[NOT A BUG] Turbo-prop sound is heard above mach 0.8

In external view, anytime above M 0.8 I can hear a distinct turboprop engine sound when viewing from the front in both F2 and F3 views. I can also hear it internally just a tad.

Every aircraft have specific sound. The F/A-18 has a certain growl at certain speeds and engine/throttle settings. The F-15 and 16 have their own unique sound if you hear them enough time, you get to recognize the differences. Specially, if you live by a runway, when they do landing approaches (which they normally do several every time before landing).

I heard it hundred of time with F/A-18 and now I can't find a video to demonstrating it, go figure.

Edit:

Is this what you mean?

Cy172p0V8SM?start=30

+1

Same here since the update ... I’m hearing it also when I’m sat in the F18 cockpit flying and at the upper speed it sounds as though there is a prop plane near me .... causing me to pivot head and check six ....

Anyone else picking this up ....

@mvsgas, here's a small video that you'll get it a bit better, thogh most of the time i've heard only the sort of properler sound, when i recorded this test, you get to hear both sounds overlapping, and i doupt the sound comes from the Mig-29 behind me :) But i think ED knows about it, as i remember reading something already a while ago on this.

You get normal sound then weird sound after in the vid.

I've read in some books about the Hornet that the Lex makes a buzzing/humming sound at high subsonic/transonic speeds. Could this be it?

@mvsgas, here's a small video that you'll get it a bit better, thogh most of the time i've heard only the sort of properler sound, when i recorded this test, you get to hear both sounds overlapping, and i doupt the sound comes from the Mig-29 behind me :) But i think ED knows about it, as i remember reading something already a while ago on this.

 

 

You get normal sound then weird sound after in the vid.

 

 

 

Maybe they where trying to emulate vortex rumble or inlet rumble and it is coming on at the wrong speed or AOA.

Looking through the manuals I do not see anything indicative of that noise at that speed or AOA.

Does it only occur at specific conditions, with a specific load out? Does it seem random? Could you guys load a track so maybe guys at ED could see it after the holidays.

A track is better than I video because they can get many more parameters out of it.

I initially thought it was the smoke pods but it is present with all different load outs and even completely clean.

It makes the sound between about 480-530kts down low. (didnt check mach number)

:(

It’s a feature, not a bug ;)

That’s just the hum the F-18C makes when it gets above a certain speed. I’m not sure if it’s intake related or from the lerx but the real deal definitely does something similar. Quite what it would sound like from F2 view in real life might well be consider a “turboprop noise” and from the outside on the ground it would get doppler shifted like the above IRL video clip. Anyway it’s WIP so I’m sure it’ll be improved.

It is to fool the enemy into thinking that the radar blip is a p-51 ;)

It’s a feature, not a bug ;)

 

That’s just the hum the F-18C makes when it gets above a certain speed. I’m not sure if it’s intake related or from the lerx but the real deal definitely does something similar. Quite what it would sound like from F2 view in real life might well be consider a “turboprop noise” and from the outside on the ground it would get doppler shifted like the above IRL video clip. Anyway it’s WIP so I’m sure it’ll be improved.

I get it sounds ok from a doppler effect perspective, but according to my testing, the prop noise is directly affected by engien RPM (i.e. throttle position), so I guess it needs to be worked on.

Form the F3 view I have to say it sounds veyr nice.

Sounds like it's trying to replicate the "Hornet howl" which happens above 400ish knots at low altitude.

When i hear the sound in the video, then i mostly though that 1st april came early this year.. ha ha and its a joke. :megalol:

But yes jets do sound different in some situations and in what angle you hear the sound from ( sometimes ) but dident notise that sound in dcs yet ;-)

Duom76,

Your video track is exactly what I’m hearing ...

Never heard this before the update... anyone comment if this is replica to life or currently a feature / bug ...

Jim

Airflow over the gun muzzle I bet. Similar to the howl or whine from WWII aircraft at high speed from the gun ports. The Hawker Hunter has a very unique sound called a "bluenote".

Airflow over the gun muzzle I bet. Similar to the howl or whine from WWII aircraft at high speed from the gun ports. The Hawker Hunter has a very unique sound called a "bluenote".

 

It's from the LEXs

I agree, it's not a bug. It's a feature, perhaps it requires a bit of tweaking but it's not a bug.

I agree, it's not a bug. It's a feature, perhaps it requires a bit of tweaking but it's not a bug.

Nice, i learn new stuff everyday :) I only had to chance to hear and see Hornets in Real-Life a few times, and didn'T know about that sound, only one i ever heard was the howling, and thought that was the one people in this thread meant to be in DCS, but sounded a bit different which made me thought it was a sound bug playing the wrong sound maybe intented for placeholder, as i often heard the howling i thought of in DCS which sounded different got me wondering. Someone was able to record the howl i thought that most people talked about in this thread ont he below video at 0:23. But again, sticking to a F2 view sound different and can get confusing versus that when it passes over as you hear the sound in non-stop loop, not too often i watch sticky F2 views, specialy from the front point of view.

It sounds exactly the same as a prop plane . As if I am using a c-130

as stated by actual former Hornet pilots... this is a real thing from the LEXs specifically on the F/A-18C Hornets.

Please remove the turboprop sound. First...It's annoying. Second.. If you want to do the whistle... Do the right one.

Please remove the turboprop sound. First...It's annoying. Second.. If you want to do the whistle... Do the right one.

Perhaps it a sound bug but let ED confirm this.

Don´t see any statement from ED to this... Could please anyone of the team make a statement whether it´s a bug or a feature with "unlucky" sound.

I've heard some strange sounds from the Hornets when I was in, including a strange buzz similar to what we're hearing here. For whatever it's worth, on my particular system, it is not throttle dependent, but airspeed dependent, and disappears above and below certain speeds, though I haven't checked altitudes.

If you listen closely, you can hear this sound emanating from the Hornet in this video at the Mach Loop. Fast forward to 5:45 for the Bug.