Train Graphic
Great Western Passengers' Forum Great Western Coffee Shop - [home] and [about]
Read about the forum [here].
Register and contribute [here] - it's free.
article index - [here]
 today - TransWilts Design entries end
tomorrow - Bristol clean air day
22/06/2019 - Steam on the District
22/06/2019 - Shaw Summer Fayre
24/06/2019 - National Rail Safety Week
25/06/2019 - First Group Shareholder mtg
Random Image
Train Running @GWR Twitter Acronyms/Abbreviations Station Comparator Rail news GWR co. site Site Style 1 2 3 4 Chat on off
Next departures • Bristol Temple MeadsBath SpaChippenhamSwindonDidcot ParkwayReadingLondon PaddingtonMelksham
Exeter St DavidsTauntonWestburyTrowbridgeBristol ParkwayCardiff CentralOxfordCheltenham SpaBirmingham New Street
June 19, 2019, 11:48:26 pm *
Welcome, Guest. Please login or register.

Login with username, password and session length
Forgotten your username or password? - get a reminder
Most liked recent subjects
[99] Problems with the Night Riviera sleeper - December 2014 onward...
[97] Off-lease High Speed Trains running out of time to avoid scrap...
[72] An extra train on the TransWilts today - 19 Jun 19
[44] Go-Op Cooperative - update
[36] GWR bans surfboards from IET services
[34] IETs into passenger service from 16 Oct 2017 and subsequent pe...
News: A forum for passengers ... with input from rail professionals welcomed too
 
   Home   Help Search Calendar Login Register  
Pages: 1 2 3 [4]
  Print  
Author Topic: FlyBMI - Gone into administration.  (Read 2320 times)
4064ReadingAbbey
Hero Member
*****
Posts: 353


View Profile
« Reply #45 on: February 23, 2019, 01:40:35 pm »

This thread is being drifted by a strong tangental crosswind!

To get back a little on course/topic, I was intrigued by -

Quote
Figures for aircraft and airline fuel consumption are publicly available. Ryanair is a low-cost airline serving mainly European destinations; it seats 189 people in its Boeing 737-800s. Using typical values for sector lengths, fuel consumption and seat occupancy it can be seen that the fuel consumption is marginally greater than 3 litres/100 km/seat - based on typical sector consumption of something over 5 tonnes and a typical sector being something over an hour. This figure will obviously vary depending on sector lengths, cruising altitude, load, winds and air temperature but will remain close to 3 litres/100 km/seat - it will be neither 1.5 litres/100 km/seat nor 6 litres/100 km/seat




Surely aircraft fuel consumption is exponentially greater on take-off? Do the figures above represent cruising consumption or do they take into account take-off as well?

And to get back totally on topic - did I hear correctly that FlyBMI had an average passenger load of 18 per flight? In which case presumably each passenger's carbon footprint would have been enormous!


These figures include take-off consumption. A 737-800 burns roughly 2,400kg per hour in the cruise, so short-haul routes have a higher consumption per sector than long-haul routes for the same aircraft type.

However as TonyK wrote in post 37, consumption is very carefully controlled by the flight ops department and the flight crew. Maximum, or the required, take-off power is used only for two or three minutes or so after which the engines are throttled back for the climb. Generally it takes about 20-25 minutes to reach cruise altitude of 30 to 35,000ft after which the power level is reduced again. To avoid the passengers having ear problems on decent the rate is usually less than about 2,000ft per minute - corresponding to a cabin altitude change rate of around 400 ft/min (for a cruise cabin altitude of 8,000ft). This means that the engines are returned to flight idle for the 20 minutes or so of the descent until the landing pattern is joined. Of course air traffic control may dictate a less than optimum approach so consumption will be higher than the best case would suggest.
« Last Edit: February 23, 2019, 01:54:07 pm by 4064ReadingAbbey » Logged
IndustryInsider
Hero Member
*****
Posts: 7248


View Profile
« Reply #46 on: March 28, 2019, 02:30:25 pm »

I see another European budget airline, Wow Air, with flights into London and Edinburgh has stopped flying 'leaving thousands stranded'.

https://www.itv.com/news/2019-03-28/thousands-stranded-as-wow-air-stops-flying/
Logged

To view my cab run over the new Reading Viaduct as well as a relief line cab ride at Reading just after Platforms 12-15 opened and my 'before and after' video comparison of the Cotswold Line Redoubling scheme, see: http://www.dailymotion.com/user/IndustryInsider/1
Thatcham Crossing
Hero Member
*****
Posts: 603


View Profile
« Reply #47 on: March 28, 2019, 02:50:27 pm »

WOW have been on life-support for a while. They expanded very (too) quickly in recent years, with an operation based upon using Keflavik as a low-cost hub for flights into Europe to the east, and USA and Canada to the west.

They were then subject to a take-over bid by the more established Icelandic "full-service" airline Icelandair (who operate in a similar way), but they announced they were pulling-out at the weekend (as I think WOW lost some other investors).

As this was happening, aircraft were starting to be grounded (one in Montreal, that I am aware of, maybe others) as the lessors started to take control.

There is something of a right-sizing going on in the commercial airline industry at the moment, off the back of too much expansion and resulting over-capacity in some markets (low-cost transatlantic being one).
Logged
TonyK
Global Moderator
Hero Member
*****
Posts: 4325


The artist formerly known as Four Track, Now!


View Profile
« Reply #48 on: March 28, 2019, 03:30:41 pm »

I flew with Wow last October, from Montreal to Keflavik. It was a nice tidy A320 NEO, and was an unremarkable flight. We took off and landed to schedule, with no drama en route. I don't recall empty seats on board. I have also flown with Icelandair, which is a more polished operation than the budget airline. I flew to Vancouver and home from Seattle, both changing at Keflavik, motivated by the low fare. It proved very enjoyable, not least because we stopped in Iceland for 4 days without any extra fare. Newly refurbed Boeing 767 between Heathrow and Keflavik, 757s on the other legs.
It is a shame to see Wow go, but I found it hard to understand how a country of 350,000 people could sustain two international airlines. They do punch above their weight in many ways, though, as the England football team found at the Euro competition.
Logged

Now, please!
Do you have something you would like to add to this thread, or would you like to raise a new question at the Coffee Shop? Please [register] (it is free) if you have not done so before, or login (at the top of this page) if you already have an account - we would love to read what you have to say!

You can find out more about how this forum works [here] - that will link you to a copy of the forum agreement that you can read before you join, and tell you very much more about how we operate. We are an independent forum, provided and run by customers of Great Western Railway, for customers of Great Western Railway and we welcome railway professionals as members too, in either a personal or official capacity. Views expressed in posts are not necessarily the views of the operators of the forum.

As well as posting messages onto existing threads, and starting new subjects, members can communicate with each other through personal messages if they wish. And once members have made a certain number of posts, they will automatically be admitted to the "frequent posters club", where subjects not-for-public-domain are discussed; anything from the occasional rant to meetups we may be having ...

 
Pages: 1 2 3 [4]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.2 | SMF © 2006-2007, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
This forum is provided by a customer of Great Western Railway (formerly First Great Western), and the views expressed are those of the individual posters concerned. Visit www.gwr.com for the official Great Western Railway website. Please contact the administrators of this site if you feel that the content provided by one of our posters contravenes our posting rules (email link). Forum hosted by Well House Consultants

Jump to top of pageJump to Forum Home Page