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Counterclockwise?
 
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Would be a quick way to go.

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Old 01-04-2023, 07:21 AM
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Quote:
Originally Posted by masraum View Post
I've always wondered that myself. In the movies, everyone is always ducking/crouching when they walk out from under a helo's blades, but it always looks like the blades are several feet away from them, high enough that walking upright wouldn't be an issue.
Even if the blades are high enough so one could remain fully erect I think for the majority of people the natural instinct would be to duck.
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Old 01-04-2023, 08:38 AM
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Quote:
Originally Posted by stomachmonkey View Post
Even if the blades are high enough so one could remain fully erect I think for the majority of people the natural instinct would be to duck.
Absolutely! Having a 20' "sword" whipping past your head would be pretty scary. But I assume it's gotta be a thing because it's almost universal. I guess the President may not do it when walking to/from Marine 1. I'm not sure. I don't know that I've ever seen a Pres board it on video, and I think those things are big/tall.
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Old 01-04-2023, 08:54 AM
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Counterclockwise?
 
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Quote:
Originally Posted by stomachmonkey View Post
Even if the blades are high enough so one could remain fully erect I think for the majority of people the natural instinct would be to duck.
Why do we duck when it's raining?
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Old 01-04-2023, 09:34 AM
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Quote:
Originally Posted by masraum View Post
Absolutely! Having a 20' "sword" whipping past your head would be pretty scary. But I assume it's gotta be a thing because it's almost universal. I guess the President may not do it when walking to/from Marine 1. I'm not sure. I don't know that I've ever seen a Pres board it on video, and I think those things are big/tall.
I don't remember the rotors moving when the POTUS is walking under them. Maybe this is a policy.
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Old 01-04-2023, 10:15 AM
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The vanes can take a whole frozen turkey without damage.
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Old 01-04-2023, 11:03 AM
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Quote:
Originally Posted by stevej37 View Post
The vanes can take a whole frozen turkey without damage.
Negative! While the engine may continue to operate (sub-standard, at best), there is definitely damage done to the vanes, and other parts, inside the engine.
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Old 01-04-2023, 11:54 AM
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sorry...had the wrong video. At 1:45 for the bird.

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Last edited by stevej37; 01-04-2023 at 12:03 PM..
Old 01-04-2023, 11:57 AM
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Originally Posted by rcecale View Post
Nothing new here...

That's just terrifying. It almost looks like a Looney Tunes sequence in the way that it just sucked him up. I wonder if they Article 15'd the guy.
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Old 01-04-2023, 12:34 PM
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Quote:
Originally Posted by rcecale View Post
I was a Final Checker in my Hornet gun squadron. Night ops on the flight deck of a carrier were my favorite (Yeah,maybe I'm a little strange...). But the adrenaline rush, and the constant need to be 100% aware of your immediate surroundings really kept the blood flowing. The steamier the cats were, the better!
Wow.

Quote:
Originally Posted by flatbutt View Post
How high is the risk of being struck by a spinning rotor blade?
Two risks, that are separate: main and tail rotor.

The issue with the main rotors on most helicopters is control authority in pitch, even on the ground, which is why no one ever enters the rotor arc from the front of the aircraft while spinning, always from left or right. The disc can get to five feet on the H-60 forward.

There have been some horrific accidents on small ships involving the main rotor.

Tail rotor pretty self explanatory.
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Last edited by Seahawk; 01-04-2023 at 12:49 PM..
Old 01-04-2023, 12:47 PM
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Quote:
Originally Posted by stevej37 View Post
The vanes can take a whole frozen turkey without damage.
Ha. Now you reminded me about the Thanksgiving episode of WKRP in Cincinnati.
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Old 01-04-2023, 01:33 PM
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^^^ Smoked and sliced turkey is the best.
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Old 01-04-2023, 01:34 PM
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Quote:
Originally Posted by Seahawk View Post

Tail rotor pretty self explanatory.
Is a tail rotor strong enough to "suck" you in like a jet intake?
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Old 01-04-2023, 01:38 PM
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Quote:
Originally Posted by rcecale View Post
I was a Final Checker in my Hornet gun squadron. Night ops on the flight deck of a carrier were my favorite (Yeah,maybe I'm a little strange...). But the adrenaline rush, and the constant need to be 100% aware of your immediate surroundings really kept the blood flowing. The steamier the cats were, the better!

