USAFHummer From United States of America, joined May 2000, 10685 posts, RR: 53 Reply 9, posted (9 years 8 months 1 week 6 days 17 hours ago) and read 3021 times:
I think since some fractional and charter operators (hence a commercial aircraft) fly the Citation X we can safely count that in, and I believe it will take first place with its Mach .92 cruise...I wonder what Mmo is on the X?
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CitationJet From United States of America, joined Mar 2003, 2312 posts, RR: 3 Reply 12, posted (9 years 8 months 1 week 6 days 12 hours ago) and read 2836 times:
Mc (the cruise Mach) is an operational cruise Mach, while Mmo is the design cruise Mach. On the Citation X the Mmo and Mc are both the same, Mach 0.92 above 30,650 ft. Below that altitude the Vmo is 350 KCAS.
The Md (Mach dive speed) on the Citation X is Mach 0.99. This is to meet the 0.07 Mach increment between Mmo and Md for flutter clearance and upset maneuver certification.
During the flight flutter testing and envelope testing the Citation X broke Mach 1. It did it the first time on September 26, 1994. A T-38 was used as the chase aircraft.
EALSYS1 From United States of America, joined Jan 2001, 229 posts, RR: 13 Reply 13, posted (9 years 8 months 1 week 6 days 11 hours ago) and read 2776 times:
OK, Clear this one up please. I flew DFW-MIA last month and according to the in flight display, we were cruising mot of the flight at a ground speed of about 610 mph! I guess the pilot really wanted to get to MIA in a hurry. Is this reading accurate? Relevant?
NorthStarDC4M From Canada, joined Apr 2000, 2902 posts, RR: 39 Reply 17, posted (9 years 8 months 1 week 6 days 9 hours ago) and read 2573 times:
AIRLINERS.NET CREW CHAT OPERATOR
Are there any -50 DC-8's still tooling around.
One of them broke the sound barrier during predelivery testing for Air Canada many many moons ago.
Can we count the Citation X in this discussion also?
Actually it was a DC-8-40 for Canadian Pacific (entered service as CF-CPF).
And ill agree that the 747SP is the fastest airliner in service today. Current production aircraft, the 747-400 is probably the fastest, though Airbus seems convinced the A380 will be faster than the 744 in some of its media releases.
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