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Search: Posts Made By: casual observer
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3rd Jul 2006, 02:41
Replies: 27
Views: 5,101
Posted By casual observer

Nope. The RR engines on the 747 has the worst...

Nope. The RR engines on the 747 has the worst SFC and the shortest range.
16th May 2005, 16:38
Replies: 1,021
Views: 132,544
Posted By casual observer

NWSRG: A simplified answer is the A380 has a...

NWSRG:

A simplified answer is the A380 has a big wing which can create a lot of lift, so, it doesn't need a lot of thrust. Also, Airbus planes tend to have better low-speed performance than an...
Forum: Tech Log
16th May 2005, 16:27
Replies: 26
Views: 4,367
Posted By casual observer

Air New Zealand and Qantas operate both RR- and...

Air New Zealand and Qantas operate both RR- and GE-powered B747-400s, ask them which they prefer. ;)

IIRC, Cargolux was the launch customer for the RB.211-524H-T which had a new core from the...
4th Mar 2005, 00:57
Replies: 52
Views: 11,157
Posted By casual observer

No. I meant B747-400ER. The B747-400ER is 70.7m...

No. I meant B747-400ER. The B747-400ER is 70.7m long with a cargo hold volume of 151 cu m. The A340-300 is 63.6m long with a cargo hold volume of 161.4 cu m.
3rd Mar 2005, 21:10
Replies: 52
Views: 11,157
Posted By casual observer

JDW: Your figures are still wrong, but at...

JDW:

Your figures are still wrong, but at least they are in the ballpark. I forgot to mention, the engines on the B787 will be a lot heavier than the ones on the B767.

One thing you failed to...
3rd Mar 2005, 01:08
Replies: 52
Views: 11,157
Posted By casual observer

Your estimation is way off. The -400ER is a...

Your estimation is way off. The -400ER is a 5,600nm aircraft. The B787-8 will be a 8,5000nm aircraft. (You might want to compare the OEW difference betwwen the B777-200A and the B777-200ER.) If...
Forum: Tech Log
20th Jun 2004, 21:17
Replies: 16
Views: 8,159
Posted By casual observer

The Trent 900 will not have conter-rotating...

The Trent 900 will not have conter-rotating spools, but the Trent 1000 will, so will GE's B7E7 engine. GE's Unducted Prop Fan (UDF) had counter-rotating LP spools. The PW6000 will have...
Forum: Tech Log
20th Jun 2004, 16:46
Replies: 36
Views: 6,263
Posted By casual observer

Flight Safety: Your information is...

Flight Safety:

Your information is completely incorrect. The CFM56 uses the F101 core. The GE90 core was based on a NASA-funded E3 development program(E3, pronouced as E cube, stands for Energy...
Forum: Tech Log
20th Jun 2004, 16:11
Replies: 10
Views: 2,393
Posted By casual observer

I will take Forgeard statement with a huge pinch...

I will take Forgeard statement with a huge pinch of salt. History is not on Airbus' side. All Airbus four-holers have not been on time and "on" weight, and hence can be deduced not on budget...
Forum: Tech Log
12th Jun 2004, 12:56
Replies: 6
Views: 1,736
Posted By casual observer

No, Boeing hasn't changed their mind over...

No, Boeing hasn't changed their mind over winglets. While the short-range version of the B7E7 will have winglets, the base and the stretched versions (i.e., the two long-range versions) will have...
10th Jun 2004, 12:17
Replies: 79
Views: 17,675
Posted By casual observer

Of course they would. ;) I will provide some...

Of course they would. ;) I will provide some more perspective and let you be the judge. Boeing failed to launch the B777X in 1997 with a proposed 102-104klb engine. However, RR run a Trent 8104...
10th Jun 2004, 09:16
Replies: 79
Views: 17,675
Posted By casual observer

FWIW, at this point all the three B777 engines...

FWIW, at this point all the three B777 engines have very similar IFSD, UER, SVR, and dispatch reliability rates, with the PW4000 lagging a little bit in the IFSD department.
10th Jun 2004, 01:32
Replies: 79
Views: 17,675
Posted By casual observer

Yes. Rolls had a Trent 8104 development engine...

