Aerodynamics discussion board?

[Mathieu]

Hi all,
Was just thinking that maybe daddyhobby.com should start an aerodynamics discussion board.. Im sure many of us RCers are interested in the science of what we do.. Notice not many threads on such subjects.. It'll be interesting.. What do you guys think?

[ufoNEW]

?????????????????????????

[Ghostfit]

I feel the NACA 1034SE airfoils are way more effective than the Selig7036 in a 15knots wind, the laminar flow of the NACA have a much later separation point .... blab, blab blab.....blab...



ASLEEP YET ?

[GTR35]

Wah Mr tony...very chim
pls dont give this kind of lecture at syfc hor...if not i will

[Sunstorm]

I feel the NACA 1034SE airfoils are way more effective than the Selig7036 in a 15knots wind, the laminar flow of the NACA have a much later separation point .... blab, blab blab.....blab...



ASLEEP YET ?

Already this hobby has so many big words.... now there are even bigger words...

[Nicholas]

whos in yfc ? i didnt learn anything about specific airfoils there ... or nt i'll be like

[Ghostfit]

Wah Mr tony...very chim
pls dont give this kind of lecture at syfc hor...if not i will

...my lecture usually very short and sharp ! ...for FAI f2D, ...90% of the time it consist of this sentence:

"Whoever starts his engine first gets to fly first !!!"

For aerodynamics, Mr long nose plier will conduct it so you insomniacs guys can have your lullaby.

[Mathieu]

Hahaha. A reply after more than 4 years. I don't even remember starting this thread.

[Nicholas]

lol where got ... its who call ops fly first la !

[GTR35]

Nicholas.....I agree with u
so i guess u are in control line....
For RC its different..got very relax life

[Cycross]

I feel the NACA 1034SE airfoils are way more effective than the Selig7036 in a 15knots wind, the laminar flow of the NACA have a much later separation point .... blab, blab blab.....blab...



ASLEEP YET ?

Where's your charts to compare???!! CL/AOA, Cd/AOA, Mq/AOA, Reynolds?

[joe yap]

May be a good idea, but who will use them for practical uses? Most folks still fly ARFs anyway. Some even pay to get thier ARFs built.

[Cycross]

Usaf Datcom

OMG, I actually fell for a thread started so long ago!

On a serious note, avid future aerodynamicists wannabes might like to know that I have recently this year donated a set of documents to Singapore Polytechnic Aerospace Engineering Labs for public education usage.

The documents are the sets of charts known as the USAF DATCOM (Data Compendium) 1979, the derivative of which is the Digital USAF DATCOM programs. It was written for the USAF by Mcdonnell Douglas then to gauge the performance of part or full aircraft profiles, right up to the F4 Phantom types. It has been known to be used for modelling more recent aircraft realistically up to the F-15 Eagle. These equations are also useable in MATLAB. Also, this is not military classified material despite the details within, because ironically it was funded by US public funds. Eventually, such mathematical models were superceded by CFD, as they are better at modelling high alpha behaviour.

The documents now should be with a lecturer at the big Hangar workshop housing one civilian plane inside. I have expressedly indicated to the lecturer that the document is for open use and not horded, as my wish was to interest more young people to dream of flight, as I did my younger years.

If this interests you, please approach this lecturer and ask to see it, and cheem yourself to sleep

[viper1990]

May be a good idea, but who will use them from practical uses? Most folks still fly ARFs anyway. Some even pay to get thier ARFs built.

Ok i have to strongly agree on this sentence here!

But the best way (i belive) to learn about aerodynamics and the science behind even... is to go to library find books about airfoils,aerodynamic equations....blah blah blah. I do read really in depth about all those stuffs and do apply them on my planes but the end of the day we are not going to design a real life boeing plane so......., really up to your own interest to read up on all those "chim" stuffs

There are equations and illustration more down towards rc planes..., i also read them. I would like to share some websites:

Rc basics about almost everything for newbie

http://www.ezonemag.com/pages/faq/a109.shtml

Mh airfoils

http://www.mh-aerotools.de/airfoils/

Pitch speed fomular

http://www.rcgroups.com/forums/showthread.php?t=287994

Thoery or basics about ducted fans

http://www.hobby-bench-buddy.ca/BetterFly/RC_Designs_EDF.htm

My favourite webby! formulas for finding CG,MAC,Wingloading,calculating dihedral...blah blah

http://www.airfieldmodels.com/information_source/math_and_science_of_model_aircraft/formulas/index.htm

Those pictures below is what i do read also..., observe different types of airfoils, watch their stalling angles, best airfoil suited for different reynolds no. and apply them on plane and start flying and experimenting!! Once again i'm not designing a real life commercial jet airliner! i just wanna get the best out of my rc planes.

[Ghostfit]

Nicholas.....I agree with u
so i guess u are in control line....
For RC its different..got very relax life

Now I know why you guys are so interested in RC !

You're in Schools YFC or open unit ?

lol where got ... its who call ops fly first la !

Thats for the Ops side ! ...I was refering to the CCA students side !

I guess you did your BFC there huh ? ...PPL ?