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  1. Wow, an entire article about noise and no math or science!

    Sound intensity is defined as the sound power per unit area. The usual context is the measurement of sound intensity in the air at a listener’s location.

    We usually measure sound intensity using the decibel scale.

    You can Google the terms sound intensity and decibel and learn a lot in 20-30 minutes.

    After you have the basics down, track down the F-35 EIS in question and go to the back where the data tables are. Read down the tables to see the transient noise levels for F-35 (measured in those pesky decibels). Take-off is the noisiest: it take 10 times the engine thrust power to take off than it does to land.

    You are looking for transient sound intensity values which are a function of noise level, background noise, distance to the acoustic sensor (your ear) and many other factors.

    Another way to do this is to book a flight to Chicago’s O’Hare Airport. Rent a car and drive to one of the residential neighborhoods outside the fenceline on either side of Runway 10L – 28R (the southernmost E-W runway) and hang around for a few hours.

    The F-35 noise at Burlington will sound like the sound of stone skipping over a pond in comparison.

  2. Here is some info regarding the noise.

    Low frequency noise, 20-200 Hz, and infrasound, 0-20 Hz, are the most health-damaging; they prevent children from learning, deprive people of restful sleep.

    The Air Force is refusing to do some landings, take-offs and maneuvers near the airport to demonstrate to the people within about a mile of the runway that all is OK and there is nothing to worry about….

    Europe is requiring that commercial planes are designed to be quieter. Boeing and Airbus are bragging about how much quieter their planes are, and here comes along the Air Force and make things worse. Insanity run amok.

    This is not about defending the US. This is about federal money coming to Vermont to fund operations and maintenance jobs in the Greater Burlington Area. That is why government leaders Leahy, Sanders, Welch, etc., are for it.

    Those planes need not be in Burlington, Vermont, to defend the US. They should be in forward bases, such as northern Maine, to defend the US from any enemy fighters coming from Europe.

    Typical rural nighttime ambient noise is 20-40 dBA and urban residential nighttime noise is 58-62 dBA. Higher noise levels adversely impact restful sleep of people; restful sleep is a basic requirement for good mental and physical health.

    Doubling the sound pressure level, SPL, increases the dB instrument reading by 6 dB.
    For example: If at 800 uPa (micropascal) the SPL = 20 log (800/20) = 32 dB, at 1600 uPa it is 38 dB, and at 3200 uPa it is 44 dB, where 20 micropascal is the lowest SPL the human ear can sense, it is used as the reference pressure.
    http://www.osha.gov/dts/osta/otm/noise/health_effects/soundpropagation.html

    The increase in SPL = 115 dBA (F-35) – 94 dBA (F-16) = 21 dBA. This appears to be an innocent number, but it is anything but.

    A 6 dBA increase means a doubling of SPL
    A 12 dBA increase means a quadrupling of SPL
    An 18 dBA increase means 8 times SPL
    24 dBA is 16 times; 30 dBA is 32 times; 36 dBA is 64 times; 42 dBA is 128 times, 48 dBA is 256 times, 54 dBA is 512 times.

    A nighttime fly-over of an F-35 would have a 115 dBA – 60 dBA (nighttime residential) = 55 dBA greater sound; such a sound increase is sure to wake up everyone, except the dead.

    A nighttime fly-over of an F-16 would have a 94 dBA – 60 dBA (nighttime residential) = 34 dBA greater sound; residents near the end of the runway are barely tolerating such a sound increase.

    The F-35 sound will be 21 dBA greater than of the F-16, which will be perceived by residents as being about 7-10 times louder.

    http://vtdigger.org/2012/06/17/leas-burlington-free-press-got-it-right-on-f-35-sound-level/

    http://vtdigger.org/2012/06/19/undecided-on-f-35s-two-communities-want-more-questions-answered/#comment-36539

  3. Pete,

    “The F-35 noise at Burlington will sound like the sound of stone skipping over a pond in comparison.”

    Your conclusion appears to be based not on math and science, but on something else.

