Papi,
Surface evaporation was a big drag reducing thing in the 20's-30's, the British Schneider Trophy winner, the Supermarine S6B used it, as did most of the other nations involved in air races.
Originally the He100 had pure surface evaporation, which meant it had a system that had a spray coolant effect through the engine, the resulting steam was then fed to spaces between the skins of the wings. The huge area meant that steam coolded and condensed back to a liquid and then fed back to the engine. This was so Heinkel did not have to use a drag inducing radiator, but this was only for the speed runs. The He100D (this pre-production version) model had a modified system and introduced a semi retractable radiator in the mid belly. This radiator was used when on the ground and at slow speeds, but was semi-retracted at high speed. A good system but required some 21 pumps(!!) to make the system work, and you have to wonder what would have happened when several pumps were damaged or a wing skin was holed in battle?!
There's not a lot of info about the He100D, and Chris had just modelled the radiator fixed, when he sent me the source file to finish it. I found this little bit of info by chance and modelled the radiator so that it automatically extends/retracts when the undercarriage is down and up, replicating it better.
Huub,
Beautiful tex, really sets it off. Chris does an excellent tex, but that's the next level...
glh,
Thanks for the comment, glad you like it.
Cheers
Shessi
p.s Don't worry, I had already started and nearly finished the He100 V8.......
