Supersonic airliner inching towards reality

Page 2 - Seeking answers? Join the AnandTech community: where nearly half-a-million members share solutions and discuss the latest tech.

chubbyfatazn

Golden Member
Oct 14, 2006
1,617
35
91
seems like they've taken that into account

Boom's supersonic airliner is designed for routes up to 10,357 miles (9,000 nm or 16,668 km). On routes longer than 5,179 miles (4,500 nm or 8,334 km), the aircraft will need a simple tech stop to refuel. The tech stop will take less than an hour, and passengers will not need to deplane or even wake up. Tech stop durations are included in all of our time estimates for flights over 4,500 nm.

I figured when you said "4500 nm is just enough range to go from NRT to SFO" that you meant nonstop.

I don't get how it can be "designed for routes up to 9,000 nm" yet have a hard stop at 4500nm. I can take a puny Cessna 172, make it fit enough for Trump's standards ("standards"), and fly it from SFO-NRT too... but with like 93 stops in between. Unless by "designed for" they meant the cabin/interior/soft product.

Wonder if Japan Airlines is looking at JFK flights with this since you can fly supersonic over parts of rural northern Canada. Could do what BA does and have the passengers clear customs at Anchorage (or wherever the tech stop is).
 

GagHalfrunt

Lifer
Apr 19, 2001
25,297
2,001
126
Sure but they don't run planes with first class only for a reason. A number of business or first class only flights and airlines have been tried and failed over the years. The two biggest drawbacks of the Concorde was low passenger count and fuel use. They need to address both for it to be successful.

Are you being deliberately obtuse or do you just not get it? The Concorde operated for more than 30 years. There is certainly a market for high dollar fast flights on certain routes like London or Paris to NYC or Toyko to San Francisco or Los Angeles. The plane carries about half the passengers of the Concorde, so there should be plenty of fannies for the seats. And the Concorde was an old design with terrible fuel efficiency. Using better aerodynamics, new composites for lighter weight and more efficient engines fuel burn per passenger is expected to be on par with a normal subsonic airliner. More burn per hour, fewer hours in the air. The deficiencies of the Concorde are the entire raison d'être for the project. The whole thing is designed from square one to address both.
 

ElFenix

Elite Member
Super Moderator
Mar 20, 2000
102,425
8,388
126
I figured when you said "4500 nm is just enough range to go from NRT to SFO" that you meant nonstop.
i take their blurb about refuelling for airport pairs further than 4500 nm to mean that it can non stop any airport pairs within 4500 nm and have whatever margin is necessary to be safe on that route.
 

GagHalfrunt

Lifer
Apr 19, 2001
25,297
2,001
126
i take their blurb about refuelling for airport pairs further than 4500 nm to mean that it can non stop any airport pairs within 4500 nm and have whatever margin is necessary to be safe on that route.

Yes. And that number is not an accident. Tokyo to major west coast USA cities is just under 4500nm. San Francisco is 4471 and Seattle is 4200 or so. Those are the routes the plane is designed to handle, so they're absolutely going to be able to do 4500nm with the safety margins that the law dictates. Nobody is building a supersonic jet that can't serve the 3 or 4 biggest routes nonstop.
 

Darwin333

Lifer
Dec 11, 2006
19,946
2,329
126
Are you being deliberately obtuse or do you just not get it? The Concorde operated for more than 30 years. There is certainly a market for high dollar fast flights on certain routes like London or Paris to NYC or Toyko to San Francisco or Los Angeles. The plane carries about half the passengers of the Concorde, so there should be plenty of fannies for the seats. And the Concorde was an old design with terrible fuel efficiency. Using better aerodynamics, new composites for lighter weight and more efficient engines fuel burn per passenger is expected to be on par with a normal subsonic airliner. More burn per hour, fewer hours in the air. The deficiencies of the Concorde are the entire raison d'être for the project. The whole thing is designed from square one to address both.

