Train GraphicClick on the map to explore geographics
 
I need help
FAQ
Emergency
About .
Travel & transport from BBC stories as at 19:55 28 Mar 2024
* Easter getaways hit by travel disruption
- Where Baltimore bridge investigation goes now
- How do I renew my UK passport and what is the 10-year rule?
- Passengers pleaded with knifeman during attack
- Family anger at sentence on fatal crash driver, 19
- Easter travel warning as millions set to hit roads
Read about the forum [here].
Register [here] - it's free.
What do I gain from registering? [here]
 02/06/24 - Summer Timetable starts
17/08/24 - Bus to Imber
27/09/25 - 200 years of passenger trains

On this day
28th Mar (1917)
Bideford, Westward Ho! and Appledore closed (link)

Train RunningCancelled
17:57 London Paddington to Worcester Foregate Street
18:08 London Paddington to Frome
18:36 London Paddington to Plymouth
19:23 Reading to Gatwick Airport
19:33 London Paddington to Worcester Shrub Hill
19:35 Exeter St Davids to London Paddington
19:55 Bedwyn to Newbury
20:13 Swindon to Westbury
20:16 Frome to Westbury
20:20 Reading to Shalford
20:49 Newbury to Bedwyn
20:56 Worcester Foregate Street to London Paddington
21:16 Bedwyn to Newbury
21:30 Shalford to Reading
21:53 Newbury to Bedwyn
22:25 Bedwyn to Newbury
22:47 Newbury to Bedwyn
Short Run
15:03 London Paddington to Penzance
16:03 London Paddington to Penzance
16:19 Carmarthen to London Paddington
16:35 London Paddington to Plymouth
16:50 Plymouth to London Paddington
17:03 London Paddington to Penzance
17:30 London Paddington to Taunton
17:36 London Paddington to Plymouth
17:50 Gloucester to Salisbury
18:03 London Paddington to Penzance
18:54 Reading to Gatwick Airport
18:59 Gatwick Airport to Reading
19:04 Paignton to London Paddington
19:06 London Paddington to Bedwyn
19:13 Salisbury to Bristol Temple Meads
19:29 Gatwick Airport to Reading
20:03 London Paddington to Plymouth
20:11 Salisbury to Bristol Temple Meads
20:42 Bedwyn to London Paddington
21:04 London Paddington to Plymouth
Delayed
16:15 Penzance to London Paddington
Additional 17:17 Exeter St Davids to Penzance
Additional 17:26 Castle Cary to Penzance
19:04 London Paddington to Plymouth
An additional train service has been planned to operate as shown 19:40 Redhill to Reading
19:54 Reading to Gatwick Airport
19:59 Gatwick Airport to Reading
23:04 Reading to Bedwyn
PollsOpen and recent polls
Closed 2024-03-25 Easter Escape - to where?
Abbreviation pageAcronymns and abbreviations
Stn ComparatorStation Comparator
Rail newsNews Now - live rail news feed
Site Style 1 2 3 4
Next departures • Bristol Temple MeadsBath SpaChippenhamSwindonDidcot ParkwayReadingLondon PaddingtonMelksham
Exeter St DavidsTauntonWestburyTrowbridgeBristol ParkwayCardiff CentralOxfordCheltenham SpaBirmingham New Street
March 28, 2024, 20:10:26 *
Welcome, Guest. Please login or register.

Login with username, password and session length
Forgotten your username or password? - get a reminder
Most recently liked subjects
[118] West Wiltshire Bus Changes April 2024
[116] would you like your own LIVE train station departure board?
[89] Infrastructure problems in Thames Valley causing disruption el...
[46] Return of the BRUTE?
[38] If not HS2 to Manchester, how will traffic be carried?
[28] Reversing Beeching - bring heritage and freight lines into the...
 
News: A forum for passengers ... with input from rail professionals welcomed too
 
   Home   Help Search Calendar Login Register  
Linked Events
  • WECA meetings: July 27, 2018
Pages: 1 2 [3] 4
  Print  
Author Topic: Tardis - the latest way to travel around Bristol?  (Read 7986 times)
Western Pathfinder
Global Moderator
Hero Member
*****
Posts: 1528



View Profile
« Reply #30 on: August 05, 2018, 01:06:18 »

Something about optimal balance V weight distribution iirc.
Logged
Red Squirrel
Administrator
Hero Member
*****
Posts: 5190


There are some who call me... Tim


View Profile
« Reply #31 on: August 05, 2018, 10:03:08 »


24 blades in a Rolls Royce Trent 900 engine...


