Aces High Bulletin Board

General Forums => Aircraft and Vehicles => Topic started by: Charge on November 10, 2006, 07:18:29 AM

Title: Bf110C4/B Speed?
Post by: Charge on November 10, 2006, 07:18:29 AM

There was a discussion of what variant of 110 we have now.

It is a rather rare version with N(P) engines which have better altitude perfomance than the standard B1(Ba) engines.

155 produced of which 20 with better N(P)engines.


110 engines:
 
  * DB601Aa

    Up to 1,175 PS (865 kW) at sea-level at 2,500 rpm, up to 1,100 PS (809 kW) at 2,400 rpm and 3.7 km altitude, B4 fuel

    * DB601B-1/Ba

    Same as DB601A-1/Aa for use in Messerschmitt Bf 110 and/or bomber aircraft (different prop/engine ratio, 1:1.88 instead of 1:1.55)

    * DB601N

    Up to 1,175 PS (864 kW) at sea-level and at 4.9 km altitude with 2,600 rpm, C3 fuel

    Up to 1,270 PS (934 kW) at 2.1 km altitude with 2,600 rpm

    * DB601P

    Same as DB601N for use in Messerschmitt Bf 110 and/or bomber aircraft (different prop/engine ratio, 1:1.88 instead of 1:1.55)

I have no idea what kind of speed difference there is between Ba and P engined 110s. The critical altitude of our 110 is at 20k, so why does the data state that the best power is at 2.1km altitude (6900ft)? It still gives 1,175 PS at 16k so the speed line in lower altitudes in chart shouldn't be straight?

The most common speed for 110 given in various sources state 560kph/348mph. Which engine gives this speed if this is the the most quoted speed? Ba?

Our 109E4 has the A engine?

-C+

Title: Re: Bf110C4/B Speed?
Post by: gripen on November 10, 2006, 07:58:50 AM

Quote

Originally posted by Charge

I have no idea what kind of speed difference there is between Ba and P engined 110s. The critical altitude of our 110 is at 20k, so why does the data state that the best power is at 2.1km altitude (6900ft)? It still gives 1,175 PS at 16k so the speed line in lower altitudes in chart shouldn't be straight?

Up to 2100m the supercharger works as a constant speed unit (max slip) so therefore power curve peaks there. Above that altitude hydraulic coupling increase speed of the super charger until FTH. The power values seem to ok as well as the climb but the speed seem to a bit unlogical.

gripen

Title: Bf110C4/B Speed?
Post by: Bruno on November 17, 2006, 11:40:10 AM

Bf 110 with DB601N engines (from LEMB) (http://www.luftwaffe-experten.org/forums/index.php?showtopic=2755)

Maybe of some help...