MI8 - what's the verdict ?

[lorenzoj]

i flew a few hours now... what i have are some small problems with the AP... but its more on my side, not an issue on the side of Belsimtek i think ;)

 

I think the biggest help is to avoid thinking of the system as an AP and more as a flight stabilization assistant. More a part of the trimming function then auto-pilot.

 

I've also found that at times it really helps to "clear" the accumulated corrections that have built up. There are some good docs out there on how to best use the system too.

[Cibit]

There are some good docs out there on how to best use the system too.

links?:music_whistling:

[dahui]

oh, i forgot:

 

i miss the CargoHook :cry:

[VanjaB]

I wasnt planning on getting this chopper, but then it went on sale and now Im really glad I did. Its very differnent from the Huey and I think it will take some time to master. Its slow though, very slow. Tried pushing the collective to the max and it simply wont go faster than 220-230kph. It is very stable at speed though, there are no noticable vibrations unless you decide to take it for a dive and pick up more speed :)

[lorenzoj]

Quote:

Originally Posted by lorenzoj

There are some good docs out there on how to best use the system too.

 

links?

 

Starting on page 2-46 of the MI-17 manual included with our MI-8 is a good description of the autopilot system and how to employ it.

[Luzifer]

Its slow though, very slow. Tried pushing the collective to the max and it simply wont go faster than 220-230kph.

 

No? I usually find myself at 250 km/h very quickly if I don't pay attention to my speed and I am not even close to using full collective. I was mostly flying on multiplayer servers where the provided helos aren't fueled up to the gills though.

 

It's faster than the Huey in any case.

Edited September 23, 2013 by Luzifer

[lorenzoj]

Because it's not as twitchy as an attack helicopter on the move I think the sensation is of being in a slower bird then it actually is. And this is a big heavy beast compared to the Huey. Pretty peppy for it's size I think.

[SilentSierra]

...

Edited April 13, 2016 by SilentSierra

[VanjaB]

No? I usually find myself at 250 km/h very quickly if I don't pay attention to my speed and I am not even close to using full collective. I was mostly flying on multiplayer servers where the provided helos aren't fueled up to the gills though.

 

It's faster than the Huey in any case.

 

How is it faster than the Huey, I can reach 140 knots in the Huey but somehow I cant get past 230km/h in the Hip. So far Ive done the free flight missions, and have tried pushing the helicopter to its limits. Could it be an autopilot thing?

[Cibit]

When I reach that speed in a huey it shakes likes its about to explode. The Mi-8 is smooth at higher speeds and I think its way faster than huey too.;)

 

Thanks lorenzoj

Edited September 23, 2013 by Cibit

[cichlidfan]

When I reach that speed in a huey it shakes likes its about to explode.

 

That may be because, according to Bell/Textron, the max speed is 135. :P

[Geronimo989]

It is much harder to fly than both huey and hokum for me. Somehow that feels right :)

Also I love its heavy armament, 120 rockets is a lot of firepower.

[cichlidfan]

My question is: Will the DCS support the multicrew MP, load/unload with troops/vehicles animations and crane heavy cargo feature?

 

I think this and the Huey will be in beta until they do. ;)

[Rocky49]

Well, speed wise, 135 knots is 250 kph :music_whistling: So it would appear they have the same top speed?

[MariuszDW]

Mi-8 can go faster:

http://youtu.be/kBoxuksyXV0?t=4m40s

[Rocky49]

Well, it appears that the top speed of the Mi-8 is about 260 or 250 kph depending which site you go to. As previously stated earlier in this thread, top speed of Huey is about 135 knots, so they are so close that essentually they are the same::)

Edited September 24, 2013 by Rocky49

[MariuszDW]

I thought it was 135 mph

[Rocky49]

North amercian a/c speeds are generally stated in knots

[AlphaOneSix]

The U.S. didn't generally start using knots as the standard unit for airspeed until the mi-1970s.

[Luzifer]

How is it faster than the Huey, I can reach 140 knots in the Huey but somehow I cant get past 230km/h in the Hip. So far Ive done the free flight missions, and have tried pushing the helicopter to its limits. Could it be an autopilot thing?

 

I don't know. I can go 280 km/h at sea level without shaking and without full collective. Autopilot active except for altitude hold.

 

[Rocky49]

If that is the case then 135 mph equals 217 kph

[whitehot]

I never believed I would enjoy to fly M-8 that much, Its like those old cars with soft suspension.

 

I agree to the fullest!

[VanjaB]

I am retarded. The Mi-8 can indeed hit speeds of 260kph, for some reason I was reading this out as 230 kph, I dont know why, but major :doh: here.

 

So it seems that the two are indeed very close in speeds, except that the Huey shakes almost uncontrollably at these speeds and feels like its going to burn out its engine at any second and the Mi-8 is as smooth as silk.

 

Faulty flight dynamics or seriously impressive soviet aeronautical engineering?

[dahui]

different rotor system, different MR RPM, different engineering, different physics... different track and balance

[Focha]

@A16 :

 

Okay but the Mi-8 is larger than the Huey isn't it ? so, considering the blade chords are even only 1cm less, as the ship is larger ... it looks like thin blades... like the Hughes 500D 5 blade rotor system, which as also very thin blades... like the Hughes 300 etc etc ... I'm not an aeronautic engineer at all, but I realised a while ago that generally, the more blade, the thinner ... ( in respect of global rotor size of course )

 

Take the Bell 214 ... then the Hughes 500 :doh:

 

Are you talking about chord length? If you are, then you are right. In aerodynamically terms;

 

L = (1/2) d v2 s CL

 

Lets consider equal density (d), equal lift coefficient (CL).

 

v, velocity, for simplicity lets consider RRPM in this case, is more or less the same.

 

Lets take a look at s factor. Wing area. Lets say that the wing area is constant. If you have more blades they will look thinner, because they can be for the same Lift (L). Lets say you have s = 8m2, if you have two blades, the s of each blade will be 4 m2 now if you have 4 blades, each blade will have 2 m2. So they will in fact be "thinner", assuming the blades have the same length.

 

For example; Bell 212 and Bell 412.

 

Hope you understand it correctly, if for any reason I am wrong please correct me.

 

Best regards.