Liquid Rocket Engine Component "Turbopump", at the end of WWⅡ

cults3d

◆Related URLs◆ [Engine] https://cults3d.com/en/3d-model/tool/liquid-rocket-engine-assembly-at-the-end-of-ww [Combustion Chamber] https://cults3d.com/en/3d-model/tool/liquid-rocket-engine-component-combustion-chamber-at-the-end-of-ww [Injection Nozzle] https://cults3d.com/en/3d-model/tool/liquid-rocket-engine-component-injection-nozzle-at-the-end-of-ww [Metering Unit] https://cults3d.com/en/3d-model/tool/liquid-rocket-engine-component-metering-unit-at-the-end-of-ww [Steam Generator] https://cults3d.com/en/3d-model/tool/liquid-rocket-engine-component-steam-generator-at-the-end-of-ww [Steam Control Valve] https://cults3d.com/en/3d-model/tool/liquid-rocket-engine-component-steam-control-valve-at-the-end-of-ww ★At the end of WWII, the only manned tailless fighter equipped with a liquid rocket engine was developed and produced in Germany (Me163), and remodeled and prototyped in Japan (秋水). In Japan, the war ended shortly after the failure of the first flight, and it ended incompletely. The engine uses the propellant (below) that self-ignites by mixing fuel and oxidizer. 　　・Fuel(C-Stoff, 乙液: "Hydrazine (30%) + Methanol (57%) + Water (13%)", 　　・Oxidizing agent(T-Stoff, 甲液): "80% hydrogen peroxide solution" 　Both were dangerous chemical that were difficult to handle because they were powerful drugs. The engine names are known as HWK109-509A (Germany), 特呂二号(Japan). The main components are 　[A] Power unit (Turbopump, Gearbox, Starter), 　[B] Combustion Chamber (Injector, Combustion Nozzle, Cooling Device), 　[C] Metering Device, [D] Steam Generator, [E] PressureRegulator, etc. This time, I made a functional cutaway teaching model for “[A] Power Unit” with reference to books and public information on the Internet. A. Features of this model 　① Rotating Group: single shaft and two bearings 　② Inducer + impeller: Fuel Pump and Oxidizer Pump 　③ Steam-driven Turbine 　④ Gearbox for start-up and RPM Measuring Device (DC motor is used for starter) 　⑤ Color identification (Light Green: Fuel, Yellow: Oxidizer, light blue: Steam) 　The following structure has been omitted. 　　　Grease-up ports, Seal drain ports B. Assembly Manual (PDF format, total 12 pages) The detail assembly manual including "Parts-List", "After printing treatment" and "Assembly procedure" are prepared based on "Standard Skill (Filing, Drilling, Tapping and painting)". Finishing of gear teeth is very important to get smooth rotation. C. Purchase Parts Information; 　1. Metal Bearings are used. (6901ZZ, 6900ZZ) 　2. Aluminum Pipes 　　φ6, 7 - See Parts List 　3. Screws 　　Micro screws M1.4x3.5L & M1.4x6L - Direct screw-in to 1 mm dia hole (No nut) 　　　But if you have the M1.4 Tap, it will be very useful. 　　Screws M2 x ** -, M3 x ** - See Parts List 　4. DC Motor is optional D. STL file 　　Total STL files are 40 items including the stand and tools. 　　“ws” of last 2 digits of file name means “With Support” special designed. E. Total Net Print Time: Approx. 59 HR 　- (Estimated as case of PLA, 0.4mm Nozzle, 0.2mm Layer Height, 40% infill and No raft and support) 　　Note: When at actual print, each parameter may be adjusted by your experience. F. Printing settings 　　Raft, Support, Layer Height, Infill: Depending on your experience. 　　My models were printed by "idbox" using with 0.4 nozzle, 1.75 PLA. [Update] 2022.05.15 - Related URLs added I do hope your success!!