Subsonic Airliner sets speed record

Don't 744's cruise at mach 0.88? Or have they dialed that back now? I seem to recall reading somewhere that below 0.84 the plane actually burn more gas for a given distance as a result of the way the Mach waves form around the plane.. I have no idea if that's true or not
 
Now that's a Speedbird! ;)

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Tantalum said:
Don't 744's cruise at mach 0.88? Or have they dialed that back now? I seem to recall reading somewhere that below 0.84 the plane actually burn more gas for a given distance as a result of the way the Mach waves form around the plane.. I have no idea if that's true or not
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It had a peak groundspeed of 824mph. That is about Mach 1.07. :eek:
 
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Pilawt said:
Hefty tailwinds courtesy of the big storm hitting western Europe today.
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Yeah, it was messy; I watched BigJets live feed from Heathrow. More go-arounds than you could count.
 
smv said:
It had a peak groundspeed groundspeed of 824mph
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This highest GS I ever saw in something I was traveling in was 776 mph on a Northwest DC10 flight many many years ago from Boston to Amsterdam.. monster tailwind
 
During the hold at about 11,000 ft, GS varying by about 225kt. Diverted Frankfurt.

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