Supercharged
Airman
Quite intersting graph, 3 speed supercharger with full throttle height of just 5400 m (17.717ft) ?Graphs that go with the above tables:
Never read about a 3 speed 222 .....
Terminology and engine data
- Thread starter sibboh
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Never read about a 3 speed 222 .....
Is there anything I can help you with?
Supercharged
Airman
Would be nice if you can provide more info about this early Jumo 222 configuration ....
Because all variants i ever read about were 2 speeds
I don't have much more to offer, bar the chart and the table posted.
Okay.
Fascinating stuff, thanks Tomo. First time i saw speed/climb curves comparison for Bf-109G/FW-190A. Also good to see ATA values for various allied engines so i at least don't have to try to figure it out! Am i just missing it or there is no way to download the above files?
Here is another set, but for the 109F vs. 190A; note that 190A speed at Notleistung is not that easy to discern on the graph.
Indeed.
I'd also be a bit cautious, since German data can differ from the Western data somethimes, eg. they give to the Merlin 20 series a much better altitude performance than it was really so.
Perhaps this might be of use to you: link
Not for amateurs like me
Simon Thomas
Senior Airman
Engines for British Aircraft
Summary of New Regulations about to be Issued for Type Approval and Acceptance Tests - 1930
Summary of New Regulations about to be Issued for Type Approval and Acceptance Tests - 1930
GregP
Major
For those of you who might be interested, here is an Excel file to convert among boost units. Some are absolute pressure and some are gauge pressure. In practice, you don't really have to convert very often. Any aircraft you fly HAS a boost or manifold pressure gauge (or readout) and the numbers you SHOULD use are in the pilot's manual. The only time you really convert is if you CHANGE the manifold pressure gauge for one using another unit of measure. For instance, converting a WWII Japanese Zero to US instruments might involve going from mm H20 or mm Hg to in Hg. Both are absolute pressure but use different units of measure.
Oh yeah, if you put in the altitude (in feet) in item 1), you get standard conditions for that altitude in item 2). Item 3 is boost. Input the boost in coral-colored border and the units on that row adjust for your input.
Cheers!
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Simon Thomas
Senior Airman
This report was used to normalise aeroplane and engine performance to standard conditions.
It is based on R.A.E Report No. A.A.E.E./Res./170, 22nd November, 1942, revised January, 1948.
It is based on R.A.E Report No. A.A.E.E./Res./170, 22nd November, 1942, revised January, 1948.
