How loud is the F-35?

All about the Pratt & Whitney F135 and the (cancelled) General Electric/Rolls-Royce F136
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spazsinbad

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Unread post01 May 2014, 22:31

Despite the banter and despite the new news about noise on a CVN/LHX etc. the USN has been working on ways to protect hearing and physical safety of personnel. What difference that makes I suspect will be significant, as indicated, to the people involved. Flight decks are noisy. Not many people get to see/hear aircraft land and takeoff metres from their job positions as the USN flight deck personnel experience in their daily routine work. The flight deck is a dangerous - and we can hear - a very noisy place of work. People involved have to wear their cranial protection gear at all appropriate times however, because for one thing, hearing damage is cumulative and any flight deck shrapnel/sharp edge damage may be permanent.
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
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Unread post01 May 2014, 23:32

Improved hearing protection around the ship is a long time coming. Note values in AB for aircraft other than F-35 (page down at link to NRAC graphic).

http://www.google.com/url?sa=i&rct=j&q= ... 9709906605

And this link to the full NRAC report --
http://www.google.com/url?sa=t&rct=j&q= ... WM&cad=rja
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spazsinbad

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Unread post01 May 2014, 23:52

NRAC graph from first 'quicksilver' URL pinched from my fotbucky account (not that I mind - that is why it is there and why there are a ton of PDFs about 'how to deck land and shite' on my web pages - see short URLs in my signature below).

This graphic would be elsewhere on the forum - I guess I should go search for those posts but whatever....

http://i98.photobucket.com/albums/l261/ ... pr2009.gif

Image
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
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Unread post02 May 2014, 00:02

Now that I have developed tinnitus AND earlier ongoing hearing loss I need a filter on my ear trumpet whilst 'What's up Doc' is more than just a shouting match these days.... From the quicklysliver PDF above here is some text:
NRAC Report on Jet Engine Noise Reduction April 2009

"...Conclusions [APRIL 2009]
>>Human Hearing Protection
• Significant progress has been made in hearing protection technology with pilot production hearing protection components which provide up to 43 dB attenuation being tested at sea

• There are inadequate data on hearing loss for Sailors/Marines correlated to an individual’s noise exposure environment

• Individualized sound-level dosimetry is needed to fully match hearing profiles to occupational assignment and noise source exposure.

>>Jet Engine Technology
• Predictive tools are now emerging with potential for more accurate assessment of jet engine noise reduction approaches

• Large reductions (>3-5 dB) in jet engine noise will only be possible if the investments are made in the research and experimentation to reduce jet engine source noise

• Should start now with design studies to define realistic noise requirements for the next generation tactical aircraft

Recommendations
• Find a senior DOD champion/advocate for jet aircraft noise reduction – USD(AT&L), ASN(RDA)

• Initiate a long term research program to obtain the needed understanding of the physics of jet noise – CNR

• Conduct a competitive design among the airframe prime contractors to start identifying the design space for noise reduction in tactical aircraft in order to help develop a noise KPP – NAE

• Augment the VAATE/ADVENT program to address noise reduction –DDR&E and COMNAVAIR

• Support the hearing protection roadmap and fund the procurement of needed improved hearing protection – N8

• Develop standards for acquiring engine noise data for tactical aircraft – COMNAVAIR and AFRL

• Expand the distribution of improved hearing protection beyond aviation personnel – N86/87

• Expand and diversify Navy medical research into physiological effects of noise – Chief, BuMed "

SOURCE: http://www.dtic.mil/cgi-bin/GetTRDoc?AD ... tTRDoc.pdf (1.5Mb)
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
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spazsinbad

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Unread post02 May 2014, 00:13

Lordy Lordy.... :devil: here are some 'swing low sweet chariot' earlier posts re dis noise mit grafx....

