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So, I take this post here, I'll update from your inputs
Basically I started with German DB engines, for the moment mostly DB601 and DB605. Data are mainly from Kurfurst website.
I use PS and KM to fill the Excel ("german unit").
I use PS and Feet to plot graphs (I'm French Airline pilot so PS/Ft fits better for me, plus it would be better for comparison with British / Us engines later, provided I don't screw up with PS and HP ...)
My current questions :
- I can't get a lot of data about DB605AS, ASM, ASC(M) nor "D" series engines. Apart from max rated pwr @ TO and power @ S/C Alt.
- I'm confused with the following graph : the line starting from 1700 PS (1.7 ATA) is obtained with wich conditions ? C3 fuel and W/O MW50 ? If yes does that mean the "extra" 100 hp comes from MW50 charge cooling ?
Kurfürst - DB 601, 603, 605 datasheets - DB 605 AM
- I'm also confused with the following : looks like the numbers doesn't match which "reliable data "(for example the Jumo 213A curve), neither with the charted data on the same page (for example 1500 ps @ 6400 m for the table).
Kurfürst - DB 601, 603, 605 datasheets - DB 605 ASM
Any input, to light my brain, is appreciated
Hi, thanks for both replies.
Snowy, I've been looking to translate german stuff (my wife is german, it helps up to the point it becomes very technical). I wanted to be sure of my "interpretation".
Thx Tomo for the link, as I've stated I really get a lot of information from this thread, unfortunately, it didn't "solve" my 1st and 3rd questions, maybe there's nothing available ...
But I'm still confused with the last graph, I get your "inverted colors" version why the colored lines, but it seems to still don't match with other sources of information.
Thx Tomo for the link, as I've stated I really get a lot of information from this thread, unfortunately, it didn't "solve" my 1st and 3rd questions, maybe there's nothing available ...
But I'm still confused with the last graph, I get your "inverted colors" version why the colored lines, but it seems to still don't match with other sources of information.
What other sources of information are you trying to "match" those graphs to ?
Having worked in Germany Italy and France some technical stuff doesn't translate, English is perhaps the worst for it. Try using a German on line technical dictionary, then google translateHi, thanks for both replies.
Snowy, I've been looking to translate german stuff (my wife is german, it helps up to the point it becomes very technical). I wanted to be sure of my "interpretation".
Thx Tomo for the link, as I've stated I really get a lot of information from this thread, unfortunately, it didn't "solve" my 1st and 3rd questions, maybe there's nothing available ...
But I'm still confused with the last graph, I get your "inverted colors" version with the colored lines, but it seems to still don't match with other sources of information.
For example , charted data and graphic data from here : (the 1500 PS @ 6.4 km).
Kurfürst - DB 601, 603, 605 datasheets - DB 605 ASM
I understand the precautions to take with the numbers, I'm conscious this can't be a "perfect match" everytime. My idea is to try to get similar and reliable values from different sources if possible. In my example, I'm trying to "plot" the ASM curve using charted data + data I get from the graph.
In terms of results I'm only trying to make a sort of database with engines power curves, (and saving the sources for personal interest).
I may also use Excel as a "comparison tool" from one engine to another. Maybe this will be interesting for someone else so I'll share this.
Thanks for your inputs guys.
I'll post up new versions of the file in the first post and update it accordingly
thx again snowy for sharing this about DB605 AS(M) curves. It looks very interesting, makes me thinking a little bit to usual 2 speeds S/C curves with the « smoothing » of the DB engines hydraulic drive
I have also one point to confirm about the two « upper curves », which both implies the use of MW50.
I tried to decipher what implies the terms « optimaler / normaler zuschaltung » to understand what makes the difference.
with help of my German wife, I would translate (in English, I'm French so ...) by « optimal / normal injection system ».
I'm quite sure I read somewhere (but can't find it, maybe it's incorrect) the there were two « MW50 » injection system, the first « retrofit » one which sprayed in the S/C inlet, and a second one (maybe « line fit ») which was more like intake port injection system.
well, this point may be wrong so I'm glad to be educated on this, but if it's right this can be the difference between « optimal » and « normal » curves ?
cheers
Awesome info, thx a lot
I'll ask for your book as birthday's gift
back on your last document, I would say the curves illustrate « steig und kampfleistung » power, could you confirm please ?