owner Oct 3, 2011  Professional Interface Designer
Nice Shot!
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:iconred-umbreon-of-light:
red-umbreon-of-light Featured By Owner Oct 2, 2011  Hobbyist Traditional Artist
I love the jets you can see in the top of the cockpit, giving you the feeling that missiles have been fired. Awesome picture, love how youve balanced the camera and left the plane sideways.
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:iconyusu:
Yusu Featured By Owner Oct 1, 2011
Je dirais même qu'au contraire ça améliore l'image de l'armée de l'air dans un sens :)

Continuez comme ça.

Petite question: vous êtes basé où ?
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:iconcigognes:
Cigognes Featured By Owner Oct 1, 2011
A Luxeuil depuis août 2011.
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:iconyusu:
Yusu Featured By Owner Oct 1, 2011
C'est vraiment une photo exceptionnelle ! J'espère que vous nous donnerez l'occasion de voir d'autres photos tout aussi exceptionnelle.

Je pensais pas que vous aviez le droit de photographier depuis vos chasseurs comme ça, mais c'est vraiment une photo magnifique.

Respectueusement.
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:iconcigognes:
Cigognes Featured By Owner Oct 1, 2011
La hiérarchie se montre souple, du moment que la photo ne porte pas atteinte à l'image de l'Armée de l'Air. D'autre part, le contexte photographique ne pose aucun souci : l'avion était sous pilote automatique et l'étagement avec l'ailier était assez important (de l'ordre du kilomètre). Du coup, le pilote avait le temps de sortir le petit compact et prendre quelques photos, le tout sans aucune prise de risque.
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:iconkloyce:
Kloyce Featured By Owner Oct 1, 2011  Hobbyist General Artist
Hey this is really awesome!
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:icongbrgraphix:
gbrgraphix Featured By Owner Oct 1, 2011  Hobbyist Digital Artist
you mean thats real? no cg, no ps. the hud is just that clear.
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:iconcigognes:
Cigognes Featured By Owner Oct 1, 2011
Yes, it is. The system have in infinity focus that allows the pilot to have the information always clear, was he looking just ahead of the nose or way out on the horizon.
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:iconrenehenckens:
ReneHenckens Featured By Owner Sep 30, 2011  Hobbyist Photographer
Do you have any idea how much I envy you?
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:iconcigognes:
Cigognes Featured By Owner Oct 1, 2011
;)
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:iconsimpiou1:
simpiou1 Featured By Owner Sep 30, 2011  Hobbyist General Artist
i love this pic !
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:iconcrusadier:
Crusadier Featured By Owner Sep 30, 2011
Cool
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