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Fastest Comercial Jet  
User currently offlineAIRNZsaab340 From , joined Dec 1969, posts, RR:
Posted (12 years 4 months 1 day 16 hours ago) and read 1705 times:

What would be the fastest comercial jet at the moment.


28 replies: All unread, showing first 25:
 
User currently offlineATA L1011 From United States of America, joined Feb 2001, 1378 posts, RR: 6
Reply 1, posted (12 years 4 months 1 day 16 hours ago) and read 1650 times:

Concorde


Treat others as you expect to be treated!
User currently offlineAIRNZsaab340 From , joined Dec 1969, posts, RR:
Reply 2, posted (12 years 4 months 1 day 16 hours ago) and read 1640 times:

Sorry anything but supersonic jets.

User currently offlineKAUSpilot From United States of America, joined Jan 2002, 1958 posts, RR: 33
Reply 3, posted (12 years 4 months 1 day 16 hours ago) and read 1634 times:

I think the 747's and old DC-8's cruise the fastest.

User currently offlineATA L1011 From United States of America, joined Feb 2001, 1378 posts, RR: 6
Reply 4, posted (12 years 4 months 1 day 16 hours ago) and read 1616 times:

L-1011's,747's and DC-8's. Ihave old timetables and these 3 consistently covered rte's in shorter time than when other aircraft flew the same rte's.


Treat others as you expect to be treated!
User currently offlineZeus01 From United States of America, joined May 2001, 744 posts, RR: 2
Reply 5, posted (12 years 4 months 1 day 16 hours ago) and read 1607 times:

Id put money on it that newer jets can go muchhhhhhhh faster, but it isn't economical for 747 to operate at over 565 mph, which i belive is mach .81


User currently offlineHurricane From United States of America, joined Feb 2002, 1443 posts, RR: 1
Reply 6, posted (12 years 4 months 1 day 16 hours ago) and read 1587 times:

From the Boeing website: the 747 continues to be the world's fastest subsonic jetliner, cruising at Mach .85 -- or 85 percent of the speed of sound

User currently offlineDripstick From Canada, joined Dec 2001, 2364 posts, RR: 21
Reply 7, posted (12 years 4 months 1 day 15 hours ago) and read 1581 times:

I don't know about that Zeus01.

The older jets I think were quite fast, such as the DC-8, even the B727.

Big turbo-fan engines on fat-bodied jets create a good amount of drag.

I could be wrong though.



What's another word for thesaurus?
User currently offlineEA CO AS From United States of America, joined Nov 2001, 13510 posts, RR: 62
Reply 8, posted (12 years 4 months 1 day 15 hours ago) and read 1564 times:
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Speaking of subsonic jets, the fastest are:

Business jets: Cessna Citation X M0.92 cruise

Commercial jets: Boeing 747-400 M0.855 cruise



"In this present crisis, government is not the solution to our problem - government IS the problem." - Ronald Reagan
User currently offlineTimz From United States of America, joined Sep 1999, 6781 posts, RR: 7
Reply 9, posted (12 years 4 months 1 day 15 hours ago) and read 1545 times:

I suspect if you compare 747 schedules with DC-8/707s that were flying the same route at the same time the 747 will usually be at least as fast. Maybe the old jets could cruise at 0.84-0.86, but they usually didn't.

User currently offlineIMissPiedmont From United States of America, joined May 2001, 6278 posts, RR: 34
Reply 10, posted (12 years 4 months 1 day 15 hours ago) and read 1540 times:

The 747 is still the fastest. The hump actually produces lifr which reduces drag. The Convair 990 was faster, the DC-8 could not keep up with the 747 with a full load.


Quit calling an airport ramp "Tarmac" and a taxiway "runway".
User currently offlineYoungDon From United States of America, joined May 2001, 394 posts, RR: 0
Reply 11, posted (12 years 4 months 1 day 15 hours ago) and read 1527 times:

The CV-880's and 990's were the fastest, also the Hawker Siddeley Trident, then probably the DC8's or 727's.

User currently offlineNWA742 From , joined Dec 1969, posts, RR:
Reply 12, posted (12 years 4 months 1 day 14 hours ago) and read 1520 times:

Zeus01,

Actually the 747 cruises very economically at MO.85, that is it's designed cruise speed.


User currently offlineSleekjet From United States of America, joined Jul 2001, 2046 posts, RR: 22
Reply 13, posted (12 years 4 months 1 day 14 hours ago) and read 1520 times:

Is there a solid reason why we are stuck in the 500-600 mph range? Is this a mythical barrier (like the 4-minute mile) or an engineering barrier or an economic barrier?


II Cor. 4:17-18
User currently offlineArtsyman From United States of America, joined Feb 2001, 4745 posts, RR: 34
Reply 14, posted (12 years 4 months 1 day 14 hours ago) and read 1498 times:

Is there a solid reason why we are stuck in the 500-600 mph range? Is this a mythical barrier (like the 4-minute mile) or an engineering barrier or an economic barrier?

I am not sure about this, the last few flights I took across the pond in a C0 777 were 703 mph for a lot of the flight, although I am sure the winds helped

Jer


User currently offlineMilesrich From United States of America, joined Jul 2003, 1989 posts, RR: 6
Reply 15, posted (12 years 4 months 1 day 13 hours ago) and read 1477 times:

The 707 and 720 were faster than the DC-8's. In fact, Pan Am pilots who flew both referred to the Eight as the DC-Late. The 990 never lived up to its projected cruising speed.

