ya la engine ada 2 type
1.otto cycle
2.bryton cycle

ottocycle is a concept for pistone engine where constant volume is applied. manakala, bryton cycle is a constant pressure engine.
in ottocycle a complete cycle happen in one places but for turbine engine, all the cycle occur continously in deffrent area e.g compressor, combustion,turbine and exhaust.

p/s to ahaw :- nak seribu daya, x nak seribu dalih, sedangkan a/c cleaner pun boleh jadi engineer, takkan kita TJT x bleh kot

YAKIN BOLEH!!!!!
PASTI BOLEH!!!

Good work ashraf. I'm impressed!

Now, this is HOW you would answer such a question!

simultaneously kan? kan? hehe..penting tu ayat tu..

waliu maintainence guy oso need tostudy so complex stuff?

If you need to maintain 'complex stuffs', surelyyou need to know and study one, right?

yes its true... if you make a mistake you probably will kill about hundred people on board....

and your career in aviation!

Both are so scaryy...buty nvrmind if u love the job u will do it with dedication huhuhh and responsibility huhuhuhuhuhu

ayak double post

This post has been edited by ahaw: Aug 8 2006, 07:32 PM

1. roughly, brayton cycle can be expressed with the help of a working cycle diagram...

a Turbine engine working flow represent as working cycle on a pressure - volume diagram. ok first, starting from Point A represents air at the atmospheric pressure that is compressed along the line AB.
from b to c, heat is added to the air by introducing and burning the fuel at *constant pressure *(diff. from piston engine which is constant volume) thus increase the volume of air.
from point c to d the combustion gases expand, part of the expanded energy (combustion gases expand) is turned into mechanical power which is done by turbine and the rest discharge at high rate thus giving the thrust.

2. for the flat rated engine this is the first time i heard about it.... anyway jazzy can you briefly explain about International Standard Atmosphere + 15/ ISA+15 ? i cant answer the the effect of the temperature rise to the engine, because i dont really understand what it mean....

anyway thats from me

*some say, you can get the result (easa part 66) exam 2 weeks after the exam date.... is it true?

This post has been edited by ahaw: Aug 8 2006, 07:35 PM


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wahh with picture... good explaination...
this is one of DCA engine essay question...
GOOD LUCK AHAW

waaaaa a nice picture of brayton cycle ...hhohohohoho weh otto cycle got tak??? huhuhhuhh

ahaw,
very good explanation of the brayton cycle...

about the ISA+15. Okay, think in this manner: The temperature is now higher(hotter). When the temperature is high, what is the affect on the air properties?
If these properties of the air changes, what will be the effect on the engine thrust?

engine thrust also change... because one of factor affecting thrust is temperature right..

dude just went for my exam ..... 24 august ..... all i can say is huhhuhuhh the question is a lil bit hard laa..but the airleg was okay ...only the engine mcq was a lil bit hard ....huhuh pray for me yaa my frend..... by the way what is reduxing dude ... there one question asking what is reduxing ....huhuhu to all my frend cepat cepat la gie exam the quuestion are starting to change it is starting to get a lil bit confusing huhuhuhh okay ...ahaw and mr ashraf gambate gambate .....


p/s: i was supprise there were a lot people try for this eventhough they are quite old ....respect to them and it was very encouraging them to give me some nice advise huhuhh come guys lets strife for successs huhuhuh

apply already.... good luck Kabadi84

@jazzy : ok

wahhh there a lot of our frend applied this month exam ....must be exciting ..me just got a lil bit time to study...was sick a bout a week before the exam ...ahaw n mr ashraf u are taking c type kan??? do emphasize on ignition, propeller , fuel system , and mterial and prosess...there a lot of question on that topic dude and it need a deep understanding .huhuhuh bt actually all are questions huhuhhuuh...

p/s: thanks ahaw ...hope everything pass huhuhuhhhhu

just want to bring back this thread... so anyone already prepare for easa by the end of this year or early next year? care to share ya question bank?

both b1.1 and b2

This post has been edited by ahaw: Nov 21 2006, 09:27 PM

i got a question bank
jast come to my house ahaw ...

These are core engine subjects, definitely must be empasized la!

Good luck to all the guys that will be going for the exam!