Late in 2007 Juergen Meier joined the team. Juergen is not a family member
he has only the same name. Jueregn worked formally at the Flugwerk Company and attended the Flugwerk customers, also he was involved in the production of those kits. In fact he knows every single screw and rivet at this ship. At this second Jueregn was and is responsible for those Flugwerk planes at the MeierMotors shop. And I tell you, the WkNr002 is his personal baby and meanwhile a big friend of the Meier-brothers and, glad I am, a friend of mine. From an empolyee to deep friendship, these are also warbirdstories.
They choose the Asch82T as powerhouse. This Asch is a 14cylinder radialengine, 42 litres cubic capacity. Its a transporter engine and was used in the well known Iljushin 14 with a 4-blade-propeller. The engine has about 1.900 hp. This engine was adapted at the fuselage. It was planned by Flugwerk to use this engine with a three-bladed-propeller. The propellerhub was constructed by Flugwerk, the blades were delivered from MT-propellers. Additional to this equipment the Meier-brothers bought an original matching Il-14 4-blader and gave this propeller to Hoffmann-propellers for ovehauling. The prop was shortened and got a new paint. Achim and Elmar thought that it was a good idea to manage the testflights with a matching propeller which served thousands of hours at this engine, not with a new constructed setup.
The new oilsystem was developped by MeierMotors. The "heart" of that new system is a 126litres oiltank, placed in front of the windshield.
The next point was the oil-cooling-sytem.
At first a bit history :
ss you know, the wartime Fw190 had a special oilcooling system with the socalled "Ringkühler" (ringradiator), the "Panzerring" or "Nasenspaltring" ("armoured ring" or "nose-gap-cowlring" in front of the cowling) and of course the axial-fan. The BMW was an aircooled engine and the fan was attached to a gearbox. The fan rotated about three times faster than the propeller. The fan produced an "overpressure" (dont know the right English term) in the cowling. This pressurized air was at first importent for the compressor of the engine, and second to cool down the oiltemperature while pressing fresh air through the ringradiator. To regulate the temperature in the cowling, the socalled "Panzerring" (armoured ring) was able to sweep about 10centimeters up and forward. Between "Panzerring/nasenspaltring" and cowling the hot air had the chance to leave the cowling through this gap. The radiators were placed in the cowling, as a ring-radiator. With that "Nasenspaltring" or "Panzerring" the temperature of the oil and of course of the cylinderheads were regulated. Tricky construction.
In fact, the ASch82T does not have any gearbox for an axial-fan, so its no use to use an axial-fan to cool down engine and oil. If the fan is not attached on a gearbox, is turns with the same rotations per minute as the propeller. Worst case, this can "block" the airflow in the cowling and you can have big temperature problems. The fan must (!!) rotate faster than the propeller. No fan, no pressure in the cowling, will say temperature-problems. Flugwerk used a radiator under the gun-hood to cool down the oil. MeierMotors went the other way and placed two big radiators in the wing of the aircraft and replaced the "gun-hood-radiator" by a big oiltank as I told above, and it works perfect.
here you can see the intakes in the leading edge
and here the outlet on the right wing
Within this optimize-efforts, a new cowling and cowl-ring was constructed, reinforced and optimized airflowsystem. Another thing was the exhaust-system. same procedure, new contruction to optimize the airflow out of the enginecompartiment. MeierMotors choose another exhaust shape, the used oval exhauststacks instead of the round ones that Flugwerk used. More place = better airflow. Simple but theses are the small puzzlestones for a perfect aircraft. Btw, the original Fw190 had also oval exhauststacks......
here you can see the original Flugwerk-construction at the F-AZZJ, WkNr 990913
The combination fuselage/engine is not the same as in the original Focke Wulf Fw190, so the conversion was lead through according to JAR-23 procedure. As example, the "airflowspar" (dont know the exact english word, sry) was made of high-grade steel as it was assembled at the Iljushin 14. Lot of extra work, but Jerry wanted the best solution, the optimum.
Febraury 2010
Thats it for today
.... to be continued .... not so easy in a foreign language
_________________
Regards from Germany
Matthias Dorst
(webmaster MeierMotors GmbH/ EDTG)
http://www.meiermotors.com