External sounds audible in cockpit with engine running?

[droz]

So, there are several factors you have to think about in this situation.

1. Is the airplane pressurized?
2. What type of headset are you using?
3. Current day ANR headsets drown out external noise.
4. The list goes on.

The complicated answer to this is, back then, aircraft were not pressurized, engines may have been loud, but they did not drown out everything.

Sound waves move in a direction, and decrease or increase in intensity based on several factors.

As a real pilot, when I choose to, I can remove my headset, open the window, and I can hear all sorts of sounds outside of the cockpit. Many times I have opened the window and hear a plane passing by.

In the 1940's, they did not have ANR headsets, and typically, it was just a couple of small speakers inside earmuffs. It's that simple. No noise reduction, nothing to really keep the sounds out. In many ways, what was used was no better than wearing nothing.

So, to keep it simple, I'd prefer realistic. Realistic, in this case, is being able to hear the engines, the wind, and guns firing, you name it. Sound travels. It's more powerful than you think. This is not space. These are not pressurized aircraft. It's that simple.

[ATAG_Snapper]

Originally Posted by droz

So, there are several factors you have to think about in this situation.

1. Is the airplane pressurized?
2. What type of headset are you using?
3. Current day ANR headsets drown out external noise.
4. The list goes on.

The complicated answer to this is, back then, aircraft were not pressurized, engines may have been loud, but they did not drown out everything.

Sound waves move in a direction, and decrease or increYase in intensity based on several factors.

As a real pilot, when I choose to, I can remove my headset, open the window, and I can hear all sorts of sounds outside of the cockpit. Many times I have opened the window and hear a plane passing by.

In the 1940's, they did not have ANR headsets, and typically, it was just a couple of small speakers inside earmuffs. It's that simple. No noise reduction, nothing to really keep the sounds out. In many ways, what was used was no better than wearing nothing.

So, to keep it simple, I'd prefer realistic. Realistic, in this case, is being able to hear the engines, the wind, and guns firing, you name it. Sound travels. It's more powerful than you think. This is not space. These are not pressurized aircraft. It's that simple.

Droz, one thing puzzles me. You make no specific mention of aircraft/engine type, just a general "the list goes on". ????

If I'm driving a Honda Civic down the highway how could that compare in any way to an all-out fuelie roaring down the quarter mile strip? To say "engines may have been loud" is an understatement. Do the aircraft you fly actually compare to their noise levels? Do not modern civil aircraft have to conform to specific noise levels? I defer to your experience as a real pilot and only ask this as a "are we not comparing apples to oranges?" - type of question when it comes to relative noise levels. I served two years in the Cdn Artillery (105mm field howitzers) so I have a good idea of what loud is -- and I'm saying the Harvard is LOUD!

[droz]

Oh, the Harvard is loud. I'm lucky enough to fly out of an fbo that houses 3 jack roush p51's. I have heard those things. I understand they are loud. I've heard them up close too. I can compare them to the 172's and seminole I fly. Is honestly say the 51 is louder, though not oppresively so. As such, I can clearly hear other things around me. I was fortunate enough to be ten feet away when the 51 started a runup once. I could audibly hear other things around me without issue.