Jet engine and piston engine

Comparing thrust and horsepower is indeed a challenge because they describe different physical concepts: thrust is a force (measured in pounds or Newtons) and represents the total push produced by an engine, while horsepower is a unit of power (equivalent to 746 watts) and represents the rate at which work is done or energy is transferred.

However, there are ways to loosely translate between the two for comparison, and for applications like using two different types of engines in an RC airplane project, you might need to use a rough translation. Let's take a jet engine and a piston engine example:

Assuming you have a jet engine with 50 lb of thrust and you want to compare it to a piston engine that develops power measured in horsepower, you could use a rough conversion factor that's generally accepted in aviation: 1 lb of thrust is approximately equal to 2.241 horsepower (at 100% engine efficiency and at sea level). This would give the jet engine 50 lb x 2.241 HP/lb = 112.05 HP.

But bear in mind that this is a rough estimate and the conversion is not straightforward because it's dependent on various factors including altitude, speed of the aircraft, efficiency of the engine, and so on.

Ultimately, choosing an engine for an RC airplane also depends on additional detailed knowledge such as the weight of the aircraft, its design parameters, the ideal flight speed, to name a few. Both engines have their own set of advantages and disadvantages and understanding these is key to a thorough comparison.

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Comparing thrust and horsepower is indeed a challenge because they describe different physical concepts: thrust is a force (measured in pounds or Newtons) and represents the total push produced by an engine, while horsepower is a unit of power (equivalent to 746 watts) and represents the rate at which work is done or energy is transferred.

However, there are ways to loosely translate between the two for comparison, and for applications like using two different types of engines in an RC airplane project, you might need to use a rough translation. Let's take a jet engine and a piston engine example:

Assuming you have a jet engine with 50 lb of thrust and you want to compare it to a piston engine that develops power measured in horsepower, you could use a rough conversion factor that's generally accepted in aviation: 1 lb of thrust is approximately equal to 2.241 horsepower (at 100% engine efficiency and at sea level). This would give the jet engine 50 lb x 2.241 HP/lb = 112.05 HP.

But bear in mind that this is a rough estimate and the conversion is not straightforward because it's dependent on various factors including altitude, speed of the aircraft, efficiency of the engine, and so on.

Ultimately, choosing an engine for an RC airplane also depends on additional detailed knowledge such as the weight of the aircraft, its design parameters, the ideal flight speed, to name a few. Both engines have their own set of advantages and disadvantages and understanding these is key to a thorough comparison.

https://m.youtube.com/watch?v=SIfWCWZdfuc

A home made Jet engine

https://m.youtube.com/watch?v=bha6yZsS7oY&pp=ygUKRWRmIHBsYW5lcw%3D%3D

A russian to build a jet engine and a plane

https://m.youtube.com/watch?v=dYFYZ-g7fzA

Pulse jet engine plane (rc)

https://m.youtube.com/watch?v=CJNhoSXvxYs