Argus As 10

The Argus As 10 is an historic aircraft engine of the Argus Motoren Gesellschaft from the 1930s.

Construction

The Ace 10 is a hanging ( crankshaft above) eight-cylinder V-engine with 90 ° bank angle. The crankcase is made of electric iron. The quadruple offset crankshaft is mounted five times, two connecting rods engage into a crank pin. Since the right and left cylinder bank are balanced, come each crankpin a Gabelpleuel and a cross into the fork Einzelpleuel used. The flasks were manufactured in series production in gravity die casting and carry three compression rings and one oil scraper ring. The cylinder heads with an intake and exhaust valve per cylinder made ​​of cast aluminum.

The hanging valves are operated by a central, five-bearing camshaft via tappets, pushrods, rocker arms and roller bearings. The camshaft is driven by spur gears. The valve train is fully enclosed and designed oil-tight.

As carburetor two back airworthy SUM are built 729a or 730a. The dry sump lubrication circulation is with a pressure pump and two scavenge pumps equipped ( in the cylinder heads ) and can be extended for back airworthiness to an oil pump. For three oil cleaning coarse filter and a gap filters are provided.

The airplane usual Doppelzündanlage with two magnetos and two-stage electric adjustment of the ignition came from Bosch. To start the ignition is turned to " late" ( after overcoming the ignition top dead center ), which in case of backfiring prevents flashback of the engine and can start the engine better. After start-up is immediately switched to pre-ignition.

Let the engine is either a manual starting device ( hand crank ) or a compressed air starting system. Optionally, a Bosch starter was available for a 24 -V DC electrical system.

Today's meaning

Currently, only a very small number of Argus AS -10 engines are in operation. It may well be less than ten pieces worldwide, three of which are used in the still flying the German Messerschmitt Bf 108 and two in airworthy Fieseler Storch. How many store potentially restoration compliant engines in museums or in private ownership, can not be determined. The few remaining vintage aircraft with an original Argus AS- 10 engine are still occasionally shown on airshows.

Specifications As 10 C

• V8 - cylinder -mounted, 90 ° cylinder angle, Otto four-stroke, air-cooled
• Compression ratio 6.9:1
• Bore × stroke: 120 mm × 140 mm
• Displacement: 12,667 cc
• Home Power: (5 min) 240 hp (176 kW) at a speed of 2000 rpm
• Emergency Power: (30 min) 220 hp (162 kW) at a speed of 1940/min
• Travel Power: 200 hp (147 kW) at a speed of 1880/min
• Cylinder Power: 30 hp
• Displacement Power: 18.95 hp / l
• Power to weight ratio: 0.89 kg / hp
• Piston load: 0,265 PS / cm ³
• Installed weight: 232 kg
• Fuel consumption gasoline ( min. 78 octane ) in cruise flight: about 60 liters / hour
• Highest air screw diameter: 2300 mm
• Firing order: 1-5-4-8-7-2-6-3
• Of rotation of the crankshaft: right
• Gear reducer: no
• Maximum cylinder temperature: 285 ° C
• Idle speed: 350/min
• Limiting speed for a minute throttled swoop: 2600 rpm

Specifications As 10 E

• V8 - cylinder -mounted, 90 ° cylinder angle, Otto four-stroke, air-cooled
• Compression ratio 6.9:1
• Bore × stroke: 120 mm × 140 mm
• Displacement: 12,667 cc
• Maximum power: (1 min) 270 (198 kW) hp at an engine speed of 2100 rpm
• Start Power: (5 min) 240 hp (176 kW) at a speed of 2000 rpm
• Emergency Power: (30 min) 220 hp (162 kW) at a speed of 1940/min
• Travel Power: 200 hp (147 kW) at a speed of 1880/min
• Installed weight: 232 kg
• Fuel consumption gasoline ( min. 78 octane ) in cruise flight: about 60 liters / hour
• Highest air screw diameter: 2300 mm

The performance improvement of the e- version compared to the C version is achieved by a larger air passage cross section, together with a larger jetting in the carbs.

Technical data of the As 10 C in detail

• Installation dimensions: Length gr ( without hub ): 1105 mm
• Width, gr: 880 mm
• Height, gr: 718 mm

• Fuel: Octane: at least 78

• Lubricant: Summer: AeroShell heavy / Stanavo 120 / Green Ring
• Winter: AeroShell heavy / Stanavo 100 / Rotring
• Lubricant content: 3.5 l
• Inlet temperature: 85 ° C
• Outlet temperature: 97 ° C
• Heat dissipation 2500 kcal / h

• Weights: Dry Weight: 213 kg
• Installed weight: 232 kg

• Gravity of the engine: behind the propeller trailing edge: 545 mm
• Under crankshaft center: 128 mm

• Lubrication: Dry sump forced lubrication a pressure pump
• Two suction pumps in one housing
• Three Siebgrobfilter
• A gap - fine filter

• Starter: kickback safe, automatically engaging Argus - hand rotary device
• Compressed air 20 bar or electrical Bosch Starter cranking

• Crankcase: five parts
• Of annealed cast iron electric
• Specially trained in bending and torsion-proof by double bearing walls

• Crankshaft: four times cranked, with bolted counterweights
• Forged from tough tempered special steel in die and machined on all sides
• Five crankshaft bearing of lead bronze in steel shells

• Connecting rod: Fork and Mittelpleuelstangen with H - cross-section
• Forged from tough tempered special steel in die and machined on all sides
• Connecting rod bearing of lead bronze in steel shells

• Piston: cast from special aluminum alloy mold
• Three piston rings
• A Schmierstoffabstreifring
• -floating piston pins

• Cylinder: Forged liners made of hard tempered special steel in the die
• Cast cylinder heads made of a heat-resistant aluminum alloy
• Exhaust valves made ​​of special steel
• Intake valves, valve guides and seats made ​​of bronze spark plugs

• Control: oil-tight encapsulated bumper control
• Roller-bearing rocker arms
• Drive from the five-bearing in the crankcase camshaft
• An intake and an exhaust valve per cylinder,
• Valve stems hardened by nitriding
• Auslassventilträger with hardfacing

• Carburetor: two SUM carburettor
• Model 729 and 730 with fuel control and inverted flight facility
• Gemischvorwärmung by gases

• Fuel delivery: JUMO a mechanical fuel pump double (size 2) with automatic pressure control

• Ignition: two Bosch magnetos with electric two-stage adjustment of the ignition and snap coupling
• Two spark plugs per cylinder, thread M12 × 1.25
• Screening of the entire ignition system

• Cooling: Air cooling with special cooling air flow
• Flow of cooling air through the partly walled crankcase through cooling air ducts below the crankshaft bearing shells

• Propeller hub: Rupp Anflanschnabe for fixed pitch propeller or type-specific hub for adjustable propeller

• Auxiliary drives: two free drives with flange on the rear cover for any cultivation of: power Generator
• MG- control
• Inverted flight lubricant pump
• Oil or air compressor