Date: 16 Oct 97 00:44:12 From: email@example.com (SHW) Organization: MindSpring Enterprises, Inc. References: 1 Followups: 1
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firstname.lastname@example.org (David Lesher) wrote: >I watched the PBS series on the 777. Of special interest was the >full-load rejected takeoff test. I missed the figures for the >weight [and ISTM they were for load, vice emptyweight+load] >but they said it was 9.7 million ft-lbs of hot brakes. I also saw the special and had a question, not about the units but the order of magnitude. The 707 has a limiting brake energy of 40 Million foot-lbs per brake. What doesn't make sense here is that the Trip-7 is roughly twice the weight of the 70. With modern carbon-fiber brake rotors and an extra set of wheels per truck how could the failure limit on the 777 be so low ?