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Search: Posts Made By: JimEli
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Forum: Rotorheads
3rd Jan 2023, 13:57
Replies: 54
Views: 14,221
Posted By JimEli

Similar in type events: SEA07LA110...

Similar in type events:

SEA07LA110 (https://app.ntsb.gov/pdfgenerator/ReportGeneratorFile.ashx?EventID=20070501X00488&AKey=1&RType=HTML&IType=LA)
DEN04CA058...
Forum: Rotorheads
2nd Jan 2023, 15:53
Replies: 54
Views: 14,221
Posted By JimEli

As best I can tell, gusty conditions at KBVU...

As best I can tell, gusty conditions at KBVU around time of crash:KBVU 280035Z AUTO 17011G20KT 10SM BKN090 17/M02 A2977 RMK AO2
Forum: Rotorheads
28th Dec 2022, 14:06
Replies: 161
Views: 13,064
Posted By JimEli

Doesn't pass the smell test. The background rate...

Doesn't pass the smell test. The background rate of myocraditis is 10-22 in 100,000 (https://pubmed.ncbi.nlm.nih.gov/32127272/). 4 in 17 million means the vaccine cured myocarditis and we should be...
Forum: Rotorheads
25th Dec 2022, 15:55
Replies: 161
Views: 13,064
Posted By JimEli

Your numbers seem suspect. There were at least 2...

Your numbers seem suspect. There were at least 2 cases of myocarditis in the initial trial of 18000.
Forum: Rotorheads
22nd Dec 2022, 15:03
Replies: 161
Views: 13,064
Posted By JimEli

I think a pulmonary embolism would ground you: ...

I think a pulmonary embolism would ground you:

Pfizer’s COVID-19 vaccine has been linked to blood clotting in older individuals, according to the FDA. FDA researchers looked at data covering 17.4...
Forum: Rotorheads
22nd Dec 2022, 03:25
Replies: 161
Views: 13,064
Posted By JimEli

Allow me to assist (it's not a mainstream news...

Allow me to assist (it's not a mainstream news oraganization, so you might be inclined to find it unreliable).
Australian government stats....
Forum: Rotorheads
21st Dec 2022, 14:15
Replies: 161
Views: 13,064
Posted By JimEli

The Devil's Advocate...

The Devil's Advocate (https://wherearethenumbers.substack.com/p/the-devils-advocate-an-exploratory).
Forum: Rotorheads
10th Oct 2022, 13:38
Replies: 35
Views: 5,395
Posted By JimEli

EC-135 Cave Creek, AZ ...

EC-135 Cave Creek, AZ (https://aviation-safety.net/wikibase/72681)
Forum: Rotorheads
17th Jul 2022, 16:04
Replies: 13
Views: 2,889
Posted By JimEli

More adults died of fentanyl overdoses...

More adults died of fentanyl overdoses (https://drive.google.com/file/d/1S0szR2Ua9v0Sr91YhDD7gPrXsDkHxDvP/view) in 2020 than COVID-19, motor vehicle accidents, cancer and suicide. A record ~108,000...
Forum: Rotorheads
16th Jul 2022, 23:36
Replies: 13
Views: 2,889
Posted By JimEli

Drug users in the U.S. spend on the order of $100...

Drug users in the U.S. spend on the order of $100 billion annually (in 2010 dollars) on just four drugs (https://www.rand.org/pubs/research_briefs/RB9770.html) (cocaine + crack, heroin, marijuana,...
Forum: Rotorheads
8th Jul 2022, 03:18
Replies: 35
Views: 7,608
Posted By JimEli

The list of other problems leads to a PIC in the...

The list of other problems leads to a PIC in the wrong seat. If the FAA can't enforce the other things, sitting in the wrong seat becomes accepted. The system is broken and is overlooking issues that...
Forum: Rotorheads
9th Jun 2022, 03:21
Replies: 16
Views: 1,273
Posted By JimEli

I have the 1997 UH-60L PIDS.

I have the 1997 UH-60L PIDS.
Forum: Rotorheads
4th Jun 2022, 19:26
Replies: 26
Views: 4,036
Posted By JimEli

NTSB prelim...

NTSB prelim (https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/105103/pdf) confirms pprune posted information. And nothing more.
Forum: Rotorheads
23rd May 2022, 00:18
Replies: 26
Views: 4,036
Posted By JimEli

Bend airport to Christmas Valley is only 57NM,...

Bend airport to Christmas Valley is only 57NM, and the airport is at 4320 MSL. All well within the performance envelope of a maximum GWT B3. Weather was 6000 SCT to clear, however, high winds in the...
Forum: Rotorheads
16th May 2022, 17:02
Replies: 63
Views: 10,719
Posted By JimEli

not necessarily the time to be looking for a...

not necessarily the time to be looking for a button. reminds me of Children of the Magenta Line.
Forum: Rotorheads
13th May 2022, 15:02
Replies: 42
Views: 6,981
Posted By JimEli

Crab, in fact the idea first entered my head...

Crab, in fact the idea first entered my head after seeing the Green pilots down the street.
Forum: Rotorheads
12th May 2022, 14:26
Replies: 42
Views: 6,981
Posted By JimEli

And low/high-side failures (etc.) and when...

And low/high-side failures (etc.) and when conditions do not allow OEI HOGE and in certain environments.

Just food for thought.

Before mocking, contemplate if it may have saved this aircraft...
Forum: Rotorheads
11th May 2022, 20:19
Replies: 42
Views: 6,981
Posted By JimEli

During a commercial airliner takeoff, the PF...