    I was at the end of a runway with F-16s taking off and the wave of noise is EAR-HURTING LOUD, i.e., well above 110 dBA.

    Here is some math and science:

    A nighttime fly-over of an F-35 would have a 115 dBA – 60 dBA (recommended nighttime residential) = 55 dBA greater sound; such a sound increase is sure to wake up everyone, except the dead.

    A nighttime fly-over of an F-16 would have a 94 dBA – 60 dBA (recommended nighttime residential) = 34 dBA greater sound;

    - residents near the end of the runway are barely tolerating such a sound increase.
    - many houses have been bought by the city and the people relocated.

    The F-35 sound will be 21 dBA greater than of the F-16, which will be perceived by residents as being about 7-10 times louder. See below table.

    A 6 dBA increase means a doubling of sound pressure level, SPL
    A 12 dBA increase means a quadrupling of SPL
    An 18 dBA increase means 8 times SPL
    24 dBA is 16 times; 30 dBA is 32 times; 36 dBA is 64 times; 42 dBA is 128 times, 48 dBA is 256 times, 54 dBA is 512 times.

    For further information, please read this article:
    http://theenergycollective.com/willem-post/84293/wind-turbine-noise-and-air-pressure-pulses

  4. I understand that after attending last night’s meeting John MacGovern, Republican candidate for US Senate, held a press conference today opposing the F-35′s.

    http://www.boston.com/news/local/vermont/2012/10/18/macgovern-doesn-want-planes-airport/HAXoeVriLLKlHmioG85lON/story.html

    1. Jessica,

      Here is Sanders’ take:

      “The F-35, whether one may like it or not, is the plane of choice not only for the U.S. Air Force, but for the Navy, Marines and much of NATO,” Sanders said in a statement issued by his Washington office. “If the F-35 ends up not being located here, it will end up at a National Guard base in Florida or South Carolina. I would rather it be here.”

      This an inappropriate statement not addressing the issues raised by the people near the airport.

      A much larger area and many more households (about 2,400, according to an Air Force study, equivalent to about 7,000 people) will be adversely impacted and disrupted by the noise of the F-35 because it is MUCH LOUDER than the F-16.

      How much louder is explained below:

      http://vtdigger.org/2012/06/17/leas-burlington-free-press-got-it-right-on-f-35-sound-level/

      http://vtdigger.org/2012/06/19/undecided-on-f-35s-two-communities-want-more-questions-answered/#comment-36539

      The Air Force is refusing to do some landings, take-offs and maneuvers near the airport to demonstrate to the people within about a mile of the runway that all is OK and there is nothing to worry about….

      Europe is requiring that commercial planes are designed to be quieter. Boeing and Airbus are bragging about how much quieter their planes are, and here comes along Bernie, et al, and the Air Force and make matters worse. Insanity run amok.

      This is not about defending the US. This is about federal money coming to Vermont to fund operations and maintenance jobs in the Greater Burlington Area. That is why government leaders Leahy, Sanders, Welch, Weinberg, Shumlin, etc., are for it.

      Those planes should not be in Burlington, Vermont, to defend the US. They should be in forward bases, such as northern Maine, to defend the US from any enemy fighters coming from Europe.

      The cost of relocating these families into new housing would be about $200,000/house, including moving expenses, or about $480 million. During the period up to their relocation (many years of waiting time) their lives would be miserable. Does Bernie really care for these people, or is it just a front to get reelected?

      Typical rural nighttime ambient noise is 20-40 dBA and urban residential nighttime noise is 58-62 dBA. Higher noise levels adversely impact restful sleep of people; restful sleep is a basic requirement for good mental and physical health.

      Doubling the sound pressure level, SPL, increases the dB instrument reading by 6 dB.
      For example: If at 800 uPa (micropascal) the SPL = 20 log (800/20) = 32 dB, at 1600 uPa it is 38 dB, and at 3200 uPa it is 44 dB, where 20 micropascal is the lowest SPL the human ear can sense, it is used as the reference pressure.
      http://www.osha.gov/dts/osta/otm/noise/health_effects/soundpropagation.html

      The increase in SPL = 115 dBA (F-35) – 94 dBA (F-16) = 21 dBA. This appears to be an innocent number, but it is anything but.

