wardialer
Topic Author
Posts: 1183
Joined: Fri Sep 14, 2001 1:08 pm

### Horsepower On The MD520N Notar

I have been investigating the horsepowers of the MD520N Notar helicopter and it said that those Allison 250-C20R engines have a 450 shp and continuous shp of 375. What is the difference between the horsepowers of a Cessna or other prop aircraft compared to the Notar? And what is shaft horsepower compared to just horsepower?

EssentialPowr
Posts: 1646
Joined: Wed Sep 06, 2000 10:30 pm

### RE: Horsepower On The MD520N Notar

Horsepower is simply work/time. In metric units,

work = force*distance = Newton Meters (called a Joule)
power = work/time = Joule/sec = Watt.

So, watts and horsepower are Power terms.

Horespower can easily be converted to watts, similar to temperature in F being converted to C.

There is no difference in horsepower whether it's measured at a shaft, pulley, crank, flywheel, or any other mechanical output.

Cheers

wardialer
Topic Author
Posts: 1183
Joined: Fri Sep 14, 2001 1:08 pm

### RE: Horsepower On The MD520N Notar

For example: If the MD520N NOTAR helicopter has a shaft hp of 450 and a Cessna 182 has a hp of ( the same) 450 does that mean that they have the same equal power as in cruise and take-off power?

EssentialPowr
Posts: 1646
Joined: Wed Sep 06, 2000 10:30 pm

### RE: Horsepower On The MD520N Notar

If both powerplants produce 450 hp in the takeoff regime, or cruise regime, per your example, then they are identical.

Obviously, a 182 w/ 450 hp is certainly not typical...

wardialer
Topic Author
Posts: 1183
Joined: Fri Sep 14, 2001 1:08 pm

### RE: Horsepower On The MD520N Notar

On this one website about the NOTAR, the engine specs stated that shp was 450. But it also stated that a continuous shp 350 was also applied. What is the difference between the two?

B737-112
Posts: 829
Joined: Tue Nov 30, 1999 6:01 pm

### RE: Horsepower On The MD520N Notar

Does FS98 really need the information to be that accurate? Just fly the NOTAR in those damn circles and be happy!

FredT
Posts: 2166
Joined: Thu Feb 07, 2002 9:51 pm

### RE: Horsepower On The MD520N Notar

Max continuous horse power is just that - the horsepower the engine can output for an unlimited time withouth taking damage. Maximum horsepower comes with a time limit.

Cheers,
Fred
I thought I was doing good trying to avoid those airport hotels... and look at me now.

wardialer
Topic Author
Posts: 1183
Joined: Fri Sep 14, 2001 1:08 pm

### RE: Horsepower On The MD520N Notar

Hey B737-112, you dont know anything. OK.

B737-112
Posts: 829
Joined: Tue Nov 30, 1999 6:01 pm

### RE: Horsepower On The MD520N Notar

Oh but Wardialer, I do. I'm the one that sold you the computer and monitor you are using now and I helped you install FS98 and FSEditor so you can alter the horsepower and all. Then you called me up for information about downloading the NOTAR so you can put it to Flight Sim.

To set the record straight for everybody else my original post was just an inside joke between friends like all friends do but instead he's mad and has not talked to me since I posted that first post. As you guys can tell I was not slamming him at all, it was simply a joke which he didn't understand. Learn to understand humor Wardialer.

wardialer
Topic Author
Posts: 1183
Joined: Fri Sep 14, 2001 1:08 pm

### RE: Horsepower On The MD520N Notar

B737-112,

Just answer the question. It really shows that your not even into the technical stuff Uh. I'm just educating myself and your not.

B737-112
Posts: 829
Joined: Tue Nov 30, 1999 6:01 pm

### RE: Horsepower On The MD520N Notar

It took you 5 days to come up with a response like that, sure was quick thinking!

Wardialer, why are you so embarrased about playing Flight Sim, there's a whole forum just for you guys. I think it's cool, why take offense to it? I don't see the issue.

wardialer
Topic Author
Posts: 1183
Joined: Fri Sep 14, 2001 1:08 pm

### RE: Horsepower On The MD520N Notar

B737-112,

I think your in the wrong topic because obviously you can't come up with a good answer. Oh, I know why, because you don't seem interested in one of the worlds greatest choppers ever invented. Trust me, there are other things in a chopper than flying in circles. Did you even know that? HA HA HA

FredT
Posts: 2166
Joined: Thu Feb 07, 2002 9:51 pm

### RE: Horsepower On The MD520N Notar

May I suggest that you two take it to email, phone or the street before further embarassing yourselves in public, not to mention clogging up the forum with whatever issues you have with each other?

Cheers,
Fred
I thought I was doing good trying to avoid those airport hotels... and look at me now.

wardialer
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