Hansa-Brandenburg W18

Gitter · 6 April 2009, 01:18 AM

Does anyone know what the levelspeed performance of this flying-boat at high is?one source (P.Schupita) stated it is 175km/h presumable at see level.For a 230hp engine it seems too little in my opinion.

YavorD · 6 April 2009, 07:55 AM

Sea level dash speed of the Hansa Brandenburg W.18 flying boat with 150 hp Benz Bz.III engine was reported to be 160 km/h (Kroschel und Stützer, Die deutschen Militärflugzeuge 1910-1918). This book is quite reliable source of information.
Regards,
Yavor

Gitter · 6 April 2009, 03:14 PM

thank you,Yavor,but I am refering to the austro-hungrya flyingboat-oneseat-fighter flown by Banfield.it is the successor of the better known hansa-brandenburg "CC".My mistake that I don`t explain this better.nice when you find something.Gitter

YavorD · 6 April 2009, 03:53 PM

Brandenburg CC is described in the same book as a bit smaller and lighter with a maximum speed of 175 km/h at sea level (again Bz.III engine).
Wing area was 26.5 sq.m (CC) vs. 34.38 sq.m (W 18).

Data from Schupita:

Austro-Daimler 185 P.S. and Hiero 160/200 P.S. for A12/24 (CC); 165-179 km/h.
Hiero 200 P.S. for A25/48 (CC); 170-179 km/h.
Hiero 200/230 P.S. for A50/96 (W 18); 163-175 km/h.

Wing span 9.3/8.47 m (CC) vs. 10.7/10.3 m (W 18).
All the data are quite consistent for all the flying boats. I do not expect too much speed increase with aditional power. About 10 km/h is a reasonable value. Improved take-off run, rate of climb and ceiling should be expected too.
Even a fighter aeroplane with Hiero 200/230 P.S. was able to achieve only about 190 to 200 km/h.
Regards,
Yavor

Gitter · 7 April 2009, 03:34 AM

thank you.seemingly P.Schupita is the only accessible source about this little known theme.Gitter