Aircraft Engines and Internal Combustion Engines

What is a significant advantage of piston engines over gas turbine engines?

• Higher efficiency at high altitudes

• Greater power-to-weight ratio

• Quieter operation

• Lower initial cost

• Suitable for large airliners

What is a disadvantage of turbojet engines?

• Complex design

• High maintenance costs

• Lower efficiency at high altitudes

• Noisy operation

• Suitable for small aircraft

What is the main application of turboshaft engines?

• Commercial airliners

• Helicopters

• Hypersonic vehicles

• Military fighter jets

• Regional and commuter aircraft

What is the key characteristic of ramjet engines?

• High efficiency at high altitudes

• Lower initial cost

• Complex maintenance

• No moving parts

• Used in smaller aircraft

What is a disadvantage of piston engines compared to gas turbine engines?

• Higher initial cost

• Less efficient at high altitudes

• Suitable for a wide range of aircraft

• More complex maintenance

• Greater power-to-weight ratio

What is a significant advantage of turbojet engines?

• High-speed capability

• Better fuel economy

• Efficient at lower speeds

• Lower initial cost

• Simpler design

What is a key disadvantage of turboprop engines compared to turbojet engines?

• Higher initial cost

• Noisier due to the propeller

• Suitable for larger aircraft

• More complex maintenance

• Less efficient at lower speeds

What is a major advantage of in-line engines?

• Simple design

• Narrow front fuselage

• Liquid cooling requirement

• High power-to-weight ratio

• Smooth operation

How are the cylinders arranged in a radial engine?

• In a line

• In a "V" configuration

• Staggered on horizontally opposite sides

• Staggered on horizontally opposite sides

• Arranged in a circle around a central crankshaft

What is a key advantage of the V-Type engine?

• Simplicity

• Staggered cylinder arrangement

• Better power-to-weight ratio

• Joined by a common crankshaft

• Reliability