Re: Station wagon full of bits


H. Craig McKee (mckee@mitre.ARPA)
Mon, 30 Mar 87 11:48:26 EST


Phil asked, "What is the bandwidth of a 747 ..."

I talked to the Boeing folks here in DC. A B747-200F
(cargo config.) has: gross take-off wt. 416 tons
                      operating wt. 171
the difference being fuel and cargo wt. 245

Allowing 45 tons of fuel for 6 hours enroute plus reserve
leaves 200 tons of compact disks. According to Cerf,

100 disks equals 50 pounds equals 7.8*10**12 bits; therefore,
multiplying by 8,000,
800,000 disks - 200 tons - 6.2*10**16 bits
dividing by (6*3600) 21,600 seconds equals 2.9*10**12 bps.



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