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Search: Posts Made By: Droop Snoot
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23rd Oct 2020, 03:18
Replies: 9
Views: 1,776
Posted By Droop Snoot

Pilot DAR.... Thanks, I got a bit confused...

Pilot DAR....

Thanks, I got a bit confused because I saw the exemplar cracked part had been removed from the aircraft.

Just to develop the point about NDI... how severe is the failure mode? If...
23rd Oct 2020, 00:16
Replies: 9
Views: 1,776
Posted By Droop Snoot

Is there any consideration of modifying the...

Is there any consideration of modifying the relief to have one large radius instead of 2 smaller radii? This would considerably reduce the stress concentration factor. The surface should also be...
Forum: Rotorheads
24th Jul 2020, 17:38
Replies: 28
Views: 5,034
Posted By Droop Snoot

Sans… The failure mode that blakmax...

Sans…

The failure mode that blakmax describes is not addressed by the hot/wet environmental qualification testing you reference. The hydration mode is an adhesive failure mode at the metal/...
Forum: Rotorheads
21st Jul 2020, 19:13
Replies: 28
Views: 5,034
Posted By Droop Snoot

Some version of that idea has been applied to...

Some version of that idea has been applied to metal and composite blades as well! :ugh:
Forum: Rotorheads
21st Jul 2020, 19:10
Replies: 28
Views: 5,034
Posted By Droop Snoot

Film radiography (X-ray) is be used to verify...

Film radiography (X-ray) is be used to verify fiber orientation in a completed carbon fiber part, provided there is a representative radiopaque tracer present, such as fiberglass.

Radiography,...
Forum: Rotorheads
14th Jul 2020, 12:22
Replies: 118
Views: 20,049
Posted By Droop Snoot

In addition to directly addressing the...

In addition to directly addressing the discrepancy, "Conditional Inspections", in AMM Chapter 5, should be consulted during non routine maintenance. This data includes

hypothetical and known...
Forum: Rotorheads
3rd Jun 2020, 11:03
Replies: 18
Views: 3,163
Posted By Droop Snoot

In some cases they were very low... 3-4 rotor...

In some cases they were very low... 3-4 rotor diameters, and below the rooftops of adjacent buildings. And the crowd seems undeterred!

https://twitter.com/RobertDeNiroUS/status/1267645815134269441
Forum: Rotorheads
27th May 2020, 16:59
Replies: 17
Views: 3,314
Posted By Droop Snoot

It's remarkable.... “Accordingly the...

It's remarkable....

“Accordingly the lift/drag ratio was increased by about 36.91%”

... including the resolution of their wind tunnel tests!
Forum: Rotorheads
18th May 2020, 23:44
Replies: 147
Views: 52,959
Posted By Droop Snoot

JD... Are there any extraordinary procedures...

JD...

Are there any extraordinary procedures or precautions employed by pilots during an exercise like this, e.g. low altitude cruise flight, especially over water?

Would they likely be in a...
Forum: Rotorheads
14th May 2020, 13:34
Replies: 17
Views: 1,816
Posted By Droop Snoot

As you state, the rotor thrust is proportional to...

As you state, the rotor thrust is proportional to the steady blade lag angle. To produce more thrust, the collective pitch angle is increased, which demands more torque at the rotorhead, up to the...
Forum: Rotorheads
14th May 2020, 13:13
Replies: 147
Views: 52,959
Posted By Droop Snoot

The VH-92 model designation could be a little...

The VH-92 model designation could be a little misleading.

From a LM release:

"The VH-92A aircraft is based on Sikorsky’s successful and FAA-certified S-92A commercial aircraft, which recently...
Forum: Rotorheads
12th May 2020, 18:41
Replies: 17
Views: 1,816
Posted By Droop Snoot

As if Mg needs the least bit of encouragement to...

