Well today i was wondering  is it possible to fly a rc plane on other celestial bodies like moon and mars and what designes would be better their than here and how would the experience be lets see what cool Ideas you give.

for one thing i  can surely say.... NO

guess u bunked your classes in school
there is no air in space... ( thats y it is called space )

NO AIR
NO THRUST
NO Airspeed
NO LIFT

in short ...... a total NOoooo

if u planning for rocket powered RC with own Oxidiser and fuel.... may be u can with thrust vectoring.....

but again u can say No..... as the frequency( not an  electronics/ physics guy) requires material  mediun to travel.... ( may be i am wrong here)

ADMIN/ MOD edit: this is/may be a interesting topic of discussion and lead to  nice development.. request to change the title to a specific one..!

AIRPLANE = mean which need air 

moon = no air 

Quote from: AEROVISHWA on July 21, 2012, 09:28:37 PM
as the frequency( not an  electronics/ physics guy) requires material  mediun to travel.... ( may be i am wrong here)

Very much so. Radio waves do not need a "medium" to travel. Otherwise you could not have ANY communication in space. And that would also mean data to and from space probes.

Earlier, people could not understand this phenomenon and coined a word "ether" for the medium  that was  not understood then.

Yep, no RC in the space.

Rockets build their thrust in the earth's atmosphere itself, escape gravity's influence and travel in the space freely. There's no air-friction aka drag there, so you can't build thrust.

Mars has atmosphere and less of gravity, so , RC aeroplanes can be flown there, while 'Spirit' and 'Opportunity' watches over  , i remember doing some work on flying in martian atmos back in the nineties, here is the link, from the drop down you can change to martian atmos and see the lift, drag etc, also cater to gravity. any question after seeing the applet, please shoot, anyone interested in the code let me now.

here is the downloadable version
http://www.grc.nasa.gov/WWW/k-12/FoilSim/index.html

to select Mars follow the image

hyd_quad..."Rockets build their thrust in the earth's atmosphere itself, escape gravity's influence and travel in the space freely. There's no air-friction aka drag there, so you can't build thrust."

thrust can be built there.. there are many examples. ionic thrusters is one of them i know..
there are many.. i think,even rockets can build thrust there,but i cant explain. i remember there is some impulse theory on Neuton baba's law "every action has equal and opposite reaction". i think it will justify.
seniors, drag me to conclusion

Yes, Newton's third law is what exactly used to generate thrust. Liquid nitrogen is used in space walking, you release it in one direction, the liquid quickly changes into the gaseous state and you move in the other.

On the other hand, I thought the concept of ether was because they weren't able to explain why the speed of light was same in all directions.

Oh my little grey matter! How could I conclude that thrust CAN'T be built in space? Sorry all, but thanks for the correction.

Vineet

u have an article here on what type of RC developed for mars....

http://en.wikipedia.org/wiki/Entomopter

To all of you who are talking about space.
Read the topic properly it says CELESTIAL BODIES. Moon and Mars both have an atmosphere to all of you who don't know.
And all of you who are talking about escape velocity are not talking about the topic.
So lets take a U turn and return back to the topic.

Can this become an intresting topic?

I feel a change in gravity would mean a change in the density of lift producing air (atmosphere, medium, ether, that provides lift).

Assuming lesser the gravity on place like moon, lesser the density of air.  Thinner air would provide less lift and less drag, either of the wing airspeed or area will need to be increased to maintain lift. But then since the gravity is less, the amount of lift required would be lesser to keep the craft afloat, so would the parameters cancel out each other? I don't know, it starts getting tricky here....

Which would you prefer earth or other celestial bodies

There is a pseudo atmosphere on the moon... which is actually particles coming out from radio active decay, meteorites etc.. however, the density of the air/ gases is negligible compared to that of earth.
Yes the aircraft will certainly stay airborne for a longer time if u chuck it. However u may require a motor if the size of a actual aircraft engine to may be generate a minute thrust.
Plus, there will be no control..as control surfaces will become ineffective.