During a commercial airliner takeoff, the PF usually has his hands on the throttles while the FO backs him/her. Just saying.
Forum: Rotorheads
10th May 2022, 15:51
Replies: 42
Views: 6,981
Posted By JimEli

FWIW, The NATOPS procedure for Unusual...

FWIW,

The NATOPS procedure for Unusual Vibrations On Deck is singular in its response:

1. Collective — Lower.

2. PCLs — OFF.

3. Rotor brake — Apply as required.
Forum: Rotorheads
8th May 2022, 22:29
Replies: 42
Views: 6,981
Posted By JimEli

FWIW, in 2005 it was known "the MH-60S rotor...

FWIW, in 2005 it was known "the MH-60S rotor dampener lines are relatively soft and easily penetrated, which increases the risk of severe ground resonance problems on landing."
Forum: Rotorheads
7th May 2022, 15:17
Replies: 42
Views: 6,981
Posted By JimEli

FWIW ...

FWIW

https://cimg9.ibsrv.net/gimg/pprune.org-vbulletin/900x675/fold_c067002ae02c20c7de62baca07b085b819f57157.jpg
lead/lag at maximum
Forum: Rotorheads
5th May 2022, 21:38
Replies: 42
Views: 6,981
Posted By JimEli

Yes, electrical motors are used to fold the...

Yes, electrical motors are used to fold the blades. But it is my understanding to properly position/restrain the blade the dampers are hydraulically extended to the max-lead postion.
Forum: Rotorheads
5th May 2022, 07:25
Replies: 42
Views: 6,981
Posted By JimEli

automatic blade folding ...

automatic blade folding

https://cimg6.ibsrv.net/gimg/pprune.org-vbulletin/1200x798/sh60_917392ed6b1b02aeaaf94890ff79e9bb70263efa.jpg
Forum: Rotorheads
4th May 2022, 19:52
Replies: 63
Views: 10,719
Posted By JimEli

Spoken like someone who has never exceeded a...

Spoken like someone who has never exceeded a speed limit.
Forum: Rotorheads
2nd May 2022, 00:58
Replies: 63
Views: 10,719
Posted By JimEli

IMHO, the FAA, the operator and the pilot are...

IMHO, the FAA, the operator and the pilot are equally to blame.

1. On May 10, 2019 (260 days prior to the accident), the pilot performed two S-76 training flights with a contract training company....
Forum: Rotorheads
27th Apr 2022, 15:59
Replies: 25
Views: 3,008
Posted By JimEli

FWIW, Last I checked, I have no...

FWIW,



Last I checked, I have no control over aerodynamics, can’t preflight it, and I can’t find a thing about it in the FM.



I believe the 407 FM has a couple of emer procs that...
Forum: Rotorheads
26th Apr 2022, 23:32
Replies: 25
Views: 3,008
Posted By JimEli

Never denegrate another pilot for wanting to know...

Never denegrate another pilot for wanting to know more about his craft.
Forum: Rotorheads
21st Apr 2022, 02:15
Replies: 25
Views: 2,508
Posted By JimEli

Prouty, R., Helicopter Performance Stability, and...

Prouty, R., Helicopter Performance Stability, and Control, 1986.

On page 306, Prouty estimates the total equivalent flat plate area of an example UH-60 sized rotorcraft to be 19.3 ft-sq (zero...
Forum: Rotorheads
8th Apr 2022, 23:44
Replies: 196
Views: 15,074
Posted By JimEli

FWIW, as one who has made countless FR...

FWIW, as one who has made countless FR approaches, the 412 could hover OGE under the conditions of the video.

This is not VRS. It doesn’t even appear to be settling with power, unless one...
Forum: Rotorheads
8th Apr 2022, 14:39
Replies: 196
Views: 15,074
Posted By JimEli

transient droop recovery

transient droop recovery
Forum: Rotorheads
4th Apr 2022, 20:27
Replies: 25
Views: 2,508
Posted By JimEli

References: Filippone A., Flight Performance...

References:

Filippone A., Flight Performance of Fixed and Rotary Wing Aircraft, pages 346-350, 2006.
Yeo, H and Johnson, W., Performance Analysis of a Utility Helicopter with Standard and...
Forum: Rotorheads
1st Apr 2022, 23:08
Replies: 25
Views: 2,508
Posted By JimEli

If memory serves me correctly, 99% of the AW139...

If memory serves me correctly, 99% of the AW139 CG envelope is aft of the mast. Oddball.



The UH-60 Stabilator doesn't really enter into it. Like you said, reducing pitch attitude is the key....
Forum: Rotorheads
1st Apr 2022, 03:18
Replies: 25
Views: 2,508
Posted By JimEli

In most cases, an aft CG reduces the equivalent...

In most cases, an aft CG reduces the equivalent front plate drag area and should result in reduced power for level flight. For example, the UH-60 has ~30 sq. ft. area and a 10% change of the flat...
Forum: Rotorheads
28th Feb 2022, 00:14
Replies: 14
Views: 2,133
Posted By JimEli

What does the POH say?

What does the POH say?
Forum: Rotorheads
24th Feb 2022, 22:21
Replies: 41
Views: 8,802
Posted By JimEli

Mt. Hood maybe? 2002? USAF H60? Insufficeint...

Mt. Hood maybe? 2002? USAF H60? Insufficeint power to HOGE? No loss of visual, just needed more-better training interpreting the operator's manul performance data.
...
Showing results 1 to 35 of 324
 


 
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