User currently offlineHigh_flyr69 From Australia, joined Apr 2001, 510 posts, RR: 0
Reply 16, posted (12 years 4 months 1 day 13 hours ago) and read 1462 times:

hey peeps i just checked it up in a book the fastes is the 727 (964kms)then the Ilyushin 86(950kms) then the MD-11(930kms)
hope that answers all ur question i think it goes to show back then things were made for speed Big grin:D:D:D:D
thats why the MD-11 is my favourite Big grin



Diplomacy is the art of saying 'Nice Doggy' until you find the shot gun
User currently offlineKonstantinos From Greece, joined Jun 2001, 389 posts, RR: 0
Reply 17, posted (12 years 4 months 22 hours ago) and read 1394 times:

The TU-154

Click for large version
Click here for full size photo!

Photo © Johan Ljungdahl



User currently offlineHurricane From United States of America, joined Feb 2002, 1443 posts, RR: 1
Reply 18, posted (12 years 4 months 22 hours ago) and read 1380 times:

All I can say is, is that the Boeing website doesn't lie. I'll say it again: (From Boeing.com) "the 747 continues to be the world's fastest subsonic jetliner, cruising at Mach .85 -- or 85 percent of the speed of sound," which means it is faster than any commercial aircraft in service today, which includes the TU-154, the MD-11, the 727, and the IL-86, not to mention DC-8s still in cargo operation...

User currently offlineQatar From , joined Dec 1969, posts, RR:
Reply 19, posted (12 years 4 months 22 hours ago) and read 1371 times:

The A380 would be faster @0.89 Mach than the 747.

User currently offlineDutchjet From Netherlands, joined Oct 2000, 7864 posts, RR: 57
Reply 20, posted (12 years 4 months 22 hours ago) and read 1365 times:

Fastest jet at the moment........747-400. The A380 is not yet in service nor has it flown.

What is interesting is that with the introduction of long-range twins, flights actually got longer! The introduction of the 767 and A310 (replacing older widebodies) on trasatlantic flights added 30 to 60 minutes of flying time depending on the route.


User currently offlineHartsfieldboy From United States of America, joined Sep 2001, 552 posts, RR: 1
Reply 21, posted (12 years 4 months 21 hours ago) and read 1338 times:

>>Is there a solid reason why we are stuck in the 500-600 mph range? Is this a mythical barrier (like the 4-minute mile) or an engineering barrier or an economic barrier?<<

Four words: Sonic, Boom, People, Bitching



User currently offlineMandargb From United States of America, joined Mar 2001, 195 posts, RR: 0
Reply 22, posted (12 years 4 months 20 hours ago) and read 1327 times:

Okey look the data on this .net

Max Cruising Speed

707-120B: 545 Kts

747-SP: 540 Kts

DC-8-60: 521 Kts



User currently offlineWoodsboy From United States of America, joined Mar 2000, 1029 posts, RR: 3
Reply 23, posted (12 years 4 months 20 hours ago) and read 1326 times:

I think part of why older jets were faster, especially the first generation 707s, DC-8s, 727s, VC-10s etc.....was because of the engines. Those old military derived turbojets were made for speed and the early turbofans with their low/no bypass ratio made them quite fast as well. New high bypass ration turbofans are extremely economical in comparison to turbojets and 1st generation turbofans but they are not efficient to operate at higher speeds due to their high by-pass ratio of air that does not pass through the combusion chanber. Perhaps I should not say "not efficient at high speeds", rather, the faster you go, you need less air bypassing the combustion chamber and those big mouthed engines on 777s (and others) just arent designed for super fast cruise, they are designed for super economical cruise.

We have to remember that a DC-8 was the only subsonic commercial airliner to officially reach a bit beyond mach-1 in a shallow dive back in the 70s. I would guess that the "Vomic Comet" that the USAF and Nasa uses for weightless training may reach mach-1 during their dives????

Another interesting thing to point out is to compare the performance of a 767-200/300ER Transatlantic with a headwind to a tri-jet or quad. I remember in March of 2000 coming from AMS-ATL on a Delta 767-300ER, I watched out the window as just about every other airliner passed us up at different altitudes......BA 747-400, Swissair MD-11, Virgin 747-200, FedEx MD-11 while we lumbered along at something like 405mph accoring to the display, with 90kt headwinds..........adds at least an hour to the flight!


User currently offlineRj777 From United States of America, joined Dec 2000, 1785 posts, RR: 2
Reply 24, posted (12 years 4 months 19 hours ago) and read 1294 times:

Why don't we have some planes race and find out?!


25 Racers22 : The reason why we are stuck in the 500-600 mph range is because of the sonic boom. Contrary to popular belief, an object going faster than the speed o
26 ATA L1011 : Yes the twins just dont fly as fast as the 3 engined or 4 engined jets.
27 777kicksass : Is it possible to exeed mach 1 ground speed but stay subsonic in comparison to the moving air? I suppose one hell of a tailwind would be required!!
28 Post contains images RayChuang : Racers22, Looks like your comment will soon be rendered obselete. This is because aerodynamicists have discovered a major breakthrough that revealed t
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