The Kh-38MT may not actually exist

[Danzig_A11]

I have read this mentioned before but what is KH-25MTP?

[ron_23]

@ileaveuptiers

after 10 seconds it should go down to 350-400 m/s as stated as the average missile speed on the brochure

that is not how an average works

[simsimkek]

yeah so it should be bug reported, the missile should have much more drag than it has i guess

[Silversting]

I hope you understood what average speed is.

[ItsGaryy]

IR version of the KH-25MT which is TV guided.

[sudo_su1]

@ileaveuptiers

2 second burn time to mach 2.6
8 second sustain
after 10 seconds it should go down to 350-400 m/s as stated as the average missile speed on the brochure

“Boost” and “Sustain” are just the terminology for the higher thrust shorter burn time and lower thrust longer burn time phases of the motor.

It doesn’t mean you only have speed increase during the 'booster burn" and the speed will not increase during the “sustainer burn”.

[ileaveuptiers]

I understand averages, but it’s not defined and I don’t know if they use different formulas

[ron_23]

there is just one defintion to calculate the average speed of something

you take the total distance traveled and divide it by the time it took to travel that distance

[ileaveuptiers]

Sure if we assume they are using the same formula as written, we can figure out the distance.

The brochure states the average speed is 400m/s at 12000m altitude launched from the plane at 450m/s. The angle of launch is 50 degrees. The maximum speed is mach 2.6 or 892m/s. Should we assume that it takes 2 seconds to reach mach 2.6 with that speed sustained for 8 seconds?

[simsimkek]

40000/749 = 53 seconds…

[ron_23]

the brochure states distance as well
and it says 70km max range

[sudo_su1]

@simsimkek

At max range of 40km its 749 m/s (see edit)

We need to compare it at 70km max range.
But unfortunately in the game its travel distance is capped at 40km. (And StatShark doesn’t allow tweaking those parameters AFAIK)

[simsimkek]

The brochure i used for the launch parameters states a max range of 40km

[ron_23]

that is an older brochure

we have a newer one

[ileaveuptiers]

I totally overlooked that,

Can’t we just average out the max and minimum?

[ron_23]

that wouldnt help us at all

[sudo_su1]

@simsimkek

The brochure i used for the launch parameters states a max range of 40km

It’s possible that the average speed is for a 40km launch.

But it’s also possible that the earlier 40km range figure was understated due to the actual range being classified. (Not unusual for missiles)

Hard to know …

[Silversting]

@ileaveuptiers

KHs just fly at maximum speed instead of average speed all the way to it’s target

Based on your message

The Kh-38 will not fly in the 300-400 m/s range for the entire flight, it is not a cruise missile with a ramjet engine. Average speed is an average value that depends on the maximum launch distance, launch speed, maximum speed, minimum speed.

[simsimkek]

I suspect the difference in wording for “maximum range” and “launch range” between the two brochures probably means the effective range is 40km while the maximum ballistic range is 70km, so the latter range is meaningless when it comes to discussing in game performance

[ron_23]

it could also be the time difference of around 10 years between those brochures