Recent content by TempestMKV

Kurfurst - Your resource on Messerschmitt Bf 109 performance

What would happen? IMO,although German fuel was slightly inferior to allied, but B4/C3/MW50 can fulfill Merlin&Griffon's need in WWII.

Soren, could u explain to me why k98k projectile outpeformed Browning 0.5? 0.5BMG, 12.7mm weight=48.6g, BC=1.0 MV=867m/s K98k , 7.92mm. weight=12.8g, BC=0.584 MV= 760m/s At 1000m,.50 is 479m/s, 7.92mm is around 520m/s. So，a lower MV, lighter, lower BC ,7.92mm projectile outperforms a...

In order to calculate the compressor loss, I have to know the supercharger structure, the speed, compressing ratio, air temptarure, density, intercooler area/heat transfer coefficients, the air consumption mass.... Without those I can't bring accurate result, furthermore the test data is...

This is the comparation of Ta152H1/C1 (with MW50)and 21lbs spitfire XIV/21. They all entered WWII before VE day. red line is 21lbs Spitfire XIV; green line is 21lbs spitfire21, btw, the spitfire21 is prototype, so production perhaps a bit slower. Anyway, the Ta152 and late spitfire share same...

Therefore, above 6.8km, the "sonder" curve and "start" curve coincides. Ta152H1 turns on 3rd speed at 8km high, and reaches 3rd FTH at 9.8km, just like Ta152B which has different wings and no MW50. The chart below proves my analysis.

Let's assume that both GM-1 and MW-50 could be switched on simultaneuosly although there are seldom original archives can prove it. The GM1 only support three N2O flow rate, 3kg/min, 6kg/min,9kg/min. If you turn on the least N2O flow rate(3kg/min) at 9.8km, you'll get 1420PS which is...

Gross output=net output+ supercharger cost FTH=full throttle height Unlike Merlin or Griffon, Jumo213E can reach max. engine speed at sea level. Compared with SL and 3rd FTH, the engine's Gross output is same, but 3rd FTH net output is lower. Why? The supercharger eats some output of...

If you can't provide enough boost such as 1.8ata, MW50 is almost useless, and that's why there is no "MW50" curve between 6.8km-9.8k. on the above chart. In order to provide 1.8ata on 9km altitude, engine will have to pay a lot of output in driving supercharger(600HP?700HP?). Then what's...

This picture tells everything. MW50 is completely useless above 6.8km with Jumo213E.

With 1320HP @ 9.8km,Ta152H1 is 35km/h faster than spitfireXIV. With 1700HP @ 9.8km,Ta152H1 is ?km/h faster than spitfireXIV?

I've made a mistake. See this chart, on pink lines, boost is same. It's unwise to achieve high boost(such as 1.8-1.9ata) at 8km-10km because supercharger will eat lots of engine output. So MW50 can NOT give Jumo213E more power than 1340PS between 8km-10km. This issue is very simple...

Then tell me why Exhaust thrust can't help Ta152H1 at seal level? Does Spitfire XIV have no Exhaust thrust? Furthermore, I'll amend my opinion, Let's see this chart. The A, B, C points stand for the three FTH (full throttle height) where pilot push 100% throtle and just get max boost...

This is the output chart of Ta152H1(Jumo213E) and 21lbs spitfire XIV(Griffon65). The pink line is of SpitfireXIV; and red line is supplementary of output with Gm1. There are 3 flow rates of Gm1, so 3 lines; the blue line indicates the Ta152 output if the 3rd speed is broken which sometimes...

.....I am intersted in "Spitfire XIV HF with critical height=30000feet, plus liquid oxygen" which is possible in history.