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YJ-21 speed/velocity mismatch between the ballistic missile and the RV?

Posted: Fri Jul 29, 2022 10:38 am
by nkocevar
So, I noticed what seems to be a discrepancy in the speed/velocity between the ballistic missile booster (DBID#: 4058) and the YJ-21's RV (DBID#: 4059)...

-The YJ-21 ballistic missile booster has a max speed/velocity of 6500 Kts.
-The YJ-21 RV has a max speed/velocity of 10000 Kts, a 3500 Kt difference.

I'm just wondering if this is a DB issue that I should post a ticket on GitHub for, or if this is intentional...

Re: YJ-21 speed/velocity mismatch between the ballistic missile and the RV?

Posted: Fri Jul 29, 2022 8:56 pm
by Gizzmoe
Do those values you mention have a negative impact on the actual in-game performance of the YJ-21 or is it a pure "cosmetical data" within the DB? I have played a little bit around with the YJ-21 and to me, as a non-expert, it appears to be ok in-game.

Re: YJ-21 speed/velocity mismatch between the ballistic missile and the RV?

Posted: Fri Jul 29, 2022 9:14 pm
by SunlitZelkova
nkocevar wrote: Fri Jul 29, 2022 10:38 am So, I noticed what seems to be a discrepancy in the speed/velocity between the ballistic missile booster (DBID#: 4058) and the YJ-21's RV (DBID#: 4059)...

-The YJ-21 ballistic missile booster has a max speed/velocity of 6500 Kts.
-The YJ-21 RV has a max speed/velocity of 10000 Kts, a 3500 Kt difference.

I'm just wondering if this is a DB issue that I should post a ticket on GitHub for, or if this is intentional...
The YJ-21 is a hypersonic glide vehicle. It thus has a very high speed, 10,000 knots as you are aware.

All hypersonic glide vehicles are boosted on standard ballistic missiles before they begin their hypersonic descent, however, and all short range (what the YJ-21 is) ballistic missiles in CMO use a standard speed or 6500 knots.

This is probably because of a lack of data on the maximum speed of ballistic missiles when they cease the powered phase of their flight. In addition, it wouldn’t severely affect gameplay to use a standard value.

So no, there are no errors.