The Sabre which was fitted in Hawker Typhoon was the most numbered cylinders piston engine I have known. This cause some question:
1) Are there any piston engine contains more cylinders?
2) The more output power each cylinder provides, the better engine it is, but precondition here is the capability of each cylinder is not enlarged.
So the Sabre works with 24 cylinders! Supposedly, they are quite small cylinders compare to other cotemporaneous comparably engine, am I right?
3) The more cylinders the more power the engine gives, it's true but you can not pile up cylinders like wheat because it will bring too many heat to burn the engine up, so the main problem for engine at that period was cooling.
I felt the more cylinders the engine contains, the more the engine's cylinder arranged with star shape, never beyond 12 cylinders aligned V shape, because the air flow will bring the hot air from frontial cylinder to rear cylinder, thus leading to the rear cylinder too hot to cooling down, Whereas, star engine with cylinder surround the axie, so there is only three rows even 18 cylinders has to be fitted.
Now we move to the Sabre, 24 cylinders with not star aligned. How it resolve the cooling problem? And how the cylinder aligned with? Search by google, I found a couples of photos to show what this engine look like, but if without cutaway, I hard to understand its structure.
4) As we're aware of a piston engine if not star shaped, then its cooling mainly rely on liquid. however, the liquid is also need to cooling down so there is inlet we usually see underside of V engine aircraft's wing or fuselage.
But the inlet under the Typhoon is beneath the engine, not the oil cooler's inlet under P-51 is mounted rear of cockpit. This makes me ask if refrigerating oil is not transferred to far away from engine, then so much heat centralized around the engine, how it be cooling down?
By the way, I saw two inlet on P-51B/C version, on is smaller just behind the propeller under the nose, the other is much larger under cockpit, but with same engine, the P-39 merely has one inlet not so big behind canopy. Why?
1) Are there any piston engine contains more cylinders?
2) The more output power each cylinder provides, the better engine it is, but precondition here is the capability of each cylinder is not enlarged.
So the Sabre works with 24 cylinders! Supposedly, they are quite small cylinders compare to other cotemporaneous comparably engine, am I right?
3) The more cylinders the more power the engine gives, it's true but you can not pile up cylinders like wheat because it will bring too many heat to burn the engine up, so the main problem for engine at that period was cooling.
I felt the more cylinders the engine contains, the more the engine's cylinder arranged with star shape, never beyond 12 cylinders aligned V shape, because the air flow will bring the hot air from frontial cylinder to rear cylinder, thus leading to the rear cylinder too hot to cooling down, Whereas, star engine with cylinder surround the axie, so there is only three rows even 18 cylinders has to be fitted.
Now we move to the Sabre, 24 cylinders with not star aligned. How it resolve the cooling problem? And how the cylinder aligned with? Search by google, I found a couples of photos to show what this engine look like, but if without cutaway, I hard to understand its structure.
4) As we're aware of a piston engine if not star shaped, then its cooling mainly rely on liquid. however, the liquid is also need to cooling down so there is inlet we usually see underside of V engine aircraft's wing or fuselage.
But the inlet under the Typhoon is beneath the engine, not the oil cooler's inlet under P-51 is mounted rear of cockpit. This makes me ask if refrigerating oil is not transferred to far away from engine, then so much heat centralized around the engine, how it be cooling down?
By the way, I saw two inlet on P-51B/C version, on is smaller just behind the propeller under the nose, the other is much larger under cockpit, but with same engine, the P-39 merely has one inlet not so big behind canopy. Why?
