Why hasn't air travel got any faster?
Why hasn't air travel got any faster?
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Discussion

gord115

Original Poster:

84 posts

209 months

Thursday 12th October 2017
quotequote all
We've just got back from Tenerife, the flight took 4 hours.

When I last went in 2002 and before that in 1992 the flight also took 4 hours.

In 1992 my 205 gti had 130bhp. My golf r has 300 bhp.

Why have cars got so much faster but other modes of transport haven't?

MDMetal

3,537 posts

177 months

Thursday 12th October 2017
quotequote all
-The cost of car ownership has gone up, the cost of flying has gone down (from a passenger perspective)

-Not enough people would pay the premium to make it worth the 4 hour flight taking 3 hours.

-Your plane probably quite happily does it in 3 hours but they fly slow to reduce the fuel costs.

Shakermaker

11,317 posts

129 months

Thursday 12th October 2017
quotequote all
It did, but then it didn't need to get any faster.

Concord would be an obvious example. Sure, you can spend £10,00 to get to New York in 3 hours if you really need to, but you'll be stuck in a small cramped seat.

Or for also £10,000 you can take 8 hours to get there but in ultimate luxury

TwigtheWonderkid

48,954 posts

179 months

Thursday 12th October 2017
quotequote all
Why haven't cars got cheaper

In 1992 my 205 gti cost a lot less than my golf r.

But in 2002, a flight to Tenerfie was far more expensive than it is now.


Why have flights got so much cheaper but other modes of transport haven't?

HustleRussell

26,477 posts

189 months

Thursday 12th October 2017
quotequote all
The efficiency of the jet engine. Much in the same way that your 130bhp car and your 300bhp car are both running at their most efficient at around 60mph becoz physics. Same reason you will cruise at 90mph on the motorway but your minicab driver is loath to exceed 70.

rxe

6,700 posts

132 months

Thursday 12th October 2017
quotequote all
Going above Mach 1 requires much harder engineering. Passenger airliners have been 0.95 Mach for a long time now. They’re not going to get any faster in their current form.

J4CKO

46,809 posts

229 months

Thursday 12th October 2017
quotequote all
Aerodynamics is the main reason, faster speeds have obviously been tried but the engineering, aerodynamics and fuel considerations are an order of magnitude more complex and expensive than subsonic travel, unless someone bumps the speed of sound up cant see that changing.

The manufacturers and airlines have concentrated on improving subsonic travel, in terms of comfort, safety and efficiency, and most planes have become variations on the two engines slung under the low wing template as that is what works best, the innovation is still there but you dont see it in wacky configurations, more now in materials, weight saving, comfort and systems.


It still amazes me I can get to the Canary Islands in four hours from Manchester, whilst having a drink and watching a film for £250 or so.

Concorde was an utterly amazing folly really, glad it was made and it advanced the technology a lot, it was an answer to the question of supersonic travel but aside from Joan Collins nobody was really that bothered, better twice the time in more comfort, just get an earlier flight !



shirt

25,373 posts

230 months

Thursday 12th October 2017
quotequote all
Costs have gone down, comfort/luxury has gone up, safety has improved massively.

You could travel faster, but you can't afford to do so. Appreciate instead that the overall experience is vastly improved on that you received way back when.

AJB88

15,707 posts

200 months

Thursday 12th October 2017
quotequote all
MDMetal said:
(from a passenger perspective)
I wouldn't say it has, just that now we now pay extra for stuff that used to be "included"

SantaBarbara

3,244 posts

137 months

Thursday 12th October 2017
quotequote all
Shakermaker said:
It did, but then it didn't need to get any faster.

Concord would be an obvious example. Sure, you can spend £10,00 to get to New York in 3 hours if you really need to, but you'll be stuck in a small cramped seat.

Or for also £10,000 you can take 8 hours to get there but in ultimate luxury
But if yu choose to go by boat, you can get to New York in luxury bu it can take seven days

Lowtimer

4,293 posts

197 months

Thursday 12th October 2017
quotequote all
Because it became 'fast enough' in the early jet age, and ever since then customers have voted with their pockets to put cheapness over speed.

Even disregarding Concordes, airliners operate at slower cruise speeds now than before the 70s oil shock, to reduce fuel burn alongside more efficient engine and aerodynamic design which also contribute to economy. But commercial air fares are vastly cheaper in real terms. And given the choice almost everyone wants it cheap rather than slightly faster and twice the cost..

Edited by Lowtimer on Thursday 12th October 17:01

MDMetal

3,537 posts

177 months

Thursday 12th October 2017
quotequote all
AJB88 said:
MDMetal said:
(from a passenger perspective)
I wouldn't say it has, just that now we now pay extra for stuff that used to be "included"
Nonsense, budget airfares didn't exist in 1992, I've flown to parts of Europe for £50 return, what's that an average meal for two out? Good luck with that in 1992! What's changed is companies have realised the money is in volume, make it cheaper and more people will fly, it's better to earn £1 from 100 people that £5 from 10. Nobody doesn't take a flight because of the flight time, you might moan about it but it won't stop you, what will stop you is it being a few pennies more.

