posted on Feb, 23 2008 @ 03:19 PM
They're actually 19,000 which gives a total thrust rating of 76,000lbs. What's your point? The 747-400 uses either 4 PW4056 with 60,000lbs of
thrust, 4 PW4060s with 62,000lbs, 4 PW4062s with 56,750lbs, 4 RB-211-524G or 524H with 59-60,000lbs of thrust, 4 CF6-80C2B1F/C2B7F with 58,000 lbs of
thrust. At the low end it has 227,00lbs of thrust total. It has an MTOW of between 800,000 and 875,000lbs. That comes out to about 4lbs of weight
for every pound of thrust. The B-2 comes out to about 4.4lbs of weight for every pound of thrust. Does that mean that the 747 uses antigravity too?