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Search: Posts Made By: delarocha
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Forum: Spectators Balcony (Spotters Corner)
31st Jul 2008, 22:15
Replies: 5
Views: 2,677
Posted By delarocha

In the Fourth Triennial International Aircraft...

In the Fourth Triennial International Aircraft Fire and Cabin Safety Reasearch Conference in 2004 there was an interesting presentation by Tom Phillips from ALPA who mentioned that according to...
Forum: Rumours & News
24th Jan 2008, 21:47
Replies: 291
Views: 94,491
Posted By delarocha

In general FADEC ECU or EEC has its own...

In general FADEC ECU or EEC has its own alternator rendering it independent of the aircraft electrical system when N2 is above a set value.
Forum: Tech Log
9th May 2003, 00:42
Replies: 7
Views: 5,406
Posted By delarocha

For a college level book I would recommend J....

For a college level book I would recommend J. Kerrebrock "Aircraft Engines and Gas Turbines", Second Edition.
Besides the usual Aerothermodynamics stuff it includes also engine structures and...
Forum: Tech Log
3rd May 2003, 00:37
Replies: 14
Views: 2,989
Posted By delarocha

Post Please notice that Bernoulli equation relates...

Please notice that Bernoulli equation relates pressure changes to velocity along a streamline (which in a steadyflow is the trajectory traced by a fluid particle) , so it's not restricted to closed...
Forum: Tech Log
29th Oct 2002, 17:53
Replies: 4
Views: 921
Posted By delarocha

Post Present day compressors have pressure ratios over...

Present day compressors have pressure ratios over 25:1. With the addition of a fan pressure ratios of more than 25:1 are achived.
Compressor pressure ratio is available from manufacturer data.
For...
Forum: Tech Log
30th Aug 2002, 12:09
Replies: 22
Views: 3,503
Posted By delarocha

Post Four engines are best for very long ranges ...

Four engines are best for very long ranges

The reason why a four-engined aircraft is better at long ranges is essentialy twofold. First, all airliners are designed to continue to fly safely after...
Forum: Tech Log
24th Jul 2002, 09:34
Replies: 8
Views: 8,404
Posted By delarocha

Airbus FAST magazine number 14 has an article on...

Airbus FAST magazine number 14 has an article on A340/A330 fuel system
http://www.airbus.com/customer/fast14.asp

Regards
Forum: Tech Log
18th Jul 2002, 17:57
Replies: 8
Views: 8,404
Posted By delarocha

Post I can't give you a full answer since I'm only...

I can't give you a full answer since I'm only familiarized with A340-300 fuel system.
There are 5 tanks in the wings (2 inners, 2 outers, central) and 1 in the THS (Trimmable horizontal stabilizer),...
Forum: Tech Log
12th Jun 2002, 18:49
Replies: 8
Views: 3,492
Posted By delarocha

I would like to develop Bally Heck answer. The...

I would like to develop Bally Heck answer.
The EEC (non FADEC) is called a supervisory control system and contains all elements of conventional hydromechanical control plus an engine electronic...
Forum: Tech Log
8th Apr 2002, 13:08
Replies: 32
Views: 8,627
Posted By delarocha

Post Hi I'd like to add some charts that were...

Hi
I'd like to add some charts that were published on Portuguese newspaper "Expresso" about this subjet (sorry about the Portuguese)
As shown in the figure, the wind limits for FNC in the sector...
Forum: Tech Log
20th Mar 2002, 18:39
Replies: 4
Views: 9,830
Posted By delarocha

Post Dear forum readers. .. .(the following text is...

Dear forum readers. .. .(the following text is extracted from Boeing Airliner magazine, OCT-DEC 1987 issue). .. . Two types of vibration pickups have been used on Boeing airplanes, the...
Forum: Tech Log
14th Nov 2001, 21:38
Replies: 13
Views: 3,414
Posted By delarocha

Post The text bellow was posted before on this forum: ...

The text bellow was posted before on this forum:

The basic thrust setting parameters for modern high bypass engines are Engine Pressure Ratio EPR used by Pratt & Whitney and Rolls Royce, and Fan...
Forum: Tech Log
19th Oct 2001, 18:07
Replies: 13
Views: 1,289
Posted By delarocha

Post Dear forum readers The basic thrust setting...

Dear forum readers

The basic thrust setting parameters for modern high bypass engines are Engine Pressure Ratio EPR used by Pratt & Whitney and Rolls Royce, and Fan speed N1, used by GE and CFM....
Forum: Tech Log
10th Sep 2001, 20:50
Replies: 13
Views: 2,399
Posted By delarocha

Post Dear forum readers Carbon brakes represent...

Dear forum readers

Carbon brakes represent an advance in brake technology. Carbon has properties that make it highly desirable as an heat absorber.
Its high specific heat reduces brake weight....
Forum: Rumours & News
7th Sep 2001, 21:20
Replies: 50
Views: 9,665
Posted By delarocha

Post Dear forum readers According to the...

Dear forum readers

According to the preliminary investigation the damaged engine Low pressure fuel pipe had a crack 7.5 cm x 2~4 mm leading to a loss of 12 tons in 20 min.
see (newspaper article...
Forum: Tech Log
4th Sep 2001, 15:54
Replies: 5
Views: 1,704
Posted By delarocha

Post engine operation under negative load factor

Dear Forum readers

While reading the book "Aircraft Structures by Peery and Azar". On the chapter about flight loads there is a sentence which I don't fully understand
"The negative high angle of...
Forum: Tech Log
7th Aug 2001, 22:03
Replies: 6
Views: 4,323
Posted By delarocha

Post Hi There seems to be a common confusion. The...

Hi

There seems to be a common confusion. The FADEC is not a physical unit. FADEC is the name of the system which includes many components. The FADEC system provides (CFM56-5 engine):
-control the...
Forum: Tech Log
27th Jul 2001, 14:40
Replies: 8
Views: 31,362
Posted By delarocha

Post Dear Forum readers Thrust and horsepower...

Dear Forum readers

Thrust and horsepower cannot be directly compared because, by definition, power is a force applied through a distance in a period of time. All the power produced by a jet engine...
Showing results 1 to 18 of 18


 
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