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Marks On The Eurofighter - Why?  
User currently offlineMr Spaceman From Canada, joined Mar 2001, 2787 posts, RR: 8
Posted (12 years 3 months 2 weeks 5 days 14 hours ago) and read 4264 times:

Hi guys.

I you look at the side of the air intake on the Eurofighter EF-2000 Typoon in the photo below you'll see many black & white marks that have numbers beside them. As you can see, these marks are scattered all around in no particular order of arangement.

Does anyone know what these marks are for, and why they're scrambled around like they are?

They look like they're marking the location of bullet holes in the order that the Typoon was hit. I didn't know the EF-2000 had seen action!  Laugh out loud

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Photo © Peter Unmuth - VAP

PS, if you check, you'll see that the photographer would like to know the answer to this question too. Big grin

Chris  Smile

"Just a minute while I re-invent myself"
5 replies: All unread, jump to last
User currently offlineLMP737 From United States of America, joined May 2002, 5065 posts, RR: 16
Reply 1, posted (12 years 3 months 2 weeks 5 days 12 hours ago) and read 4142 times:

If I'm not mistaken those are reference points for taking photos of the plane in flight. There are pictures of the F/A-18E/F with the same marks.

Never take financial advice from co-workers.
User currently offlineSaintsman From United Kingdom, joined Mar 2002, 2065 posts, RR: 2
Reply 2, posted (12 years 3 months 2 weeks 5 days 6 hours ago) and read 3958 times:

Remember that the aircraft shown is a development aircraft. All sorts of parameters will need to be recorded. Those shown are datum points, unfortunately though I have no idea what they will be measuring.

User currently offlineContact_tower From Norway, joined Sep 2001, 536 posts, RR: 1
Reply 3, posted (12 years 3 months 2 weeks 5 days 3 hours ago) and read 3941 times:

This is one of the aircraft used in the air to air weapons trials if I'm not mistaken. The datum marks are probably for measuring the seperation parameters.

User currently offlineMr Spaceman From Canada, joined Mar 2001, 2787 posts, RR: 8
Reply 4, posted (12 years 3 months 2 weeks 4 days 15 hours ago) and read 3889 times:

Hi guys.

Thanks for your answers.

Ok, so if these are datum marks because the fighter is still under development, do you think it's possible that they're measuring different weight & balance parameters based on what type of ordanance it's carrying (different weights) and what weapons stations they're located on (different balance), as well as external fuel tanks, etc?

Chris  Smile

"Just a minute while I re-invent myself"
User currently offlineFredT From United Kingdom, joined Feb 2002, 2185 posts, RR: 26
Reply 5, posted (12 years 3 months 2 weeks 2 days 23 hours ago) and read 3871 times:

Having some relevant experience, I can confirm that those marks are visual reference points for, among other things, separation trials. You’ll find’em plastered all over the stores to be released as well. It is harder than you’d think tracing the path of the released stores relative to ground and aircraft, as well as the path of the aircraft, with sufficient accuracy. That’s nothing I’m personally involved in though, so don’t ask.

Getting new stores certified is not something to be taken lightly.

Setting out to measure weight and balance visually would be a very interesting way of doing things...


I thought I was doing good trying to avoid those airport hotels... and look at me now.
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