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Search: Posts Made By: ex902
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Forum: Questions
8th Jan 2018, 13:23
Replies: 3
Views: 1,018
Posted By ex902

A question regarding 'level flight thrust'

Hello,

I read a comment as follows:

"A level flight at idle thrust is also possible, when aircraft aim for a fast deceleration at constant altitude"

I am not a pilot so I do not want to say...
Forum: Tech Log
7th Aug 2017, 19:39
Replies: 16
Views: 7,328
Posted By ex902

Thank you very much for your valuable comments...

Thank you very much for your valuable comments and discussion.
Forum: Tech Log
1st Aug 2017, 06:57
Replies: 16
Views: 7,328
Posted By ex902

Thrust reduction during departure

Hi,

We are working on a paper focusing departure and climb phase. According to data for typical narrow-bodied commercial aircraft we have, it seems that the engine thrust is reduced at about 1500...
Forum: Tech Log
27th May 2016, 08:13
Replies: 0
Views: 1,050
Posted By ex902

A330-FDR (unclear GWC value)

Hi,
I study on a set of FDR about A330 on medium and long range flights. However, may be because there was a systematic mistake, the gwc (supposed to be aircraft mass in tonne) column shows value as...
Forum: Tech Log
15th Sep 2014, 13:09
Replies: 6
Views: 2,971
Posted By ex902

Dear all, thank you for the comments and for your...

Dear all, thank you for the comments and for your time.

@Sidestick_n_Rudder: Excuse me but I could not understand what you mean with sampling rate of FF?
@FlightDetent:
1) Yes I agree 100%, I...
Forum: Tech Log
14th Sep 2014, 16:18
Replies: 6
Views: 2,971
Posted By ex902

A320 family - takeoff fuel flow FDR anomaly (to me)

Hi,

I am examining the flight data records of A319/320/321 and so often see that the fuel flow records of one engine maintain the exactly same FF value for a while: at takeoff and some initial...
Forum: Tech Log
25th Aug 2013, 11:53
Replies: 4
Views: 2,039
Posted By ex902

Thank you @barit1; Excuse me, I have seen your...

Thank you @barit1;
Excuse me, I have seen your reply just now.

You implied that there is 2.5% change for each 1% N1. Although you noted that this is for high power region, I extended this...
Forum: Tech Log
18th Aug 2013, 18:56
Replies: 4
Views: 2,039
Posted By ex902

ICAO's LTO power settings vs N1

Hi,

Particularly in the emission studies I frequently encounter this power settings issue. According to the ICAO the standard power settins are:

7% idle
30% approach
85% climb
100% takeoff
...
Forum: Tech Log
13th Oct 2010, 09:56
Replies: 0
Views: 723
Posted By ex902

wind calculation

hi,
I found some wind speed calculations according to altitude.
"h is altitude in 1000 ft"

a) wind speed (knot) = 2h + 47
b) wind speed (knot) = 1.5h + 36 (for 0-14000 ft) and 2.5h + 22 (for...
Forum: Canada
20th Aug 2010, 06:44
Replies: 0
Views: 701
Posted By ex902

research possibility (airlines and university)

Hello,

Could it be possible, could be someone here who likes to contribute a research related to generating fuel consumption models during descent, effects of flight path angle and thereby...
Forum: Tech Log
4th Apr 2010, 10:20
Replies: 12
Views: 4,436
Posted By ex902

Dear Fredgrav, thank you. you stated very well,...

Dear Fredgrav, thank you.
you stated very well, that I missed the weight and idle thrust relation and the bleed air as well. normaly we just can learn what books say, yet no book says what you...
Forum: Tech Log
4th Apr 2010, 10:09
Replies: 12
Views: 4,436
Posted By ex902

Dear Intruder, actually I am trying to figure out...

Dear Intruder, actually I am trying to figure out engine power usage during different phases of flight to use in one of my study. I am not a pilot, just interesting in gas turbines.
Forum: Tech Log
4th Apr 2010, 10:06
Replies: 12
Views: 4,436
Posted By ex902

thank you Wizofoz. I also heard about that...

thank you Wizofoz.

I also heard about that there is another idle set, called as approach idle which is little higher than regular idle. But I guess assuming idle N1 during descend will be Ok in...
Forum: Tech Log
3rd Apr 2010, 10:10
Replies: 12
Views: 4,436
Posted By ex902

approach and idle thrusts

hi everybody,
I have three questions, if I can have answers I would be grateful.

1. I wander the thrust of engines during descent in terms of N1 or thrust.
(during taxi, engines run at idle,...
Forum: Tech Log
19th Aug 2009, 08:56
Replies: 1
Views: 956
Posted By ex902

EPR variation in diving

hello, there is a question:
how EPR changes during diving if the throttle is constant?
the answer was told as "not change". is it true ?
best regards to all...
Forum: Tech Log
24th Jun 2009, 10:35
Replies: 3
Views: 1,051
Posted By ex902

thanks for all your replies. I posted a new...

thanks for all your replies.
I posted a new message which address the parameters required.
I hope I can find something.
good days everyone.
Forum: Engineers & Technicians
18th Jun 2009, 07:35
Replies: 0
Views: 620
Posted By ex902

scientific study

hi everybody;

I am working on scientific studies about fuel efficient flight operations, emissons (ground and air), continuous descent approach and so on. working in university as a researcher. I...
Forum: Tech Log
17th Apr 2009, 07:42
Replies: 3
Views: 1,051
Posted By ex902

about flight data

hello;

1- are these flight data records (I mean records belong to the climb, cruise, descent for every flights) collected somewhere ? for ex., icao, faa, iata etc ? or just filed by the company ? ...
Forum: Tech Log
16th Apr 2009, 13:01
Replies: 3
Views: 2,319
Posted By ex902

cruise altitude

hi everybody;
this is my first message to this forum...it looks like a wide range participated forum that I felt myself in a heaven :) so first of all best wishes for everyone...

my question;
...
Showing results 1 to 19 of 19


 
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