01-10-2018, 08:11 PM
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Dazed and Confused
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Join Date: Mar 2005
Location: TN
Posts: 11,624
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Quote:
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Originally Posted by ghrocketman
The USAF version is not nearly as loud as an F-4 in full AB.
I would imagine the USMC version could be in the VTOL mode.
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I was not being literal. Both versions are very loud for a single engine fighter. They are much louder than the F-16's and F-22's that frequent the Lockheed facilities in Ft. Worth.
Quote:
Five independently prepared Air Force documents show that at most altitudes and speeds, the noise on the ground below the F-35 will be an average of 16 decibels louder than the loudest F-16 currently flying from D-M/TIA (a difference of roughly 60 times the physical energy & more than three times as loud perceptually).
1. The Elgin AFB Environmental Impact Statement (EIS) reports the F-35 at 500 mph was 121 db, & the F-16 was 97 db (a 24 db difference).
2. A joint empirical test by the AF & Lockheed reported the F-35 at 121 db at 1,000 ft, and 500 mph. While the F-16 at the same speed and height, was 114 db (a 7 db difference).
3. The Nellis EIS, reported the F-35 at minimum (cruising) power at 1,000 feet was 103 db, and the F16 at 89 db (a 14 db difference).
4. The Luke Air Force Base EIS, report landing estimates for the F-35, at normal military power (full throttle without afterburner) was 79 db, compared to the 66 db of the F-16 (a 13 db difference).
5. The Burlington Vermont EIS, reports that the F-35 produces 115 db at ground level, on take-off, while the F-16 produces 94 db (a 21 db difference).
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