      A 6 dBA increase means a doubling of SPL
      A 12 dBA increase means a quadrupling of SPL
      An 18 dBA increase means 8 times SPL
      24 dBA is 16 times; 30 dBA is 32 times; 36 dBA is 64 times; 42 dBA is 128 times, 48 dBA is 256 times, 54 dBA is 512 times.

      A nighttime take-off/fly-over of an F-35 would have a 115 dBA – 60 dBA (recommended nighttime residential) = 55 dBA greater sound; such a sound increase is sure to wake up everyone, except the dead.

      A nighttime take-off/fly-over of an F-16 would have a 94 dBA – 60 dBA (recommended nighttime residential) = 34 dBA greater sound.
      - many residents near the end of the runway are barely tolerating such a sound increase,
      - many residents already had their houses bought by the City.

      The noise of the F-35 will be 21 dBA greater than of the F-16, which will be perceived by residents as being about 7-10 times LOUDER.

  5. What we heard on Wednesday evening at Saint Michaels College boils down to who you want to believe and trust. The representatives of the Lake Champlain Chamber of Commerce and the Greater Burlington Industrial Corporation repeatedly said believe and trust Senators Leahy and Sanders, Congressman Welch, and Governor Shumlin as they have carefully reviewed all aspects of the F-35 and they support the plane coming to Vermont. The opponents of the F-35 coming to Burlington cited in great detail the Air Force’s draft Environmental Impact Statement (dEIS). They suggested we should trust and believe that the Air Force knew what they were doing when they set forth a long list of facts in the dEIS. Who should we believe? Who should we trust? Should we believe and trust the political rhetoric of our politicians or should we believe and trust the facts set forth by the Air Force in the dEIS? The question is not about noise, not about real estate values, not about supporting VTANG, it is about whom do we trust and believe, the Air Force or the politicians?

  6. George Cross has it right. Bernie’s argument is with the Air Force.

    The FAA manual on airport noise says that noise reduction insulation is acceptable for schools and churches but not for residential. The only solution for residential is to demolish homes in the noise zone. This explains why the airport is spending $40 million to purchase and demolish 200 homes in South Burlington. Bernie’s statement says that by working closely with neighbors the Guard can mitigate the noise. Despite working closely the Guard was obviously not able to mitigate the F-16 noise to save those affordable homes. In fact, the Guard substantially increased noise level. Here is why: metal fatigue analysis showed that adding weight to the wings would extend plane lifetime. Thus the wing-mounted fuel tanks. Adding external fuel tanks required more power on takeoff. Thus, the afterburner and increased noise. Thus, the guard demonstrated what “working closely with neighbors” really means.

    The Air Force Times reported on September 19 that the Air Force will be upgrading the F-16-C fleet so it will remain in service past 2030. Bernie wants Burlington to be first to get the F-35 but he does not explain why Burlington has to be first when the F-16-C will be upgraded and will remain in service for a long time.

    The Air Force reports that other missions for the Vermont Air National Guard are available. Bernie says not. Does Bernie know more than the Air Force about whether other missions are available?

    A closer look at the 1100 jobs: The Air Force draft EIS states that 730 of them are “traditional guardsman” who generally hold fulltime jobs outside the Air National Guard and train only one weekend a month and two additional weeks per year. Information in the draft EIS indicates that these traditional guardsman are paid an average of only $3787 per year for their service. Supporting the Vermont guard is one thing. Overstating the worst-case economic effect is another.

    Bernie’s argument is with the Air Force, the Guard, and with the FAA.

  7. Tom Torti and Frank Cioffi remind me of something the muckraker and writer Upton Sinclair once observed: “It is difficult to get a man to understand something, when his salary depends on his not understanding it.”

  8. War and killing should not be a jobs program. There are some things that are even more important than the economy – the lives of those we kill.
    Vermont R/Ds never met a weapon system they didn’t like… except for one republican.

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