If you ever get a chance to see a helo working on remote power poles, you'll get another view of incredible skill. Whirling blades, capricious winds, and swaying high-tension wires make for a challenging job.
Same for the choppers here that work tree trimming along the powerlines. They have a lead with 5 or 6 big ass circular saw blades that hang under the chopper , swaying & bouncing along.
Bird is an EC145, a design that takes from the older Kawasaki BK 117.
BK design is liked by rescue/EMS teams because of the twin power plants with combination of high TR position and clamshell rear doors for loading patients.
the bird itself was marketed as a multi-application ultility helicopter for anything from corporate, troop transport, EMS, etc, etc
lots of dumb or forgetful people out there in the general world, so a high TR position helps avoid tragedies.. Ive seen folks who work around machines even have close shaves with a TR...whereas clueless non-aircraft savvy people can tend to want to run right toward them!
-Bulletproof and Waterproof don't mean Idiotproof.
(^^ that's an earlier design Messerschmitt Bo105 twin engine,, rigid rotorhead hub, high TR, clamshell rear doors, ..features that carried over into the development of BK117 and EC145)
there's other footage on the net showing very similar , but very close to steep bare rock rather than somewhat forgiving white powder...MRBs can touch powder without necessarily disintegrating them , rock is very very different story.
For highly confined space landings in locations like PNG highland mountain jungle, some pilots will use MRBs to 'cut' away foliage if the remote natural clearing is too cramped-/aint quite big enough...now depending how big your bird is ... [ ie; rotor blade strength] ...will determine how heavy a foliage a skilled pilot can trim... grin:
-Bulletproof and Waterproof don't mean Idiotproof.
Its called a "toe in" up here. When I was fighting fire and working seismic back in the 80s it was an everyday ride. Its not as bad as it looks, just listen to the pilot and dont move until he gives you the thumbs up. We were taught to get directly underneath the bird once we got out with our gear, and stay there until it was airborne again.
At that altitude, you can actually count your blades as they pass in front of your view, just as depicted in that video. Very impressive.
"All that the South has ever desired was that the Union, as established by our forefathers, should be preserved, and that the government, as originally organized, should be administered in purity and truth." – Robert E. Lee
Yes. A regular deal for those with lots of hours. Not exited and entered in snow, but have done similar in rugged terrain when tranquilizing some wildlife.
If you ever get a chance to see a helo working on remote power poles, you'll get another view of incredible skill. Whirling blades, capricious winds, and swaying high-tension wires make for a challenging job.
Our company does this in a daily basis Rocky . . .
"All that the South has ever desired was that the Union, as established by our forefathers, should be preserved, and that the government, as originally organized, should be administered in purity and truth." – Robert E. Lee
"All that the South has ever desired was that the Union, as established by our forefathers, should be preserved, and that the government, as originally organized, should be administered in purity and truth." – Robert E. Lee
At that altitude, you can actually count your blades as they pass in front of your view, just as depicted in that video...
not sure what you mean by that alt.
Ive been to 7000 feet and beyond in various birds from two to five blade, I don't remember being able to so easily see or count the MRBs at any altitude when in flight.
videos make heli rotors so visible or 'slow' due to the frame rate of the device taking the footage. only so many frames per-second means one is only getting segments, so one is not seeing the blades spinning at the actual rate they are.
-Bulletproof and Waterproof don't mean Idiotproof.
At that altitude, you can actually count your blades as they pass in front of your view, just as depicted in that video...
not sure what you mean by that alt.
Ive been to 7000 feet and beyond in various birds I don't remember being able to count the MRBs at any altitude when in flight.
videos make hell rotors so visible due to the frame rate of the device taking the footage.
Starman, I appreciate I may not have made it clear what I was talking about. I understand lens speed on cameras, and such, but what i am talking about happened to me above 10,000 feet above sea level. I was flying a CH-46 and as I looked out the wind screen, I could see each individual blade pass across the windscreen. I assumed, that since this rescue was in the Alps, it appeared they were well above the tree line, and hence well above 10,000 feet. Of course, when I descended down to normal altitude, the blades were their usual blurr across the wind screen. Does that make sense to you?
"All that the South has ever desired was that the Union, as established by our forefathers, should be preserved, and that the government, as originally organized, should be administered in purity and truth." – Robert E. Lee
The French Allps heli rescue in the OP was at a reported 7000 feet.
I didn't see that, so it is clear the slow blades in the video are simple lens speed . . . however, in my personal experience in a CH-46, above 10,000 msl, the blades move that slowly across the wind screen.
"All that the South has ever desired was that the Union, as established by our forefathers, should be preserved, and that the government, as originally organized, should be administered in purity and truth." – Robert E. Lee
Okie , you may be referring to what's called Stroboscopic effect, but I dont how a difference in altitude would induce or reduce such.
If one goes to an airshow and views the run up of the engines ,there's a point where the prop blades become better defined, then when changing the RPM, the effect is lost.
-Bulletproof and Waterproof don't mean Idiotproof.
Okie , you may be referring to what's called Stroboscopic effect, but I dont how a difference in altitude would induce or reduce such.
Could be, but it I only observed this phenomenon above 10,000 in my CH-46. I have observed the stroboscopic effect while flying a fixed wing airplane, but the rotor blade phenomena was so different from anything I had ever observed, and it only happened above 10,000 feet.
"All that the South has ever desired was that the Union, as established by our forefathers, should be preserved, and that the government, as originally organized, should be administered in purity and truth." – Robert E. Lee
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