"ttyymmnn" (ttyymmnn)
09/23/2013 at 16:19 • Filed to: Planelopnik
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"ttyymmnn" (ttyymmnn)
09/23/2013 at 16:19 • Filed to: Planelopnik | 1
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The tires on the Marine Corps’ jets had a so-called initial wear rate of 10 to 11 landings per tire during testing, [Joe DellaVedova, a spokesman for the Pentagon’s F-35 program office] said. That rate worsened during more recent testing, which includes a higher mix of conventional take-offs and landings, he said. However, the results have improved slightly since last month’s fielding of a temporary replacement tire with a thicker tread, he said.
The tires, which cost about $1,500 apiece, are made by Dunlop Aircraft Tyres Ltd., based in the United Kingdom, DellaVedova said. The company also made tires for the AV-8B Harrier jump jet, whose performance requirements are similar to those of the F-35B, he said.
Lockheed and Dunlop plan to begin delivering a redesigned product to the military by the end of the year, DellaVedova said. [Air Force Lt. Gen. Christopher] Bogdan . . . said the companies will have to cover the cost of the redesign. “I’m not paying a penny,” he said at the conference.
via !!!error: Indecipherable SUB-paragraph formatting!!!
Yowen - not necessarily not spaghetti and meatballs
> ttyymmnn
09/23/2013 at 16:38 |
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ttyymmnn
> Yowen - not necessarily not spaghetti and meatballs
09/23/2013 at 16:41 |
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Que?
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Yowen - not necessarily not spaghetti and meatballs
> ttyymmnn
09/23/2013 at 16:43 |
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hmm, it appears I have posted a broken image. It was of the guy in the Wire holding up a Dunlop Tennisball. Affectionately known as "Fuzzy Dunlop".
f86sabre
> ttyymmnn
09/23/2013 at 17:41 |
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Airplane tires are a bitch. I know from experience. They are largely hand made, using lower tech solutions than you would imaging and are prone to all kinds of things that can go wrong.
Are they making arrested landings with the planes? I would imagine that would be hell on a tire.
Fun facts: most airline tires can make it about 200-300 landings before they need to be removed. Tires need to be checked every 3 days for pressure as they can bleed enough to substantially impact sidewall strength. Sidewall thickness of a tire can be over an inch. Most tires have between 20-30 plies. Most are retreaded between 3-5 times before being discarded. The retred process is much different than what exists on trucks.
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ttyymmnn
> f86sabre
09/23/2013 at 17:50 |
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I don't think they're making arrested landings, at least not with the Marine version. I've seen some video of ops from USS Wasp, and they were doing rolling take offs, with the rear engine deflected downward about 45 degrees, and vertical landings. I wonder, though, if the tires are affected by the heat of vertical landing, when all the exhaust is pointed straight down.