Investment is in lowering the cost of the flight, reducing weight and inefficiencies, using economies of scales to make planes cheaper etc, there's no market for a marginally faster plane.

Ninja59

3,691 posts

141 months

Thursday 12th October 2017
quotequote all
Depends how you view it but airlines and many people won't pay for something to go faster or get them there quicker now.

Regarding the planes themselves I cannot think of a passenger jet that is set to match Concorde, airlines in the drive for discount have had to reduce "comfort" and enhance efficiency.

Airbus A380 - Amazing investment, airports that needed adjustment to accept it. Unfortunately for Airbus the dream is not really working out that well with minimal ongoing orders (to the extent that Qatar Airways deal could decide the A380's fate). It seems strange but I think the size issue of the A380 massively restricts its ability and the cost for many airlines is prohibitive.

Airbus obviously has not been helped by some recent launches either.

Boeing - Seem more obsessed with getting the US Federal Government to impose import duties on Bombardier currently....than planes.

djc206

13,559 posts

154 months

Thursday 12th October 2017
quotequote all
rxe said:
Going above Mach 1 requires much harder engineering. Passenger airliners have been 0.95 Mach for a long time now. They’re not going to get any faster in their current form.
Name me one commercial airliner that flies at Mach .95

Muddle238

4,414 posts

142 months

Thursday 12th October 2017
quotequote all
A B737-800 cruising with a full load of passengers from London to Tenerife at FL370 with be cruising around Mach .77-.78. The available speed range is in the region of Mach .75 to Mach .81, without getting too close to the low-speed buffer or high-speed buffer of Mach .82. In reality, due to airways capacity controllers will request that aircraft all fly either slower than a specific Mach number, an exact Mach number or any speed greater than a specific Mach number. Due to slight variances in speeds on different types (we're talking 0.01 Mach in "cruise economy") everyone will be sitting around Mach .77 to Mach .79.

If you took two aircraft on identical days and flew one route at M.77 and the other at M.78, the difference in flight time would be about 10 minutes over the course of a standard, non NATS HLA, European routing from London to Tenerife. This is governed partly by ATC but mainly aerodynamics, which haven't changed much since the earlier 90's.

Now if they brought Concorde back it would be a different story, but nowadays with a majority of aircraft across Europe in either A320 family aircraft or B737 family aircraft, flight times aren't going to change much.


SantaBarbara

3,244 posts

137 months

Thursday 12th October 2017
quotequote all
The nois level of Concord at take off would be above some current threshold I expect

MDMetal

3,537 posts

177 months

Thursday 12th October 2017
quotequote all
Ninja59 said:
Depends how you view it but airlines and many people won't pay for something to go faster or get them there quicker now.

Regarding the planes themselves I cannot think of a passenger jet that is set to match Concorde, airlines in the drive for discount have had to reduce "comfort" and enhance efficiency.

Airbus A380 - Amazing investment, airports that needed adjustment to accept it. Unfortunately for Airbus the dream is not really working out that well with minimal ongoing orders (to the extent that Qatar Airways deal could decide the A380's fate). It seems strange but I think the size issue of the A380 massively restricts its ability and the cost for many airlines is prohibitive.

Airbus obviously has not been helped by some recent launches either.

Boeing - Seem more obsessed with getting the US Federal Government to impose import duties on Bombardier currently....than planes.
Having my first A380 flight I preferred it to the dream-liner, the dream-liner has some neat tech but the A380 is so big the turbulence just seemed like a small wave it was noticeably different to fly in due to it's size but yes it needs some modifications to make best use of and works best on high capacity routes

Mave

8,217 posts

244 months

Thursday 12th October 2017
quotequote all
MDMetal said:
-The cost of car ownership has gone up, the cost of flying has gone down (from a passenger perspective)

-Not enough people would pay the premium to make it worth the 4 hour flight taking 3 hours.

-Your plane probably quite happily does it in 3 hours but they fly slow to reduce the fuel costs.
Flying a 4 hour journey in 3 hours isn't just a case of putting your foot down. An aircraft that is designed to cruise at ~ M0.8 will not happily cruise at > M1.0!

vikingaero

13,145 posts

198 months

Thursday 12th October 2017
quotequote all
A 4 hour flight isn't a 4 hour flight though? Drive to the airport, allow time to park, 3 hour check in, then once on the plane it's at the mercy of ATC and making the slot, then disembark, await luggage and you could still be a hour or 3 away from your destination by car/coach/train.

anonymous-user

83 months

Thursday 12th October 2017
quotequote all
gord115 said:
We've just got back from Tenerife, the flight took 4 hours.

When I last went in 2002 and before that in 1992 the flight also took 4 hours.

In 1992 my 205 gti had 130bhp. My golf r has 300 bhp.

Why have cars got so much faster but other modes of transport haven't?
And yet driving from Cardiff to Coventry used to take me 90 minutes in my 1.9D Clio in 1999 and takes me at least150 minutes now no matter how much power my car has.

Jet engines actually generate a stload more peak thrust now, make a lot less noise, and are considerably more efficient. Sadly for tourists squashed into planes like sardines the actual cruising speed is a factor of aerodynamics, and as others have stated once you go supersonic things get a lot more complicated, expensive, inefficient, and noisy.