Boeing bids MH-139 for UH-1N replacement

a reply to: Zaphod58

Thank you. I did not realize it was that high of a percentage. But the swoosh of the rotor is what I tend to hear most. Being deaf in the high range, it's that deep tone that i hear best.

See my edit above on the last page about the 2 MSA's

originally posted by: JIMC5499
a reply to: Bigburgh

Heads up! Wings Over Pittsburgh is back this year. May 13th & 14th at the 911. F-22 Demonstration Team will be there.

Check your PM.🤗
Off topic:
I'm going to watch it from the Airport Fire Co. Pm me if you want to see it from there. Thunderbirds use the water tower over my shoulder as a reference point to turn back to to Airport.

I will have the main list of demonstration times.

a reply to: Bigburgh

A couple of the 911 guys belong to the same Vet's club that I do. We are going to take some guys from the VA Nursing Home in Butler down as guests of the 911.

a reply to: JIMC5499

Off topic: hate that VA..
You are doing kind things.
Please PM me so not to drift this thread.🤗

Also check your mail.😊

I always wondered why Baywatch helicopters had cowled/concealed tail rotor blades while black hawks had exposed blades. I always thought having the cowling with give additional protection from debris. Toy helicopters used to have a circular ring going around the blade tips. Always wondered what effect that would have on a real helicopter.

a reply to: stormcell

The HH-65 uses a Fenestron. It reduces tip vortex losses, and protects the tail rotor, and reduces noise. It also is what produces that distinct whine you hear when they fly over.

a reply to: stormcell

It would cause problems with the ability to change the pitch of the tail rotor.