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Old Dec 21, 2004, 07:11 PM
acannell@wwc.com
Guest
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R/C Airplane with the most payload capacity

I'm planning on getting an R/C airplane to experiment with sensors and
video cameras, etc.. I'm wondering if anyone can recommend a .60 size
airplane with great payload handling capabilities, and what a realistic
upper limit on payload capacity might be (1lb? 5lbs? 10lbs?). I don't
want to go larger than .60 scale. Also, is there a way to estimate
payload handling capability based on wing surface area, and wing
loading specs? What is the wing loading spec anyway? Is it just the
weight of the airplane over the wing surface area? And is there some
upper limit on wing loading where there is no longer lift or something?
Asa

Old Dec 21, 2004, 09:11 PM
aeropal
Guest
n/a Posts
Re: R/C Airplane with the most payload capacity

Aerial photography forums:
http://www.rcgroups.com/forums/forum...s=&forumid=128
http://www.rcuniverse.com/forum/Aeri...umid_81/tt.htm

It would be helpful to know the payload physical size, weight, and
estimated flight elevation above sea level.

Old Dec 21, 2004, 11:11 PM
acannell@wwc.com
Guest
n/a Posts
Re: R/C Airplane with the most payload capacity

Thanks for the links. I don't have a certain payload in mind, I am
trying to get an idea of what is feasible with a .60 size. I don't
think I would ever go above 1500 feet above sea level.

Asa

aeropal wrote:
> Aerial photography forums:
> http://www.rcgroups.com/forums/forum...s=&forumid=128
>

http://www.rcuniverse.com/forum/Aeri...umid_81/tt.htm
>
> It would be helpful to know the payload physical size, weight, and
> estimated flight elevation above sea level.


Old Dec 21, 2004, 11:11 PM
Keith Schiffner
Guest
n/a Posts
Re: R/C Airplane with the most payload capacity


<acannell@wwc.com> wrote in message
news:1103685769.063829.159180@f14g2000cwb.googlegr oups.com...
> Thanks for the links. I don't have a certain payload in
> mind, I am
> trying to get an idea of what is feasible with a .60 size.
> I don't
> think I would ever go above 1500 feet above sea level.


One of the Telemaster series of planes ought to work
then...hope you LOVE lots of wood.

--
Nefarious Necrologist 42nd Degree
Some people ride, some just like to show off their butt
jewelry once in a while.
Dum vivimus, vivamus
<3 )3~~ <3 )3~ <3 )3~
<3 )~ <3 )~


Old Dec 22, 2004, 01:11 AM
aeropal
Guest
n/a Posts
Re: R/C Airplane with the most payload capacity

Some candidates:

Senior Telemaster Kit
http://www.hobby-lobby.com/srtele.htm

World Models Super Frontier Senior ARF (mostly constructed)
http://ecsvr.com/abm/shopexd.asp?id=53

Sig Kadet Senior ARF
http://www2.towerhobbies.com/cgi-bin...&I=LXBDE9&P=ML

If this happens to be your first RC airplane, finding an experienced RC
model pilot would be advisable. Flying Model Simulator will give you a
feel for what RC model flying is like.
http://beginnerparkflyers.nexuswebs.net/index1.html

Old Dec 22, 2004, 01:11 AM
acannell@wwc.com
Guest
n/a Posts
Re: R/C Airplane with the most payload capacity

Thanks for the suggestions aeropal. I had been considering a Hangar 9
Alpha .60 Trainer RTF. Whadda ya think? The RTF kit is $389 with engine
and radio, and I can go buy it local. I had looked at the telemaster
and it does seem more payload capable (its huge), but is it overkill? I
have no idea how much payload any of these aircraft are realistically
capable of, might you have any idea?

Asa


aeropal wrote:
> Some candidates:
>
> Senior Telemaster Kit
> http://www.hobby-lobby.com/srtele.htm
>
> World Models Super Frontier Senior ARF (mostly constructed)
> http://ecsvr.com/abm/shopexd.asp?id=53
>
> Sig Kadet Senior ARF
> http://www2.towerhobbies.com/cgi-bin...&I=LXBDE9&P=ML
>
> If this happens to be your first RC airplane, finding an experienced

RC
> model pilot would be advisable. Flying Model Simulator will give you

a
> feel for what RC model flying is like.
> http://beginnerparkflyers.nexuswebs.net/index1.html


Old Dec 22, 2004, 01:11 AM
Fubar of The HillPeople
Guest
n/a Posts
Re: R/C Airplane with the most payload capacity