From their literature they should be able to sell seats for roughly the same price as business class seats for the same route and wide body planes have roughly the same number of business class seats as the X1-B. Even if it's a 25-35% markup they shouldn't have an issue filling it up at all and they can potentially fly the route almost double the number of times in a day. As far as the sonic boom they claim that it is 30 times less than the Concorde.
 

KillerCharlie

Diamond Member
Aug 21, 2005
3,691
68
91
Using better aerodynamics, new composites for lighter weight and more efficient engines fuel burn per passenger is expected to be on par with a normal subsonic airliner.

This is not true, and it will never be true.

The physics of drag will always make travel beyond near-sonic speeds more expensive.

I am an aerodynamicist at a very large aerospace company. I know people working at Boom and Aurora Flight Sciences. My current co-workers do supersonic transport and low-boom work with NASA and JAXA. I know how this stuff works.
 
Reactions: Thunder 57

Darwin333

Lifer
Dec 11, 2006
19,946
2,329
126
This is not true, and it will never be true.

The physics of drag will always make travel beyond near-sonic speeds more expensive.

I am an aerodynamicist at a very large aerospace company. I know people working at Boom and Aurora Flight Sciences. My current co-workers do supersonic transport and low-boom work with NASA and JAXA. I know how this stuff works.

They are speaking of upgraded seats not cattle class.
 

tynopik

Diamond Member
Aug 10, 2004
5,245
500
126
This is not true, and it will never be true.

The physics of drag will always make travel beyond near-sonic speeds more expensive.

unless you go out of the atmosphere

boo yah!

(or just design it so it has a negative cd)
 
Last edited:

Skunk-Works

Senior member
Jun 29, 2016
983
328
91
Sonic booms can be controlled. You just throttle back under mach 1 several 100 miles away from the main land. You could throttle back to mach .90 and no one would hear a thing.
 

Exterous

Super Moderator
Jun 20, 2006
20,429
3,533
126
Are you being deliberately obtuse or do you just not get it? The Concorde operated for more than 30 years. There is certainly a market for high dollar fast flights on certain routes like London or Paris to NYC or Toyko to San Francisco or Los Angeles. The plane carries about half the passengers of the Concorde, so there should be plenty of fannies for the seats. And the Concorde was an old design with terrible fuel efficiency.

I think we can both agree that aviation has changed more than a little bit in 30 years. The current trend is towards densification and in a big way. Airlines are shrinking premium class seat numbers to get more people jammed into economy. So while people like to oh and ah over fancy first class products many airlines have fewer premium seat options. Delta reduced them by 25% on their new 777 orders. United cut out first class on their 777s. AA reduced business class for their new A350s and 787-8s and -9s. Supposedly their 777-2 and 777-3 planes will get a refit with fewer premium seats. Even foreign airlines like British Airways, Cathay, Singapore and Qantas are reducing premium seating and compacting economy seats (or announced they will soon).

The market for routes like NYC to London or Paris for premium only flights is incredibly weak as evidenced by the failure of Silverjet, Eos and Maxjet. La Compagnie suspended its JFK-LHR route and BA's own measly 32 seat premium only flight can barely manage to keep its remaining spot after its original service schedule was slashed due to lack of demand. Since these will likely operate from capacity controlled slots like JFK or LAX that means that for every flight operated by a Boom supersonic aircraft there is a flight that cannot be operated by a high density plane compounding the problem. Sure they say they can do it for the same price as business class but, assuming they are even right, are we talking the relatively frequent ~$2k discount J fares or $6k full fares? My guess is closer to the $6k fares. So you're really hoping that enough businessmen just have to be there in a short time for the meeting for this to work and that a few hours, skype or video conference will kill the deal. Even if a very few select markets work to get the plane order price down you need decent number of orders for it to make sense.

