Question about Pe-2 drag from external bomb loadouts.

[FeuerFliegen]

I have always wondered- the Pe-2 has substantially more loss of top speed due to drag with two 500kg bombs, compared to four 250kg bombs.

I would think it would be nearly the same; if anything, I'd guess that two 500kg bombs would give less drag than four 250kg bombs, simply due to the volume of space they take up.

 

Does anyone know why there would be so much more speed penanality with two 500kg bombs?

[1PL-Husar-1Esk]

More mass worse acceleration and climb, but if mass is the same the  surface and shape is also similar so I think the drag is the same.

Edited December 17, 2023 by 1PL-Husar-1Esk

[FeuerFliegen]

11 hours ago, 1PL-Husar-1Esk said:

More mass worse acceleration and climb, but if mass is the same the  surface and shape is also similar so I think the drag is the same.

 

exactly... that's why I don't understand it.  equal mass, but the two 500kgs have substantially more drag penalty.  If anything, I'd think that the four 250kg bombs would be a slower setup as it appears to have more aerodynamic drag.

 

The speed penalty for the 500kg bombs almost appears as if was for four 500kg bombs (which isn't an option)

[=MERCS=JenkemJunkie]

The attached 250s have a drag value in-game of 0.043 each, and the 500s have a drag value that's over 3 times that at 0.150 each. Seems very strange to me, I don't know why it's like that, but that's how it is.

 

The drag values in general are very head scratching if you compare them to each other game wide. I would guess it's likely due to different people modeling these at different times with different sources, and it all gets funky. Could really do with a clean up and standardization, but don't hold your breathe.

[FeuerFliegen]

2 hours ago, =MERCS=JenkemJunkie said:

The attached 250s have a drag value in-game of 0.043 each, and the 500s have a drag value that's over 3 times that at 0.150 each. Seems very strange to me, I don't know why it's like that, but that's how it is.

 

The drag values in general are very head scratching if you compare them to each other game wide. I would guess it's likely due to different people modeling these at different times with different sources, and it all gets funky. Could really do with a clean up and standardization, but don't hold your breathe.

 

Thanks for the specific drag figures.  There's no way that's accurate to real life.