farri

Flyer,

keep in mind I was originaly trying to address the post,"I Will Stall If I Turn Downwind" and I can`t cover every detail of the principals of flight each time I reply.

The G forces make no difference to the stalling angle,only to the stalling speed,when an aircraft is coming out of a dive it wants to continue in the direction it was traveling, if the pilot pulls it up too steeply the G force indeed goes up however because the aircraft wants to continue on it`s original path,this path now becomes the new angle of attack, so if that angle of attack is exceeded the aircraft will stall, if not it won`t.

I preffer not to talk about the stalling angle in angles of degrees because the angle at which an aerofoil stalls can not be determined by the pilot, from the aircraft.

I have already said a couple of times the airspeed indicator is simply a reference point,it will not stop anyone from stalling,however it`s the best we have at present.

farri.

Vk2auu,

Can you please tell me what you mean by your statement on inertia of the thruster,

I don`t understand what you are trying to say.

farr.

Yen,

There has been several attempts to try to give you some answers by several people,Peloris32 being the most lengthy.

There is too much throry involved to be able to cover the subject fully on this forum,

As you asked about flaps,I was assuming that you understood what the chordline was and that the chordline changed as the flaps were deployed.

As for the stalling angle, the designer works all this out,that`s what I meant by the aircraft manual, the stalling angle is of no importantance to the pilot flying the aircraft because, as you point out, we don`t have an angle meter,the closest we have is an airspeed indicator,therefore you need to know the airspeeds the aircraft stalls at.

I pointed out washout because I didn`t know if you were aware of it,maby I missunderstood your question,it may be someone with a degree in aeronautics that you need.

I hope you find the answer to your question,

farri.

Yen,

The difference in angle of attack at the wing tip on any aircraft is called "WASH OUT" or "WASH IN".

"Wash out" is used on most aircraft and this gives a lower angle of attack at the wing tip which allows the wing tip to stall slightly later than the root of the wing making the aircraft more stable in the stall and not wanting to imediatly drop a wing,giving the pilot more time to react.

With your C172,refer to the aircraft manual for differences in angle, however, the area where the flaps are will stall first due to it`s greater angle of attack but only when the "CRITICAL ANGLE OF ATTACK HAS BEEN EXCEEDED".

farri.

Hi All,

With the amount of missundestanding I read on this issue,I am amazed we don`t have more accidents.

The forum is here to exchange views and ideas and that`s fair enough, however this section, which is about, Student pilots and Instruction,should be kept,to,Questions and factual answers,anyone submiting a reply should use the correct facts unless they are asking a question or we are only confusing the issues which makes the situation more dangerous.

The Fact,

An aircraft will only stall,"WHEN THE CRITICAL ANGLE OF ATTACK HAS BEEN EXCEEDED".

Definition.

The angle of attack,is,"THE ANGLE OF THE CHORDLINE TO THE RELATIVE AIRFLOW".

The chordline,is,"THE LINE THAT RUNS FROM THE LEADING EDGE TO THE TRAILING EDGE OF THE AEROFOIL".

The relative airflow,is,"THE AIRFLOW DIRECTLY OPPOSITE THE FLIGHT PATH OF THE AIRCRAFT"

That`s it,the stall has nothing to do with the direction of the wind or any reference to the ground or the speed of the aircraft over the ground,the only reference required is the Airspeed Indicator,which if correct will indicate the angle of attact.

Anyone who does not see, what I call ,the big picture and understand this yet,should,either,ask more questions or go back to BAK,or a book called,"THE MECHANICS OF FLIGHT" writer by, A.C. Kermode.

Please keep the general discussion for the right section.

farri. :hittinghead:

Down wind turns.

This is an easy one.

An aircraft will only stall," WHEN THE CRITICAL ANGLE OF ATTACK HAS BEEN EXCEEDED"

Definition.

Angle of attack is, "THE ANGLE OF THE CHORDLINE TO THE RELATIVE AIRFLOW"

Chordline is,"THE LINE RUNNING FROM THE LEADING EDGE TO THE TRAILING EDGE OF THE AEROFOIL".

Relative airflow is,"THE AIRFLOW, FLOWING DIRECTLY OPPOSITE THE FLIGHT PATH OF THE AIRCRAFT".

Full Stop.

farri

Landing Thruster.

Hi Striker,

Good to see someone is still prepared to train in what we used to call an "Ultralight Aircraft"

Your method of approach and landing is just fine and by using that method you are making every approach a simulated engine failure and good landings will follow with time and practise.

Don`t become too obsessed with the perfect landind because with the infinate number of variables there are you may never get the same situation twice and it is just a case of adjustinj to the situation that is occuring at the time.

With all the different types that I`ve flown over the years I still choose to own and fly a Maxair Drifter.

Regards,

farri.

Some thing in comon.

Hi Friapuk,

Good on you.

And hello to you also,Mathew Ker, I`m sure you both will be an asset to the flying scene and those who need your assistance.

Take Care.

farri.

Landings.

For statistical and certificate reasons,fine.

For maintenance reasons, 1 good landing and 10 bad ones?.

farri. :hittinghead:

A man has recently had a heart transplant and asks his doctor what he should do to remain fit,to this the doctor replies,"go on a strict diet,give up smoking and get plenty of sleep.

"But what about sex"?, the patient asks.