Yes. Rolls had a Trent 8104 development engine that they had run up to 110klb thrust. Just like the GE90-115B engine, GE also had run the engine up to nearly 123klb thrust. Being able to run to...
7th Jun 2004, 21:19
Replies: 79
Views: 17,675
Posted By casual observer

747FOCAL: I wonder if the problem that you...

747FOCAL:

I wonder if the problem that you are referring to is related to the loading restrictions that the aircraft currently have at the highest available MTOW of 775,000lb. If so, this...
5th Jun 2004, 12:52
Replies: 79
Views: 17,675
Posted By casual observer

Perhaps they indeed were telling the truth. My...

Perhaps they indeed were telling the truth. My understanding is the incident didn't happen during the delivery flight.



Mr Boeing will tell BA to go ahead and buy the A340-600 that is on a...
Forum: Tech Log
21st Jun 2003, 19:03
Replies: 14
Views: 2,556
Posted By casual observer

Thank you all for the replies. The reason I...

Thank you all for the replies. The reason I asked the question is I know reduced thrust takeoff will prolong on-wing life of the engines and reduce maintenance cost. I just wonder how much...
Forum: Tech Log
21st Jun 2003, 04:59
Replies: 7
Views: 1,655
Posted By casual observer

In late 80s, Cathay was in dire need of an L-1011...

In late 80s, Cathay was in dire need of an L-1011 replacement. The A330-300 was available and met Cathay's needs. At that time the B777 concept wasn't even well defined, so the A330-300 got the...
Forum: Tech Log
20th Jun 2003, 09:36
Replies: 14
Views: 2,556
Posted By casual observer

reduced-thrust take-off

Do airlines mandate reduced-thrust take-off when possible, or is it at pilots' discretion?
31st May 2003, 05:09
Replies: 15
Views: 1,890
Posted By casual observer

Sigmund: Okay. I checked the...

Sigmund:

Okay. I checked the Merriam-Webster Dictionary and it says "none" can be used in singular or plural construction. Nevertheless, when I said pathetic, I was mostly referring to the...
31st May 2003, 04:06
Replies: 15
Views: 1,890
Posted By casual observer

This is absolutely pathetic. I'm not a native...

This is absolutely pathetic. I'm not a native English speaker, but I can tell you for certain it should be "was" not "were". The person who said it should be "were" because of the word "them"...
4th May 2003, 22:39
Replies: 59
Views: 10,630
Posted By casual observer

Let's look at the A320. It was launched in 1984...

Let's look at the A320. It was launched in 1984 when Airbus just finished developing the A310 and A300-600. (FWIW, the A300/310 was a complete financial failure.) Obviously, it was prior to the...
4th May 2003, 20:51
Replies: 248
Views: 44,190
Posted By casual observer

I didn't browse through the whole thread, so I...

I didn't browse through the whole thread, so I don't know if my concern has been discussed in this thread.

What we are trying to prevent are events similar to 9/11. However, by arming pilots, we...
Forum: Tech Log
23rd Sep 2002, 21:02
Replies: 14
Views: 2,916
Posted By casual observer

The bird ingestion tests are a lot more stringent...

The bird ingestion tests are a lot more stringent now than 30 years ago. However, composite material technology is a lot more advanced. That's why it's working with the GE90 but it didn't with the...
Forum: Tech Log
23rd Sep 2002, 11:50
Replies: 14
Views: 2,916
Posted By casual observer

No. For the bird ingestion test, the GE90 had to...

No. For the bird ingestion test, the GE90 had to pass the exact same tests as the PW4000 and the Trent 800. They did use slightly different rules for the blade out tests. Based on my limited...
Forum: Tech Log
22nd Sep 2002, 19:08
Replies: 14
Views: 2,916
Posted By casual observer

The GE90 has been in service for more than seven...

The GE90 has been in service for more than seven years with composite fan blades, and the GE90 fan has been performing quite well in the field.
Showing results 1 to 25 of 81
 


 
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