A Sig Kadet Senior ARF will carry a pretty decent payload. I have one that
has carried as one payload:
A micro wireless transmitter, micro camera (standard servo mounted in the
wing), 10 cell 12vAA nicad pack, 2"X3"X5" black box telemetry unit, 5 cell
6v AA nicad pack, several switches and all the wiring to hook the whole mess
together. Standard servos, rx, power pack, plane is in the stock
configuration. No mods other than hard points added for mounting the various
bits.
Powered with a Super Tigre .51 ringed engine.
http://fubar1.net/movies/wireless/blackboxtest2.wmv
http://fubar1.net/movies/wireless/Kadet%20900.wmv

The top link is airborne video from the plane while carrying all the stuff.
Altitude telemetry readout stops at 1000 feet while the plane is still
climbing.
Second link is airborne video (much higher altitude) but without telemetry
unit and 6v power pack for it.
I bet the plane would carry a small handycam without much trouble but I
would keep the aerobatics down to a minimum.

--
Dan
AMA605992
KE6ERB
http://www.fubar1.net
"I've heard the screams of the vegetables..."
Take out the "trash" to reply
"aeropal" <rcaeropal@hotmail.com> wrote in message
news:1103688810.463172.29190@f14g2000cwb.googlegro ups.com...
> Some candidates:
>
> Senior Telemaster Kit
> http://www.hobby-lobby.com/srtele.htm
>
> World Models Super Frontier Senior ARF (mostly constructed)
> http://ecsvr.com/abm/shopexd.asp?id=53
>
> Sig Kadet Senior ARF
> http://www2.towerhobbies.com/cgi-bin...&I=LXBDE9&P=ML
>
> If this happens to be your first RC airplane, finding an experienced RC
> model pilot would be advisable. Flying Model Simulator will give you a
> feel for what RC model flying is like.
> http://beginnerparkflyers.nexuswebs.net/index1.html
>



Old Dec 22, 2004, 01:11 AM
aeropal
Guest
n/a Posts
Re: R/C Airplane with the most payload capacity

As you referenced in your first post, the ounces per square foot "wing
loading" is a factor. At 7-8# and 911 Sq In wing area, the Alpha 60
calculates at 18-20 oz/sf. If the payload was around an additional 2
pounds, that would still only be around 25 oz/sf . . which is not
excessive for the estimated 1500' elevation. The higher wing loading
would require a slightly faster airspeed, however.

The $389 Hangar 9 Alpha .60 Trainer RTF is a good value for the money.
One thought is that the 4-channel JR Quattro radio may not have enough
channels to meet your needs (if remote payload equipment activation is
necessary). One trick is to couple the ailerons and rudder together on
the right stick through a Y-harness. This would open up 1 free channel
that would be operated by the former left stick rudder channel. But a
5 or 6 channel radio may be more suitable.

http://www.horizonhobby.com/Shop/ByC...ProdID=HAN2600

Old Dec 22, 2004, 01:11 AM
acannell@wwc.com
Guest
n/a Posts
Re: R/C Airplane with the most payload capacity

Thanks for the info aeropal. I'm interested in how you are using the
wing loading to determine whats realistic given the atlitude. Would you
be so kind as to explain what the relationship between oz/sf and
maximum payload is? I.e., why is 25 oz/sf okay at 1500'? What is the
most that is okay and how do you calculate that okay level for various
altitudes?

Asa

aeropal wrote:
> As you referenced in your first post, the ounces per square foot

"wing
> loading" is a factor. At 7-8# and 911 Sq In wing area, the Alpha 60
> calculates at 18-20 oz/sf. If the payload was around an additional 2
> pounds, that would still only be around 25 oz/sf . . which is not
> excessive for the estimated 1500' elevation. The higher wing loading
> would require a slightly faster airspeed, however.
>
> The $389 Hangar 9 Alpha .60 Trainer RTF is a good value for the

money.
> One thought is that the 4-channel JR Quattro radio may not have

enough
> channels to meet your needs (if remote payload equipment activation

is
> necessary). One trick is to couple the ailerons and rudder together

on
> the right stick through a Y-harness. This would open up 1 free

channel
> that would be operated by the former left stick rudder channel. But

a
> 5 or 6 channel radio may be more suitable.
>
>

http://www.horizonhobby.com/Shop/ByC...ProdID=HAN2600

Old Dec 22, 2004, 01:11 AM
Hugh Prescott
Guest
n/a Posts
Re: R/C Airplane with the most payload capacity

Orig telmaster with ST 71 / perry pump and carb

Fuel two 1 gallon plastic jugs strapped to the fues sides and to wing. and a
24 oz internal fuel tank. Cross country at 45 MPH. Takeoff was long but
stable. Flew nice once in the air.

total weight about 24 pounds.

