| Msg ID: 2734376 |
What happened in the first crash? +0/-0
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| Author:Osprey
7/3/2022 10:56:49 PM |
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| Msg ID: 2734383 |
What happened in the first crash? +3/-0
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| Author:Aroedinamics
7/4/2022 1:09:22 AM Reply to: 2734376 |
Right to left wind (cockpit orientation) retreating blade stall or SWP on the left propeller and no go around. They were in trouble 3-5 seconds before it’s apparent on video |
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| Msg ID: 2734409 |
What happened in the first crash? +0/-2
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| Author:Mel
7/4/2022 10:43:39 AM Reply to: 2734383 |
That's not a helicopter. |
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| Msg ID: 2734426 |
What happened in the first crash? +2/-1
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| Author:Could NOT Have Been Retreating
7/4/2022 1:42:35 PM Reply to: 2734383 |
Blade stall. |
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| Msg ID: 2734459 |
MV-22 What happened +0/-0
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| Author:ISFWes
7/4/2022 8:28:58 PM Reply to: 2734376 |
The investigation outlines a complex but low-risk mission. The Marine Corps determined the aircraft crashed due to facing too much downwash and not having the thrust to hold its hover, but the aircraft may also have been carrying too much weight,
Defense Department official told USNI News. Naval Air Systems Command engineers have since looked at the effect of the downwash on a landing aircraft and the amount of power the Osprey needs to overcome that downwash and land safely,
and have since made some adjustments regarding how much weight an Osprey may carry on approach to a U.S. ship at sea to ensure it has the power it needs to land, the official said. The investigation report makes clear that no one was at fault in the incident and that all three personnel died in the line of duty and not due to misconduct.
https://www.thedrive.com/the-war-zone/harrowing-video-of-deadly-2017-mv-22-ospr
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| Msg ID: 2734500 |
MV-22 What happened +0/-0
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| Author:Good To See You Are Still Around
7/5/2022 9:26:21 AM Reply to: 2734459 |
Your posts are very informative and wel researched. |
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| Msg ID: 2734600 |
MV-22 What happened +0/-1
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| Author:Yes yes
7/5/2022 5:23:36 PM Reply to: 2734500 |
they were facing too much downwash. got it. |
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| Msg ID: 2734788 |
MV-22 What happened +1/-0
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| Author:Very
7/7/2022 1:58:57 PM Reply to: 2734459 |
high blade loading makes mishaps like this unpredictable which is why our company did not put a down payment on the 609 back in '98. Think differential and equilateral blade loading and adverse inflow disruptions and blade element theory of lift and feel free to keep piling on! |
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| Msg ID: 2734583 |
I would bet... +0/-1
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| Author:Tilt rotor critic
7/5/2022 4:36:14 PM Reply to: 2734376 |
We cannot see exactly where the MV-22 was positioned in relation to the deck, but we can see that they had a crosswind. So I'd guess that in addition to all of the other factors (e.g. high g.w., excessive downwash?), that there was some interaction between the proprotors (and maybe even some FBW confusion) that caused that roll instability that we see just before the crash. I would bet that there are still some things that the big-brain guys don't know and cannot predict about how those proprotors work in every situation. |
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