The quest for a quieter F-35 16 Jun 2011
viewtopic.php?f=56&t=15703&p=198790&hilit=NRAC#p198790

Good ole SWP found dat gem on 24 May 2010 here: What are the recorded dB levels for the F-35?
viewtopic.php?f=56&t=14055&p=175833&hilit=NRAC#p175833
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
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Unread post02 May 2014, 04:26

Some Growling Catapult Noise - turn youse Wolume up to ELEVEN! :devil: Celebrate youse hearing loss - which is cumulative! :drool:

RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
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Unread post02 May 2014, 05:23

I'm sorry couldn't hear you, what were you guys talking about - - - - -
I was just remembering that wonderful J57 with water .... aaah.

"A heavy weight KC-135A/Q using water injection was the loudest airplane in the USAF inventory ... At wet TRT, it generated up to 165 db!"

I would have loved the soft pitter of only 150 db :) :) :) You wimps !!!

Say what ??? Repeat that please... a little louder...

BP
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spazsinbad

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Unread post02 May 2014, 06:13

USE SIGN LANGUAGE (I ONLY KNOW AUSLAN) OR SPEAK VERY SLOWLY IN YOUSE YANK ACCENT! OK? OTHERWISE as was famously noted "I can't hear you" in dat movie.... Nearness is all... :shock:

Try standing next to the JBD with the aircraft in full pelt on the catapult. Report back if you survive. :devil:
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
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Unread post02 May 2014, 07:30

How Burlingtonians are going to deal with dat noiz:
F-35 Impact Reduction Plan Released 01 May 2014 Matt Austin

"COLCHESTER, Vt. - The Vermont Air National Guard released a report about how it plans to reduce the impact of the F-35s on the community and environment.

A 17-page report spells out what the guard plans to do during construction on the base in anticipation of the jets' arrival.

It also looks at the jets themselves. The report acknowledges the biggest issue will be the noise.

To reduce the noise impact, right now the guard says the plan to is keep doing what they're doing with the current F-16's, which includes changes to how the jets takeoff and land.

Since the F-35 program is so new, the report says when the jets arrive in Burlington in 2020 additional measures to lessen the noise impact will be looked into...."

http://www.mychamplainvalley.com/media/ ... l_2014.pdf (0.7Mb)

SOURCE: http://www.mychamplainvalley.com/story/ ... GL9sVzK0AA
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
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Unread post03 May 2014, 02:15

Back in olden tymes no mention of protecting your hearing in the danger zone.... although one may argue that commandment II may cover that perhaps.
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Unread post03 May 2014, 02:44

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spazsinbad

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Unread post03 May 2014, 03:08

I was thinking more along the lines of the ridiculous long ago clichéd and just nauseously replicated 'TopGun' Anthem. And being sarcastic to boot - what else? :doh:
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Unread post03 May 2014, 03:35

spazsinbad wrote:I was thinking more along the lines of the ridiculous long ago clichéd and just nauseously replicated 'TopGun' Anthem. And being sarcastic to boot - what else? :doh:
That's what's being referenced there (they even do a whole episode involving Kenny Loggins). You should check out the Archer series... serous hilarity should ensue for any cold-warrior.
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spazsinbad

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Unread post03 May 2014, 04:00

Fair enough. The world is a big place these days with the interbabble referencing everything under the sun. :doh: :drool:
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Unread post03 May 2014, 04:10

lookieloo wrote:
spazsinbad wrote:I was thinking more along the lines of the ridiculous long ago clichéd and just nauseously replicated 'TopGun' Anthem. And being sarcastic to boot - what else? :doh:
That's what's being referenced there (they even do a whole episode involving Kenny Loggins). You should check out the Archer series... serous hilarity should ensue for any cold-warrior.

"Danger Zone"
http://www.youtube.com/watch?v=siwpn14IE7E&feature=kp

...or the "Top Gun Anthem"?
http://www.youtube.com/watch?v=p2M7QwHnVXQ

(so sue me if I have both on my phone as part for the play list I commute with)
Einstein got it backward: one cannot prevent a war without preparing for it.

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