I've just counted the blades in the Trent 900 I've just finished mounting in my Norton Commando (handles like a pig, but goes like stink) and I can tell you that there are a lot more than 24. However, if we just count the fan blades...
Logged

Things take longer to happen than you think they will, and then they happen faster than you thought they could.
martyjon
Transport Scholar
Hero Member
******
Posts: 1941


View Profile
« Reply #32 on: August 05, 2018, 10:38:16 »


24 blades in a Rolls Royce Trent 900 engine...


I've just counted the blades in the Trent 900 I've just finished mounting in my Norton Commando (handles like a pig, but goes like stink) and I can tell you that there are a lot more than 24. However, if we just count the fan blades...


There are blades and blades and blades in a RR Trent 900 cos there is the Low Pressure Compressor, Intermediate Pressure Compressor and High Pressure Compressor and then there are more blades or to use the technical term for them at the back end, stators, on each of the High Pressure Turbine, the Intermediate Pressure Turbine and the Low Pressure Turbine. Most of the air that goes in at the front end of the engine passes over the bulk of the engine and sort of forms a noise absorption barrier to absorb the majority of the noise that comes out of the back end. It is known as a Turbo Fan or triple spool engine. Hence all the positive comments when RR's 211 came out on the L-1011, comments on how quiet it was. Compare it to the Olympus used on Concorde, a twin spool engine. 
Logged
Red Squirrel
Administrator
Hero Member
*****
Posts: 5190


There are some who call me... Tim


View Profile
« Reply #33 on: August 05, 2018, 20:33:57 »

Quite so. Lockheed weren't all that delighted when RR went bust though, and it is no coincidence that the TriStar marked the end of Lockheed as a commercial jet maker.

Just to be clear, blades go round and stators/vanes stay still and direct the gases. There are plenty of each at both ends of an engine, generally taking turns.
Logged

Things take longer to happen than you think they will, and then they happen faster than you thought they could.
martyjon
Transport Scholar
Hero Member
******
Posts: 1941


View Profile
« Reply #34 on: August 05, 2018, 21:29:49 »

Quite so. Lockheed weren't all that delighted when RR went bust though, and it is no coincidence that the TriStar marked the end of Lockheed as a commercial jet maker.

Rolls-Royce did not go bust, what happened was that problems with the RB211 meant that had Rolls-Royce continued as they were, warranty claims would have pushed them "over the brink" and the then Tory Government were informed and advised that the company be liquidated. So on 04 February 1971 the original Rolls Royce was placed into liquidation and Rolls Royce (1971) was born. It is true that many suppliers to the company lost large sums but I suppose the situation was one of which one could describe as which was the "lesser of evils".
Logged
Christina Biggs FOSBR
Full Member
***
Posts: 33


View Profile Email
« Reply #35 on: August 05, 2018, 21:50:11 »

I was there too, where, the WECA» (West of England Combined Authority - about) meeting.

Hi Marty, not sure I remember seeing you there on Friday 27 July, or is this Tardis-speak for Friday 28 September?

Tina
Logged
martyjon
Transport Scholar
Hero Member
******
Posts: 1941


View Profile
« Reply #36 on: August 05, 2018, 21:56:09 »

I was there too, where, the WECA» (West of England Combined Authority - about) meeting.

Hi Marty, not sure I remember seeing you there on Friday 27 July, or is this Tardis-speak for Friday 28 September?

Tina

We had coffee together and I brought one back 4 DR,
Logged
Red Squirrel
Administrator
Hero Member
*****
Posts: 5190


There are some who call me... Tim


View Profile
« Reply #37 on: August 06, 2018, 12:01:34 »

Quite so. Lockheed weren't all that delighted when RR went bust though, and it is no coincidence that the TriStar marked the end of Lockheed as a commercial jet maker.

Rolls-Royce did not go bust, what happened was that problems with the RB211 meant that had Rolls-Royce continued as they were, warranty claims would have pushed them "over the brink" and the then Tory Government were informed and advised that the company be liquidated. So on 04 February 1971 the original Rolls Royce was placed into liquidation and Rolls Royce (1971) was born. It is true that many suppliers to the company lost large sums but I suppose the situation was one of which one could describe as which was the "lesser of evils".

OK, they would have gone bust if they hadn't been seen as 'too big to fail'...

I started working for RR in the 1970s and was there when it was privatised. I couldn't imagine why they would want to move from a 'cost-plus' basis, where they estimated the cost of a project and were then paid 10% over by the government, to a commercial basis where they took their own risk (up to a point) and made their own profits.

There is a parallel here with out present nationalised railway: The nationalised RR Ltd would see a business opportunity, set a budget, and then wait months or years for Whitehall to assess the benefits. By the time funding was agreed, there was a good chance that the requirement might have changed or disappeared, so it had to go back to the committee for more second-guessing; on the other hand sometimes they'd do most of the engineering work on a project only to have the funding pulled for political reasons.
Logged

Things take longer to happen than you think they will, and then they happen faster than you thought they could.
martyjon
Transport Scholar
Hero Member
******
Posts: 1941


View Profile
« Reply #38 on: August 06, 2018, 12:20:24 »

Quite so. Lockheed weren't all that delighted when RR went bust though, and it is no coincidence that the TriStar marked the end of Lockheed as a commercial jet maker.

