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    F-16C Speed Issue

    Ummmmm it seems that currently the F-16C in DCS is over-performing in terms of low altitude max speed, as shown in the attached pictures, currently a F-16C in clean configuration can reach M1.6 in level flight at 10000ft, when the NATOPS chart states that at this altitude the limit speed is M1.4
    Attached Files
    Last edited 10-18-2020, 03:13 AM. Reason: Removing the NATOPS diagram

    #2
    Originally posted by Schwerter_105 View Post
    Ummmmm it seems that currently the F-16C in DCS is over-performing in terms of low altitude max speed, as shown in the attached pictures, currently a F-16C in clean configuration can reach M1.6 in level flight at 10000ft, when the NATOPS chart states that at this altitude the limit speed is M1.4
    See: https://forums.eagle.ru/showthread.php?t=285531
    800 knots CAS is the tested limit on the canopy and the engines will do more, as stated in Joe Bill Dryden's Semper Viper article, "Don't Stretch the Limits" is one answer, it could also be another physical limit placed on the engine etc for normal operation.

    Also you will probably have to remove the diagram, it's probably against forum rules.

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    Last edited 10-17-2020, 07:32 PM.
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      #3
      The viper modeled by ED doesn’t have the F100- PW-229 as listed in the diagram.
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        #4
        Originally posted by Snake122 View Post
        See: https://forums.eagle.ru/showthread.php?t=285531
        800 knots CAS is the tested limit on the canopy and the engines will do more, as stated in Joe Bill Dryden's Semper Viper article, "Don't Stretch the Limits" is one answer, it could also be another physical limit placed on the engine etc for normal operation.

        Also you will probably have to remove the diagram, it's probably against forum rules.

        Sent from my LM-G850 using Tapatalk
        Thanks for the heads up, I removed the diagram. I also have read about the 800 knot test, but shouldn’t the vipers in service have some sort of safety mechanism that limits the max speed? (I’m not sure, just a personal thought)
        Last edited 10-18-2020, 03:23 AM.

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          #5
          Originally posted by =Panther= View Post
          The viper modeled by ED doesn’t have the F100- PW-229 as listed in the diagram.
          Ahh yeah I didn’t notice that, thanks. but I think according to the data sheets from GE and PW the two engines have very similar thrust, so their low-altitude performance shouldn’t have that much of a difference.

          P.S. I believe the F100 has a smaller bypass ratio which would in theory make its high speed performance better than the F110 which we have in-game?

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            #6
            Originally posted by Schwerter_105 View Post
            but doesn’t the vipers in service have some sort of safety mechanism that limits the max speed? (I’m not sure, just a personal thought)
            Yeah, it's called a fighter pilot.

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              #7
              Originally posted by randomTOTEN View Post
              Yeah, it's called a fighter pilot.
              Sorry I clicked twiceD: , this has been edited

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                #8
                Originally posted by randomTOTEN View Post
                Yeah, it's called a fighter pilot.
                Fair enough

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                  #9
                  no body talks about that over-performing and over speed of F-16C because everyone is happy with that. He can escape so easy. Imagine, even AMRAM 120C can't catch this aircraft. On the other hand the pour F/A-18C is so draggy to a point where you can't even do A2A

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                    #10
                    Originally posted by AEOLUS#3 View Post
                    no body talks about that over-performing and over speed of F-16C because everyone is happy with that. He can escape so easy. Imagine, even AMRAM 120C can't catch this aircraft. On the other hand the pour F/A-18C is so draggy to a point where you can't even do A2A
                    Because both are a mostly accurate representation of the real FMs. A clean Viper at 1.2M at sea level is still accelerating at .25G per the HAF -1. With 6AAMs and a centerline pylon it just reaches 0 accel at 1.2M at sea level. Clean F/A-18Cs struggle to break 1.05 at SL. Their straight wing works against them when supersonic.

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                      #11
                      Originally posted by AEOLUS#3 View Post
                      no body talks about that over-performing and over speed of F-16C because everyone is happy with that. He can escape so easy. Imagine, even AMRAM 120C can't catch this aircraft. On the other hand the pour F/A-18C is so draggy to a point where you can't even do A2A

                      Well that is really just an F/A-18C design flaw, it is definitely slower/less agile then a Viper, and once loaded it only gets worse
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                        #12
                        Originally posted by FoxOne007 View Post

                        Well that is really just an F/A-18C design flaw, it is definitely slower/less agile then a Viper, and once loaded it only gets worse
                        I think design compromise is more apt

                        (Kind of like those stubby barely lift producing wings and fragile undercarriage on the Viper)

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                          #13
                          Originally posted by Schwerter_105 View Post
                          the NATOPS chart states that at this altitude the limit speed is M1.4
                          To be a pedantic nit: there's no such thing as NATOPS for the Viper

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