"Only with your wife,we don`t want you getting too excited" says the doctor. :hittinghead:

farri.

Congratulations Chucky.

Chucky,

Congratulations,It`s a great experience isn`t it?.

Forever more, make every flight a learning experience,be aware of everything thing that is going on around you,try to become one with the aircraft and remember you are the one doing the flying,the aircraft is only coming along for the ride.

Flying is easy,it`s only the bit at the bottom that realy hurts, if you get it wrong.

Regards,

farri.

Yenn,

If a sideslip is used to loose the greatest amount of height for the shortest distance traveled over the ground then the lowest airspeed possible is required therefore the nose needs to be held up to obtain the required speed,different in every aircraft.

I doubt that many airspeed indicators would read accuratly enough to simply work on the given figure,each pilot must know and understand the manouvre and their aircraft

thoroughly before atempting it near the ground.

we all know that it`s not just about figures,how many pilots have their airspeed indicators calibrated regularly.

The presure side of the fuselage is a good question.

Regards,

farri.

Stalls in slips on landing.

Hi All,

Shouldn`t this thread be directed to a Zenith 701 instructor so as to hopefully get the correct information.

It`s fine to make everyone think about it however not everyone has the correct answers there by confusing the issue and as we all know each aircraft has it`s own performance characteristics.

Cheers,

farri.

Hi,ZoneMagic,

Welcome to the world of Recreational Aviation.

I like you ,also thought I would never be able to afford to learn to fly, then one day I met a guy who was building an Ultralight aircraft,there were no others in our area,which is the Cairns QLD area, at that time and they were just starting to appear around the country so I decided this was the way to go and built my own ultralight aircraft then had to teach myself to fly it as twin seat instruction and twin seat aircraft were not legal at that time even though they were around and instructors were very few and far between.

I have been flying fo 22 years now and have flown many types over the years but I still choose to own and fly a 95-25 Maxair Drifter,just for the sheer joy of it.

The story of my flying history is quite long so I`ll just leave it at that for now.

Take care they do bite.

Regards,farri.

A rose by by any other name is but a rose.

Hi All,

I come from the early days of the AUF.when our aircraft were called Ultralights.

I`ve never objected to changing our name to the RAA, however, I believe it`s not so much the aircraft we fly or the name we choose that give us a bad name ,it`s some of the pilots who fly them and the way they fly.

We can call our organization what ever we like but the best way to improve our image is to be better pilots and reduce the accident rate.

It appears to me that even with better rules and better training and aircraft,that we now have,the accident rate is still,just too high.

I have flow many types,from a Scout to the Zenair 701 and I still choose to own and fly a 95-25 Maxair Drifter because I fly for fun and I don`t realy care what anyone chooses to call it.

Regards,

farri. :rotary:

Tony,

You are correct.

Regards,

farri

Hi,Fly,

I hold a level 2 maintenance authority and I`ve just finished making and fitting new throtle cables to my new Rotax 503.

If you`re not getting idle either your inner cable is sticking,the cable is too short, the cable adjustment is not correct or your idle adjustment screw is too far in,not allowing the slide to come all the way down,start by making sure that the screw is out far enough to allow the slide to go all the way to the bottom.

If the inner cable is too short and not allowing the slide to go all the way down you can cut back some of the outer cable which will make the inner cable longer, then take up any slack by adjusting the screw that the cable sits in on top of the carby.

You should not be able to see any of the carby slide when the throtle is fully applied.

If I`ve been of any assistance,please let me know.

Regards,

farri.

Flygirltake2,

I agree with the KIS principal however I know from experience that the aviation system in this country is not easy to change.

Cloud seperation is "estimated" by the pilot and therefore will not be acurate,regardles.

I don`t think it realy matters for cloud seperation,however I see no reason why verticle distance should be measured in feet now that we`ve gone metric,other than, at present, it quickly allows us to differentiate between verticle and horizontal.

Maybe they won`t change it because there would be too many altimetres to replace???. (Joking).

Regards.

Flygirltake2,

That`s an easy one.

It because the people who make the rules want to confuse us so we keep asking silly questions.

Cheers.

Hi Flygirltake2,

Just ask the questions, you never know we just might have the answers.

All the best to you.

Cheers.

What about,Wise, Cracks ???????.........

A man and his wife are walking past the animal pavilion and the sign in front of a stud bull reads,"This bull mated 200 times last year",on reading this,the wife says to her husband,"you could learn somthing from that".

A little furthur on,a sign in front of another bull,reads,"This bull mated 365 days last year",the wife was realy impressed this time and said to him,"Wow you ceartinaly could learn somthing from that bull."

To that he answered,"Certainly dear, but ask him,did he have the same cow every day?. ;)

The Airliner abruptly stopped taxiing,turned around and returned to the gate. After a long delay,it finaly took off. A concerned passenger asked a flight attendant,"What was the problem?"

He was told by the hostie,"The pilot was worried by the noise he heard in one of the engines and it took us a while to find another pilot".;)

G`Day Skyhog,

Thank you for your information.

Regards,

farri.

Hi,

Can anyone out there put me in touch with,Andrew Campbell, a new pilot from,Nowra in NSW,He wrote an article,titled,Dreams, printed in the R/AA November 07 edition of the magazine.

Appreciated.

farri. ;)