Hugh


<acannell@wwc.com> wrote in message
news:1103689695.982910.316090@c13g2000cwb.googlegr oups.com...
> Thanks for the suggestions aeropal. I had been considering a Hangar 9
> Alpha .60 Trainer RTF. Whadda ya think? The RTF kit is $389 with engine
> and radio, and I can go buy it local. I had looked at the telemaster
> and it does seem more payload capable (its huge), but is it overkill? I
> have no idea how much payload any of these aircraft are realistically
> capable of, might you have any idea?
>
> Asa
>
>
> aeropal wrote:
> > Some candidates:
> >
> > Senior Telemaster Kit
> > http://www.hobby-lobby.com/srtele.htm
> >
> > World Models Super Frontier Senior ARF (mostly constructed)
> > http://ecsvr.com/abm/shopexd.asp?id=53
> >
> > Sig Kadet Senior ARF
> > http://www2.towerhobbies.com/cgi-bin...&I=LXBDE9&P=ML
> >
> > If this happens to be your first RC airplane, finding an experienced

> RC
> > model pilot would be advisable. Flying Model Simulator will give you

> a
> > feel for what RC model flying is like.
> > http://beginnerparkflyers.nexuswebs.net/index1.html

>



Old Dec 22, 2004, 01:11 AM
acannell@wwc.com
Guest
n/a Posts
Re: R/C Airplane with the most payload capacity

Wow what were you doing a UAV project of some sort? Why did you have so
much fuel? That engine is a gasoline one right?

Old Dec 22, 2004, 01:11 AM
aeropal
Guest
n/a Posts
Re: R/C Airplane with the most payload capacity

The wing loading statements are entirely personal opinion . . just
something you have to experience for yourself.

Old Dec 22, 2004, 02:50 AM
For that extra kick!
California
Joined Dec 2004
23 Posts
Uh, homeland security? Hello? Yes, I was on this site called rcgroups, and...

Maybe you could describe your application and intended payload a bit more before we go much further?
Li-Pu Batteries is offline Find More Posts by Li-Pu Batteries
Old Dec 22, 2004, 07:11 AM
The Natural Philosopher
Guest
n/a Posts
Re: R/C Airplane with the most payload capacity

acannell@wwc.com wrote:

> Thanks for the links. I don't have a certain payload in mind, I am
> trying to get an idea of what is feasible with a .60 size. I don't
> think I would ever go above 1500 feet above sea level.
>


You should be able to lift about 15lb total weight, on a 60 at least.
Maybe as much as 20Lb on a big wing area, slow, old fashioned sort of plane.

Senior telemaster is a plane I have heard of in the load carrying context.

> Asa
>
> aeropal wrote:
>
>>Aerial photography forums:
>>http://www.rcgroups.com/forums/forum...s=&forumid=128
>>

>
> http://www.rcuniverse.com/forum/Aeri...umid_81/tt.htm
>
>>It would be helpful to know the payload physical size, weight, and
>>estimated flight elevation above sea level.

>
>

Old Dec 22, 2004, 07:11 AM
Steve Banks
Guest
n/a Posts
Re: R/C Airplane with the most payload capacity

Another approach may yield larger lifting capacities, but it would require
considerably more time/skill to make work. Here's my thoughts on it:


get/make the largest flying wing you can:
here is one possible candidate from:
http://www.flyingfoam.com/products.html
Mother Ship
83" Span EPP/EPS Large Combat Flying Wing
Area: 1440 sq.in. / 4 lb.
EPS/EPP Full Kit: $90.00 / Econo Kit: $84.00
All EPP Full Kit: $130.00 / Econo Kit: $124.00

and mount a reverse rotation "pusher" engine to it. This will add a pound
or so. You might want to consider an electric so you arent vibrating as
much when taking pics, but this may degrade your lifting ability
considerably. If this is for very short flights then you can use a lighter
battery however and regain some capacity.

Install the camera pointing up. You'll have to fly inverted to take pics
but it will be protected on landings.

Launch it with a bungee catapult or somesuch.

Whatever the design, experiment (test fly) with non-expensive weight (a
camera sized cardboard box filled with rocks?) in small increments till you
get to the desired weight and are confident that you can fly with the weight
of the camera equipment.

It should have a lot more lifting capacity than a traditional plane design
because it doesn't have to carry landing gear or even a fuselage, which
means considerably less weight and drag. The flying wing design also only
needs 3 channels so the fourth channel, if you have one, can control the
camera.

Good luck, report back.



 


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