Of course this is all assuming they can manage the incredibly complex certification and review environment that is air travel. There is always a chance they'll make it but the odds are stacked heavily against them
 

NetWareHead

THAT guy
Aug 10, 2002
5,854
154
106
Are you being deliberately obtuse or do you just not get it? The Concorde operated for more than 30 years. There is certainly a market for high dollar fast flights on certain routes like London or Paris to NYC or Toyko to San Francisco or Los Angeles. The plane carries about half the passengers of the Concorde, so there should be plenty of fannies for the seats. And the Concorde was an old design with terrible fuel efficiency. Using better aerodynamics, new composites for lighter weight and more efficient engines fuel burn per passenger is expected to be on par with a normal subsonic airliner. More burn per hour, fewer hours in the air. The deficiencies of the Concorde are the entire raison d'être for the project. The whole thing is designed from square one to address both.


This bears mentioning here if we are going to discuss Concorde's costs. From wikipedia:

The original program cost estimate of £70 million met huge overruns and delays, with the program eventually costing £1.3 billion. It was this extreme cost that became the main factor in the production run being much smaller than anticipated. Another major factor impacting the viability of all SST programs was in how supersonic route options were eventually limited to ocean-crossing only to prevent sonic boom disturbance on populated areas. With only 7 airframes each being operated by the British and French, the per-unit cost were impossible to recoup, so the French and British governments absorbed the airframe and development costs. British Airways and Air France were able to operate Concorde at a profit, in spite of very high maintenance costs, because of this steep government subsidy. British Airways paid £1 per aircraft, so its entire Concorde fleet cost the airline £7.
 

madoka

Diamond Member
Jun 22, 2004
4,344
712
121
Sure they say they can do it for the same price as business class but, assuming they are even right, are we talking the relatively frequent ~$2k discount J fares or $6k full fares? My guess is closer to the $6k fares. So you're really hoping that enough businessmen just have to be there in a short time for the meeting for this to work and that a few hours, skype or video conference will kill the deal.

Yeah, it will certainly be difficult for them to pull off. The supersonic flight is about a 5 hour time savings over conventional, so they'd have to price it where the cost doesn't exceed the time savings for most customers.
 

IronWing

No Lifer
Jul 20, 2001
69,525
27,827
136
Yeah, it will certainly be difficult for them to pull off. The supersonic flight is about a 5 hour time savings over conventional, so they'd have to price it where the cost doesn't exceed the time savings for most customers.
Pretty much limits it to ATOTers. Maybe we can help pick out the color scheme for the cabin.
 

Darwin333

Lifer
Dec 11, 2006
19,946
2,329
126
The market for routes like NYC to London or Paris for premium only flights is incredibly weak as evidenced by the failure of Silverjet, Eos and Maxjet. La Compagnie suspended its JFK-LHR route and BA's own measly 32 seat premium only flight can barely manage to keep its remaining spot after its original service schedule was slashed due to lack of demand. Since these will likely operate from capacity controlled slots like JFK or LAX that means that for every flight operated by a Boom supersonic aircraft there is a flight that cannot be operated by a high density plane compounding the problem. Sure they say they can do it for the same price as business class but, assuming they are even right, are we talking the relatively frequent ~$2k discount J fares or $6k full fares? My guess is closer to the $6k fares. So you're really hoping that enough businessmen just have to be there in a short time for the meeting for this to work and that a few hours, skype or video conference will kill the deal. Even if a very few select markets work to get the plane order price down you need decent number of orders for it to make sense.

Of course this is all assuming they can manage the incredibly complex certification and review environment that is air travel. There is always a chance they'll make it but the odds are stacked heavily against them

They claim that they will be able to profitably sell seats for $2,500.
 

Exterous

Super Moderator
Jun 20, 2006
20,429
3,533
126
They claim that they will be able to profitably sell seats for $2,500.

The company hopes the Boom jet will take three hours and 15 minutes to fly from New York to London for a price of $2,500 per passenger in either direction

The prices I was referring to are RT so they'll be closer to the $6k I figured assuming they meet their desired price point (Which I am skeptical of too)
 

Darwin333

Lifer
Dec 11, 2006
19,946
2,329
126
The prices I was referring to are RT so they'll be closer to the $6k I figured assuming they meet their desired price point (Which I am skeptical of too)

Well I for one hope they can pull it off and not because I would be flying it. I hope that their vastly reduced sonic boom along with other developments like those coming out of NASA will convince the FAA to finally change supersonic flight rules over land to something sensible like simply noise levels. IMHO once airlines can fly supersonic over land there will finally be real and significant investment in it and we won't be stuck traveling at the same speeds as we were for what 40 or 50 years? Air travel used to be just for the rich too but its now opened up for everyone, perhaps one day supersonic air travel will be the same but that will never be the case if it's restricted only to long ocean crossing routes.

