Superchargers are engine-driven air pumps that give the engine additional pressure to the induction air, which results in additional power. Superchargers have the capability to boost manifold pressure above 30 “Hg.
Superchargers help to compress air at higher altitudes, allowing the aircraft to produce the same manifold pressure as it would if it were at mean sea level (MSL). If an aircraft were at 8,000 feet, its engine might produce around 75 percent of the total power it could produce if it were flying at sea level.
The Superchargers used in aircraft becomes extremely beneficial at higher altitudes (above 18,000 ft). At high altitudes, the air density is 50 percent than that of at sea level. Using a supercharger, in that case, supplies air to the engine at the same density it would if it was still at sea level.
In normal operating conditions the supercharger is in a low blower position during takeoff. The engine acts as if it is ground-boosted, and while the aircraft gains altitude, the power output decreases. Once the aircraft reaches the desired altitude, power is reduced, and the supercharger is switched to a high blower position. Once that position is reached, the throttle is set to the desired manifold pressure.
Some Key Benefits of a Supercharger
Disadvantages of a Supercharger
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