[gurps] MiG-21 in VE2

[pomphisandpristine at t-online.de]

I tried to do the MiG-21 in VE2, but end up with lots of empty volume.
Now I wonder whether I made a mistake, or whether the air intake may
account for so much volume, or what else goes on.
I started with a wing area of 248 sf, aSpeed of 1,385 mph and thrust of
15,700 lb. From thrust and aSpeed I got a drag of 61-62. As it´s
supersonic it must have at least Superior Streamlining, so the body has
about 367 sf, which means 478 cf. But I don´t get more than about 110 cf
for components, plus maybe 120 cf for internal fuel tanks. I used a
Cramped Crewstation, but even if I go to Roomy that doesn´t help enough.
Besides, I believe that would be wrong.
Any ideas ?