PPRuNe Forums

PPRuNe Forums (https://www.pprune.org/)
-   Rotorheads (https://www.pprune.org/rotorheads-23/)
-   -   Bad fast roping video (https://www.pprune.org/rotorheads/623300-bad-fast-roping-video.html)

MikeNYC 7th Jul 2019 16:27

Bad fast roping video
 
Wonder what the story is here? Anyone have more details? Coming in hot!



LRP 7th Jul 2019 16:56

Wow....out of airspeed, altitude and ideas. Appears to be a UH-1Y.

Winnie 7th Jul 2019 16:57

nope, that is a Bell 412 of some form.

havick 7th Jul 2019 18:15

Ooooooooops....


Sir Niall Dementia 7th Jul 2019 20:56

Bet the “de-brief” from the guys on the ropes was interesting.................

SND

Bell_ringer 7th Jul 2019 21:00

is it just me or does that look a bit fake?

FH1100 Pilot 7th Jul 2019 21:03

They surely neglected the 2-minute cool down - Shame on them!

[email protected] 8th Jul 2019 11:58

Someone hasn't learned how to finish off a quickstop properly...........

212man 8th Jul 2019 12:51


Originally Posted by Bell_ringer (Post 10512404)
is it just me or does that look a bit fake?

It's just you!


Bell_ringer 8th Jul 2019 13:12


Originally Posted by 212man (Post 10512876)
It's just you!

I can see clearly now the wine has gone :}

Otterotor 8th Jul 2019 17:04

No need to fast-rope when you're sitting on the ground!

I agree with Winnie... two blades on the tail rotor and the main rotor hub configuration give it away as being a Bell 412.

Otter

SASless 8th Jul 2019 17:42

Sorta hard on the Troops....having to step up to get off the aircraft while looking at a piled up Fast Rope!

nomorehelosforme 8th Jul 2019 23:48

SAS,
I thought the Fast Rope acted well as a cushion for the skids! I do feel sorry for the assault team, after gathering themselves I’m sure they wanted to direct their assault at the poor guys that just dumped them on terrafirma !

Tickle 9th Jul 2019 03:57

Is this a good example of vortex ring state or settling with power?

[email protected] 9th Jul 2019 04:29

Most probably VRS but a clear example of what happens if you don't get your power in early enough towards the end of a quickstop.

It depends when you think he ran out if power - was it before the descent started and he didn't have enough for OGE, drooped the NR and began to descend (SWP) or was it as he hauled in the lever while he had low airspeed and an effective rate of descent due to the flare which then led him to ingest his own downwash and develop VRS?

A bit of a moot point really - he just porked a simple manoeuvre very badly and was lucky enough to walk (or limp) away from it.

Hughes500 9th Jul 2019 04:42

Crab

Not sure he would have caught up with his own downwash as presumably fairly heavy so a large downwash speed. Looks more like poor flying, too aggressive flare with power coming in way too late, evidenced by the ac descending while still in the flare. So poor technique

[email protected] 9th Jul 2019 06:11

Hughes500 - poor technique definitely but the harsh flare is one of the classically referenced methods of getting into VRS since the disc is seeing airflow from beneath so as the flare effect reduces and you add power (especially with that much nose up) you effectively satisfy the criteria for VRS. You have a RoD flow, low speed and power being applied.

Not saying it definitely is but it is a strong contender.

Bell_ringer 9th Jul 2019 06:20

There isn't anything about this arrival that can be blamed on aerodynamic effects, unless you are referring to the the airflow between the ears :E

Hughes500 9th Jul 2019 17:12

Crab
As an aside Was told years ago by someone from Sikorsky that a CH53 was impossible to put into VRS as it pushed air down so rapidly you couldn't physical catch it up. Personally I think he just ran out of power or air underneath depending on how you want to look at it

Max Power 3503e 9th Jul 2019 18:26

Another good VRS training video for the library.


All times are GMT. The time now is 13:38.


Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.