As if Mg needs the least bit of encouragement to combine with his friend O and return from whence they came!
Forum: Rotorheads
3rd Feb 2020, 17:00
Replies: 756
Views: 805,639
Posted By Droop Snoot

https://www.pprune.org/australia-new-zealand-pacif...

https://www.pprune.org/australia-new-zealand-pacific/629086-c130-down-ne-cooma-6.html#post10670047

Interesting explanation of online ADS-B data and how it can be accurately analyzed. I cannot...
Forum: Rotorheads
16th Oct 2019, 12:57
Replies: 44
Views: 7,294
Posted By Droop Snoot

Sultan (or other learned respondents)... ...

Sultan (or other learned respondents)...

Thanks for the input on speed requirements.

Can you weigh in on the FARA life cycle cost requirements?

I have never seen a calculation, but I imagine...
Forum: Rotorheads
5th Sep 2019, 20:33
Replies: 18
Views: 3,954
Posted By Droop Snoot

Red face VH-92A causes "discoloration" of South Lawn

https://www.nationaldefensemagazine.org/articles/2019/8/26/marine-one-replacement-preps-for-initial-operational-capability

GAO said:

“The lawn is a highly visible, size-constrained landing zone...
Forum: Rotorheads
24th Aug 2019, 02:35
Replies: 20
Views: 5,793
Posted By Droop Snoot

John... I recall seeing stills of the landing,...

John...
I recall seeing stills of the landing, but not sure I ever saw the video. Thanks for, as usual, adding plenty of meat to the bones of that story. I'm sure every development program has had...
Forum: Rotorheads
24th Aug 2019, 00:27
Replies: 20
Views: 5,793
Posted By Droop Snoot

A quick search reveals the UTTAS crashworthiness...

A quick search reveals the UTTAS crashworthiness requirement is a 42 ft/sec vertical sink rate.
The test case shown had an approximately 3 second drop time, which equates to 144 ft altitude, and 96...
Forum: Rotorheads
21st Aug 2019, 17:02
Replies: 25
Views: 6,091
Posted By Droop Snoot

Correct, and it is built in Poland by PZL.

Correct, and it is built in Poland by PZL.
16th Aug 2019, 12:56
Replies: 94
Views: 62,611
Posted By Droop Snoot

https://cimg4.ibsrv.net/gimg/pprune.org-vbulletin/...

https://cimg4.ibsrv.net/gimg/pprune.org-vbulletin/992x415/plane_crash_06_ht_jt_190815_hpmain_31x13_992_5ed26aa4f4c64798eba3f90cd4d080f6581c025a.jpgFrom CNN.com..."The jet crashed through a fence, the...
15th Aug 2019, 23:47
Replies: 94
Views: 62,611
Posted By Droop Snoot

Smile Please don't ask what NASCAR is.....

Please don't ask what NASCAR is.....
2nd Jul 2019, 13:01
Replies: 63
Views: 64,558
Posted By Droop Snoot

It's closer to 21 months, not 9 months... now...

It's closer to 21 months, not 9 months... now that's persistence!
Forum: Rotorheads
21st Jun 2019, 15:58
Replies: 34
Views: 21,658
Posted By Droop Snoot

Presumably the new inspection is being carried...

Presumably the new inspection is being carried out much closer to the initiation point, and at a higher resolution than the one previously in place, therefore a reduction in interval might be...
29th Apr 2019, 11:17
Replies: 5,120
Views: 10,487,905
Posted By Droop Snoot

If...

Yes.
No.

From the response of all involved, the system "requires" at least one crash to get substantive action. In this case, it took 2.
Forum: Rotorheads
15th Mar 2019, 00:25
Replies: 29
Views: 7,568
Posted By Droop Snoot

JD will provide the definitive answer, but my...

JD will provide the definitive answer, but my recollection is as follows. I don't believe the reason that circulated in the company at that time, but I'll provide it anyway!

It was said that SAC...
Forum: Rotorheads
10th Mar 2019, 13:29
Replies: 46
Views: 13,924
Posted By Droop Snoot

The brown coloration of the ground near the top...

The brown coloration of the ground near the top of the cabin section of the fuselage suggests the main rotor head was turning for a few seconds after the fuselage came to rest, excavating soil and...
Showing results 1 to 25 of 42
 


 
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