Edit: And at $5K RT it is 1/3 cheaper than the average price of the Concorde so they have that going for them.
 
Last edited:

Riverhound777

Diamond Member
Aug 13, 2003
3,363
61
91
I think one of the biggest reason demand just isn't there now is because of teleconferencing. Business execs and such just don't need to be meeting in person like they use to. Important business decision to be made in Europe? Start a webex, no need to fly there ASAP.
 

RichUK

Lifer
Feb 14, 2005
10,334
677
126
Concorde was engineering master class and well ahead of its time.

This is just a rehash. Might as well just buy the Concorde blueprints and modernise electronics / navigation, etc.
 

NoTine42

Golden Member
Sep 30, 2013
1,387
78
91
I think one of the biggest reason demand just isn't there now is because of teleconferencing. Business execs and such just don't need to be meeting in person like they use to. Important business decision to be made in Europe? Start a webex, no need to fly there ASAP.
A lot of internal meetings can be Internet,

But it seems companies are physically more global (Ie manufacturing in China) and execs still need to fly around the globe to close large deals with global customers... hence the typical reason corporate headquarters move to large cities with a major international airport.
 

UglyCasanova

Lifer
Mar 25, 2001
19,275
1,361
126
I thought a sonic boom only occurred as the plane crossed the speed of sound, not a sustained thing or anything?
 
sale-70-410-exam    | Exam-200-125-pdf    | we-sale-70-410-exam    | hot-sale-70-410-exam    | Latest-exam-700-603-Dumps    | Dumps-98-363-exams-date    | Certs-200-125-date    | Dumps-300-075-exams-date    | hot-sale-book-C8010-726-book    | Hot-Sale-200-310-Exam    | Exam-Description-200-310-dumps?    | hot-sale-book-200-125-book    | Latest-Updated-300-209-Exam    | Dumps-210-260-exams-date    | Download-200-125-Exam-PDF    | Exam-Description-300-101-dumps    | Certs-300-101-date    | Hot-Sale-300-075-Exam    | Latest-exam-200-125-Dumps    | Exam-Description-200-125-dumps    | Latest-Updated-300-075-Exam    | hot-sale-book-210-260-book    | Dumps-200-901-exams-date    | Certs-200-901-date    | Latest-exam-1Z0-062-Dumps    | Hot-Sale-1Z0-062-Exam    | Certs-CSSLP-date    | 100%-Pass-70-383-Exams    | Latest-JN0-360-real-exam-questions    | 100%-Pass-4A0-100-Real-Exam-Questions    | Dumps-300-135-exams-date    | Passed-200-105-Tech-Exams    | Latest-Updated-200-310-Exam    | Download-300-070-Exam-PDF    | Hot-Sale-JN0-360-Exam    | 100%-Pass-JN0-360-Exams    | 100%-Pass-JN0-360-Real-Exam-Questions    | Dumps-JN0-360-exams-date    | Exam-Description-1Z0-876-dumps    | Latest-exam-1Z0-876-Dumps    | Dumps-HPE0-Y53-exams-date    | 2017-Latest-HPE0-Y53-Exam    | 100%-Pass-HPE0-Y53-Real-Exam-Questions    | Pass-4A0-100-Exam    | Latest-4A0-100-Questions    | Dumps-98-365-exams-date    | 2017-Latest-98-365-Exam    | 100%-Pass-VCS-254-Exams    | 2017-Latest-VCS-273-Exam    | Dumps-200-355-exams-date    | 2017-Latest-300-320-Exam    | Pass-300-101-Exam    | 100%-Pass-300-115-Exams    |
http://www.portvapes.co.uk/    | http://www.portvapes.co.uk/    |