Rolls-Royce did not go bust, what happened was that problems with the RB211 meant that had Rolls-Royce continued as they were, warranty claims would have pushed them "over the brink" and the then Tory Government were informed and advised that the company be liquidated. So on 04 February 1971 the original Rolls Royce was placed into liquidation and Rolls Royce (1971) was born. It is true that many suppliers to the company lost large sums but I suppose the situation was one of which one could describe as which was the "lesser of evils".

OK, they would have gone bust if they hadn't been seen as 'too big to fail'...

I started working for RR in the 1970s and was there when it was privatised. I couldn't imagine why they would want to move from a 'cost-plus' basis, where they estimated the cost of a project and were then paid 10% over by the government, to a commercial basis where they took their own risk (up to a point) and made their own profits.

There is a parallel here with out present nationalised railway: The nationalised RR Ltd would see a business opportunity, set a budget, and then wait months or years for Whitehall to assess the benefits. By the time funding was agreed, there was a good chance that the requirement might have changed or disappeared, so it had to go back to the committee for more second-guessing; on the other hand sometimes they'd do most of the engineering work on a project only to have the funding pulled for political reasons.


I started there when it was still Bristol Siddeley Engines Limited, was there to hear the fateful announcement in 1971, was there when it was re-privatised and took full advantage of the free and matching offer in the share sale and followed my fathers loyalty in obtaining my long service award for 25 years service too, a gold watch from Garrards, the Queens jewellers.
Logged
TonyK
Global Moderator
Hero Member
*****
Posts: 6435


The artist formerly known as Four Track, Now!


View Profile
« Reply #39 on: August 06, 2018, 21:02:27 »


24 blades in a Rolls Royce Trent 900 engine...


I've just counted the blades in the Trent 900 I've just finished mounting in my Norton Commando (handles like a pig, but goes like stink) and I can tell you that there are a lot more than 24. However, if we just count the fan blades...


There are blades and blades and blades in a RR Trent 900 cos there is the Low Pressure Compressor, Intermediate Pressure Compressor and High Pressure Compressor and then there are more blades or to use the technical term for them at the back end, stators, on each of the High Pressure Turbine, the Intermediate Pressure Turbine and the Low Pressure Turbine. Most of the air that goes in at the front end of the engine passes over the bulk of the engine and sort of forms a noise absorption barrier to absorb the majority of the noise that comes out of the back end. It is known as a Turbo Fan or triple spool engine. Hence all the positive comments when RR's 211 came out on the L-1011, comments on how quiet it was. Compare it to the Olympus used on Concorde, a twin spool engine. 

Listen, I said I didn't know! I didn't expect a sort of Spanish Inquisition.
Logged

Now, please!
Western Pathfinder
Global Moderator
Hero Member
*****
Posts: 1528



View Profile
« Reply #40 on: August 06, 2018, 23:55:53 »

No one does !.
Logged
Red Squirrel
Administrator
Hero Member
*****
Posts: 5190


There are some who call me... Tim


View Profile
« Reply #41 on: August 07, 2018, 09:10:13 »

Our chief weapon is the GRIP (Guide to Railway Investment Projects) process...
Logged

Things take longer to happen than you think they will, and then they happen faster than you thought they could.
JayMac
Data Manager
Hero Member
******
Posts: 18894



View Profile
« Reply #42 on: August 07, 2018, 11:43:21 »

... and Control Period spending... Our two weapons are the GRIP (Guide to Railway Investment Projects) Process and Control Period spending... and a ruthless inefficiency... Our three weapons are the GRIP process, Control Period spending, a ruthless inefficiency... and an almost fanatical devotion to Chris Grayling...
Logged

"Build a man a fire and he'll be warm for the rest of the day. Set a man on fire and he'll be warm for the rest of his life."

- Sir Terry Pratchett.
Western Pathfinder
Global Moderator
Hero Member
*****
Posts: 1528



View Profile
« Reply #43 on: August 07, 2018, 11:47:53 »

It will be the Comfy Chair for you next time BNM.
Logged
paul7575
Transport Scholar
Hero Member
******
Posts: 5316


View Profile
« Reply #44 on: August 07, 2018, 12:16:31 »

It will be the Comfy Chair for you next time BNM.
Only if he takes a car...

Paul
Logged
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 customers 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 to report). Forum hosted by Well House Consultants

Jump to top of pageJump to Forum Home Page