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Incorrect unguided rockets type


some1

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IIRC with the F-5E release, two distinct types of unguided rockets were added to DCS:

 

The old FFAR rockets: https://en.wikipedia.org/wiki/Folding-Fin_Aerial_Rocket

The new HYDRA rockets: https://en.wikipedia.org/wiki/Hydra_70

 

In DCS they look the same, but the FFAR's have much worse accuracy, and it shows. It seems that in the Harrier we can only select FFAR's, which is pretty weird, as they were replaced by HYDRA's long time ago, so we should have those instead of the Vietnam era FFAR's.

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Hi some1,

 

 

We have both the Hydra 70 and FFAR rockets for the Harrier. Hydras can only be carried with LAU-68 pods (7 rockets) while the FFAR can be carried with either LAU-3 (19 rockets per pod) or LAU-68 (7 rockets per pod).

 

 

 

Cheers.

 

Interesting, is that intentional, or just an omission?

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I never knew FFAR and Hydra were different.

 

I'm not sure, in DCS for the F-5E, 2.75" seems to have been used to identify the Hydra (Mk66 motor) and FFAR perhaps the older Mk4/Mk40 motors or the difference between Mk66 Mod 2/3 and Mk66 Mod 4 but I haven't looked at DCS's data files to see if there's a real difference.

 

attachment.php?attachmentid=168571&d=1504438383

 

AFAIK IRL earlier launchers (up to LAU-61B/A and -68C/A) could only be used with the older MK 4/MK 40 motors but there's nothing in the AV-8B tactical manual to suggest the USMC don't use FFAR Mk 66 Mod 2 i.e. the Hydra (with modern LAU-61C/A and -68D/A launchers).

 

attachment.php?attachmentid=188486&stc=1&d=1529994345

 

As can be seen there is a discrepancy between what is available for triple mounted pods (i.e. 3x LAU-68 ) and single pods (i.e. 1x LAU-68/LAU-3).

 

 

Edit: Checking a 350 KTAS AV8B @ 3600 ft MSL in Tacview:

 

• LAU-68 *1 = FFAR Mk1 HE reach ~1230 KTAS @ 3600 ft = approx 2100 fps which is close to the Mk 40 Motor, 1965 fps burnout velocity

 

• LAU-68 *3 = HYDRA 70 M151 reach ~1800 KTAS @ 3600 ft = approx 3000 fps which is higher than the Mk 66 Motor Mod 1, 2425 fps burnout velocity but may be due to the launch platform's 350 KTAS or different motor specs.

 

Clearly there is a difference between FFAR and 2.75" rocket performance in DCS

 

Note: The US Army expected Mk 40 Rocket Motor training inventories to be expired by 1993, IMHO it seems unlikely the USMC was still using them on the AV-8B N/A modelled in DCS (but not impossible as the AV-8B N/A was first delivered to the USMC in September 1989).

423723334_AV8B_FFAR_and_2_75_Rockets_DCS_2_5_2_18736Screen_180626_064613.jpg.eb9fec9b015edaa40eb82d8173309ac8.jpg


Edited by Ramsay
Additional 2.75 and FFAR rocket testing in 2.5.2.18736

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Hydras can only be carried with LAU-68 pods (7 rockets) ...

Although true for smoke, illumination, etc. it's not true for HE, HEAT or WP warheads.

 

ITERs (BRU-42/A)

 

HE, HEAT and WP Hydras can only be loaded if the LAU-68's are on triple mounts i.e. 3x7 = 21 rockets

 

If the LAU-68 is mounted singularly (BRU-36) it can only be loaded with the older FFAR HE, HEAT and WP rockets in DCS.

 

AFAIK this is not a RL limitation.

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  • 3 months later...

I just thought about this topic today and did some testing. I can tell the OP at least for the Mk5 vs Mk 151 rocket there is a NIGHT AND DAY difference in accuracy. The Mk151 blows the older FFAR Mk5 out of the water. So there is that.

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  • 4 months later...

Of course not.

 

I also posted a bug related to this in the bug section, but no response there either.

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  • 1 year later...
Of course not.

 

I also posted a bug related to this in the bug section, but no response there either.

 

Can you post the link to the original report, so I add it to the community bug tracker.

Thanks

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On the other hand, I always pack the older FFAR rockets. Two reasons. One, you can set the salvo to empty the entire tube faster :) Two, the pod has it’s front cover modeled. Still very much seen on modern Harriers. Flying around with Hydra pods without a front cover looks ugly (and should maybe create more drag aswell)

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