Performance: Books, Exams, Questions & Courses

[ClearReverse]

What was the MEP question? do you have the details

[Dotun]

Those were the correct answer, cant remember the questions now.

Regards
DMan

[G-SPOTs Lost]

A hopefully positive reply! thanks chaps.

The MEP question was something along the lines of what is the rate of climb, refer to graph blah blah blah. The rest of the information is as described at the top of the graph.

Pertinent figures were:

PA 14000
Temp -20
Aircraft Mass 4000lbs
Mxture fully rich

one of the answers was 1280 ft which looked pretty good
other answers probably related to temp +20, the dotted line which indicated a leaner mixture and one other.

The MRJT Question was a mass of 50k kg Antikid inop 15kt tailwind, dry runway what was the minimum acceptable runway length?

A couple of interesting questions on the effect of clearway and stopway on the effects on the balanced field figures on the graph. Had to consider the two correction tables and describe what was the effect on V1 and field limited TOM. Caught me by surprise a little bit as I'd managed to get a lot of feedback material from all the schools and it wasn't covered on any of them.

Anyway thanks for replying

[Charlie Zulu]

G-SPOT,

Can you remember any of those interesting questions you speak of at the end of your last post?

I have my Performance exam next month and wouldn't mind knowing what I could be up against! I'm currently going through the Bristol OLQB as well as lots of feedback papers that I have from the brush up course in July. I decided to take Performance at a later date as I wasn't ready for it.

Incidentially did you take the PoF exam yesterday? If so was there anything unexpected contained within? Yes another one I decided I wasn't ready for.

Best wishes,

Richard.

[Charlie Zulu]

Fuel Flow Changes (Performance)

Hi All,

Please can someone confirm which of the following formula I should use for change in fuel flow when the aircraft mass changes?

For example:

Two identical turbojets are at the same altitude and same speed and have the same specific fuel consumption. Plane A weighs 130,000 kg and has a fuel flow of 4,300kg/hr. If plane B weighs 115,000kg/hr. What is its fuel flow:

a. 3804kg/hr
b. 4044kg/hr
c. 3364kg/hr
d. 3530kg/hr

I am using the formula:

( new weight / old weight ) * old fuel flow

This gives me an answer of (a) which is the correct answer in one set of feedback (for various questions along these lines).

However another set of feedback I have seen shows the formula as:

( ( new weight / old weight ) squared ) * old fuel flow

This would give the answer as 3364kg/hr.

I am pretty sure it is the first formula (the one which doesn't square the result of the weight division) but would like some confirmation in regards to this type of question...

Many many thanks in advance.

Best wishes,

Richard.

PS. Is there anyone on pprune attending the examination venue at Gatwick on the 5th December? I'm sitting Principles of Flight and Performance that day.

[Alex Whittingham]

The consensus view is (a), the confusion over the other possibility dating from very early on in the JAA exams and arising from some misleading information in a certain school's notes. Discussed in depth here

[Charlie Zulu]

Many thanks for the explanation Alex and also the link to the previous string of discussion. I should have carried out a search and I would have found the question in full discussed within.

All of the question banks / papers that I have seen give the answer as (a) but it was a set of questions from a certain school that caused the confusion for me.

Many thanks again.

[DTTogaLI]

Buffet onset boundary Chart (performance)

Hi, a simple question..
It tell us the values for low speed stall and mach buffet or shock stall for various masses/altitude?


tnx.

[pugzi]

more importantly it tells you the mach number for the low speed and high speed buffet. Good for find aerodynamic and manouvre ceilings

Pugs

[tinmouse]

Performance tuition

Hi Folks,

If anyone knows where I can get One-to-one tuition in the London area for Performance, do please let me know.

Thanks
Tinmouse.

[rocketboots]

My Freind

Get yourself down to Bournemouth for a weekend.Go see Pete Swatton of GTS. What he doesn`t know of Perf isn`t worth knowing.

Enjoy.

[tinmouse]

Thanks rocketboots,

I may have to do that, if I don't find anyone in London.

[Steve Tindle]

We can help

I cant myself but i know 2 men that can and they are the best in the business.
You will have to travel to either Swindon or Oxford take your pick?
Let me know if you are interested.
Any other subjects give me a shout and I'm sure i can help you out
Cheers Steve

[tinmouse]

Performance, help!!

Hi Steve,

I sent you a PM, I could do with some help with performance to guarantee a pass as its my last subject and last sitting! I'm willing to go to them also. I'm looking for about 1 to 2 weeks tuition. Whatever it takes.

I would appreciate it.

Kindest regards,
Tinmouse.

[tinmouse]

Performance tuition

Hi all,

I’m just putting out one more post for One-on One Performance tuition. If anyone has received any one-on one tuition with performance in the passed, please do let me know, I’d appreciate it a great deal. I’m also willing to travel.

Thanks again.
Tinmouse.

[flyingcamel]

I believe Steve Francis does one to one Performance tuition. He works for OAT media at the moment but does do seminars for Met and Performance on a fairly regular basis. I went to a Met one a month or so ago and it was very good. You maybe able to find his email online or get the generic office email on OAT's website.

The Camel

[Steve Tindle]

Tinmouse check your PM's I have replied now mate sorry for the delay but i have been away for a while.

The contacts you requested are in an e mail to your private account.

Cheers mate good luck with your exams.
If you need any more assistance in any subject give me a shout
Steve

[chrisbl]

Best text book on aircraft performance

Anyone have any recomendations re above . Doing just this with the one I have.
Many thanks

[tonypool]

Oxford Aviation performance book made performance very easy to understand. I also have a set of Naples study notes and that was well written and just backed up what I learnt from the Oxford book.

Good luck as I was well pleased to have passed this exam as in my opinion it is not an easy one to get your head around.

[scroggs]

Try a search. this is just one of the relevant threads I found.

Scroggs