Randy
We had an airman back into a C2 prop while it was warming up during night OPs. With all of the launch and recovery noise and movement he didn’t hear it and obviously had a lapse in awareness. Nothing much left above the waist. Would have been so quick, immediate lights out. I had buddies in Crash and Salvage that had to do the FOD walk down after that and I had an outboard antenna right off the catwalk that I had to wash off. They parked and roped off the C2 in the hangar Bay until we got back in port. Couldn’t touch it until the investigation was completed.
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Old 01-04-2023, 02:04 PM
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Quote:
Originally Posted by Seahawk View Post
Wow.



Two risks, that are separate: main and tail rotor.

The issue with the main rotors on most helicopters is control authority in pitch, even on the ground, which is why no one ever enters the rotor arc from the front of the aircraft while spinning, always from left or right. The disc can get to five feet on the H-60 forward.

There have been some horrific accidents on small ships involving the main rotor.

Tail rotor pretty self explanatory.
Five!? Holy moly. At idle? Forgive but I know nothing of helo ops.
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Old 01-04-2023, 02:26 PM
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Quote:
Originally Posted by 70SATMan View Post
We had an airman back into a C2 prop while it was warming up during night OPs. With all of the launch and recovery noise and movement he didn’t hear it and obviously had a lapse in awareness. Nothing much left above the waist. Would have been so quick, immediate lights out. I had buddies in Crash and Salvage that had to do the FOD walk down after that and I had an outboard antenna right off the catwalk that I had to wash off. They parked and roped off the C2 in the hangar Bay until we got back in port. Couldn’t touch it until the investigation was completed.
"Swivel head" was the term we used. If your head wasn't constantly in motion, constantly scanning the area 360 degrees around you, you were just an accident waiting to happen. There was no room for complacency on the flight deck, and mistakes were very costly!
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Old 01-05-2023, 05:49 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #36 (permalink)
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That's a nice video, but having worked in the industry, around jet engines for 20 years, I've seen my fair share (up close and personal) of what a real bird ingestion can do to an engine.

Quote:
Originally Posted by stevej37 View Post
sorry...had the wrong video. At 1:45 for the bird.

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Old 01-05-2023, 05:58 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #37 (permalink)
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Quote:
Originally Posted by Seahawk View Post
Wow.



Two risks, that are separate: main and tail rotor.

The issue with the main rotors on most helicopters is control authority in pitch, even on the ground, which is why no one ever enters the rotor arc from the front of the aircraft while spinning, always from left or right. The disc can get to five feet on the H-60 forward.

There have been some horrific accidents on small ships involving the main rotor.

Tail rotor pretty self explanatory.
Yep, tail is obvious. Thanks for the explanation on the main. I'd always wondered. This makes sense. I don't normally think about the rotors being anything other than parallel to the helicopter.
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Old 01-05-2023, 06:43 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #38 (permalink)
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Quote:
Originally Posted by masraum View Post
Yep, tail is obvious. .
you would think..
but many a crewmember has tackled folks who ..
jump out before being cleared and go towards the rear...

saw same when a CMS jump out ..
before the shirts cleared us..
wham ..down he went..
then the Airboss had a piece of his a$$$..
something he hadn't experienced in years for sure..



Rika
Old 01-05-2023, 10:17 AM
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Quote:
Originally Posted by flatbutt View Post
Five!? Holy moly. At idle? Forgive but I know nothing of helo ops.
Interesting tidbit, Flat: Modern helos do not idle in terms of rotor speed...the main rotor spins at the same RPM when the helicopter is on the ground or in the air when the engines are engaged.

The term is Nr. When the pilot increases collective (essentially the gas pedal) to go fly, the Nr remains constant throughout the flight - at least I always hoped so

In the Navy H-60 the Nr is 258 RPM.

Nr below the constant RPM is called "drooping". Drooping is bad.

The only time the Nr changes is on shutdown, at least in the Navy. I can see the shutdown checklist as I type

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Old 01-05-2023, 11:05 AM
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