HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Jun 20, 2009, 07:23 AM
Registered User
Braila, Romania
Joined Oct 2007
273 Posts
Discussion
Flying wings on water !

Hi everybody !

I am designing a AP ( aerial photography) plane that should be able to operate on water.

My favorite land operated AP models are flying wings. Yet, I haven't seen any flying wing on water!

I will ask before going deeper into this project:

Is there any aerodynamic handicap for flying wings to take off from water ? Anybody have seen flying wings as waterplanes ?

Thank you !

Aries
bujora is offline Find More Posts by bujora
Reply With Quote
Sign up now
to remove ads between posts
Old Jun 20, 2009, 08:41 AM
Omphaloskeptic
SaulOhio's Avatar
Joined Feb 2005
930 Posts
I tried to get my Stryker to ROW, but it seemed to heavy for that to be practical. But there are a few water planes that almost qualify as flying wings. Have a look at the Twinkle.



And there is THIS ONE:


I suggest searching the "Let's hear it from the electric guys... Roll call, photos please!" thread.
SaulOhio is offline Find More Posts by SaulOhio
Last edited by SaulOhio; Jun 20, 2009 at 10:47 AM.
Reply With Quote
Old Jun 20, 2009, 08:56 AM
Capitalist
fnlrun's Avatar
United States, CA, Redding
Joined Sep 2008
1,856 Posts
thats kind of a funky but good looking, odd-ball, only a mother could love plane.

I like it
fnlrun is offline Find More Posts by fnlrun
Reply With Quote
Old Jun 20, 2009, 11:22 AM
Registered User
lake flyer's Avatar
Joined Nov 2005
4,400 Posts
A flying wing on floats .

Here ya go !
lake flyer is offline Find More Posts by lake flyer
Reply With Quote
Old Jun 20, 2009, 02:07 PM
Registered User
Braila, Romania
Joined Oct 2007
273 Posts
Thank you guys ! My fears that water and flying wings don't go together very well are gone now !

Nice looking wings !

I still have to decide what shape, design, will provide maximum protection for the camera in case of a bad landing or wind gusts
bujora is offline Find More Posts by bujora
Reply With Quote
Old Jun 21, 2009, 08:42 AM
Registered User
Airboatflyingshp's Avatar
B'ham UK
Joined Oct 2005
2,990 Posts
Bujora hi in the sticky there should be a link to a previous thread on this topic...we have had this come up before search also for chat on waves/ piercing.
Deltas give good speed range stability.. designs like the beast are in effect planks on floats.

For stability you may have to think along the lines of twinfloats/hulls ..
size payload and propulsion will all have to be balanced in your final design...for an AP wing ship then a pusher set up might be preferred unless you fin mount your props Seawind /N Star, Polaris style or go for separate motor pylons.

Dow slab Blue/pink foam might give you a good start in respect of protecting your goodies and providing built in buoyancy and strength. http://www.rcgroups.com/forums/showthread.php?t=1052570 waterproofing AP kit

Another approach Burnelli flying wing fuselage http://www.rcgroups.com/forums/showthread.php?t=1045859
Airboatflyingshp is offline Find More Posts by Airboatflyingshp
Last edited by Airboatflyingshp; Jun 21, 2009 at 11:17 AM.
Reply With Quote
Old Jun 22, 2009, 08:52 AM
Registered User
Norway
Joined Jan 2009
83 Posts
Flying wings on water

As I understand it, a main adventage a flying ving have is that there is no body, wich saves weight. A float plane/flying boat do need a hull(body) and then that adventage is lost.

Another consideration is elvator authority. In a conventional design the elevator provides pitch controll (aerodynamic) that can overcome the hydrodynamic forces as the plane aproaches take off speed. Rotation for take off can then be done with elevator movement. A flying wing with less elevator authority then need a better hull design to work well.

A flying wing from water can be done, but probably need more effort to design than a conventional layout to work well.

Sveinung
Himat is offline Find More Posts by Himat
Reply With Quote
Old Jun 22, 2009, 11:24 AM
Registered User
Braila, Romania
Joined Oct 2007
273 Posts
Thank you again !

Very interesting information for a freshman on water like me !

Another good reason taken into consieration when I chose flying wings was the easy way to breake down and transport. My latest design:

http://www.rcgroups.com/forums/showt...8#post11936694

Starting from this project, a boat like body with a well placed step and some wing tips pointed down for balancing would be my first choice.

I also have some canard scketches (for backwards CG , pusher configuration and why not, the excelent gliding and penetration) and the last preference (and easiest to implement )will be a twin engine design . A Twinstar like this beauty :
Multiplex Twinstar 2 Floatplane conversion (3 min 29 sec)


Aries
bujora is offline Find More Posts by bujora
Reply With Quote
Old Jun 22, 2009, 01:00 PM
Registered User
Airboatflyingshp's Avatar
B'ham UK
Joined Oct 2005
2,990 Posts
Bujora ..a point of waterplane terminology but that is not a floatplane its a Flyingboat that is to say its fuselage is designed to sit directly in the water........the floatplane sits on a separate floating hull with its fuselage above the water................................... now that all holds well until you come to a design like the Blackburn B20 ....see the sticky. Where the float is a drop down extension of the hull! The idea being to give prop spray clearance without the drag of a full depth hull in the air.

The Be3 sits with its wing on the water being a wet wing/hull design ...study it and read the accounts of how it takes off in the links...it could also point a way to producing a Canard........... though the guys in the Canard thread are working on one.
I posted a couple of ideas in the AP thread but how about a design like the Pelican or a Sport version of the Westland pterodactyl flying boat. http://www.rcgroups.com/forums/showt...and+flyingboat

You can also use hydro planes to generate lift for a hull /wing............. I have an idea based on elements of a Ray Maelstrom design.... look in vintage and free flight http://www.rcgroups.com/forums/showt...=538243&page=3 also look for this beauty Grosswing
Airboatflyingshp is offline Find More Posts by Airboatflyingshp
Last edited by Airboatflyingshp; Jun 22, 2009 at 05:11 PM.
Reply With Quote
Old Jun 22, 2009, 05:46 PM
Registered User
Airboatflyingshp's Avatar
B'ham UK
Joined Oct 2005
2,990 Posts
http://www.rcgroups.com/forums/showthread.php?t=1068778 ...potential???
Airboatflyingshp is offline Find More Posts by Airboatflyingshp
Reply With Quote
Old Jun 22, 2009, 09:06 PM
We shall serve the Lord
kingsflyer's Avatar
United States, TX, Kingsland
Joined Sep 2005
4,824 Posts
Check out the Polaris thread.

http://www.rcgroups.com/forums/showthread.php?t=922465

More like a flying delta than a flying wing, but a great flying plane none the less.

McD
kingsflyer is offline Find More Posts by kingsflyer
RCG Plus Member
Latest blog entry: LEDs on my T-28
Reply With Quote
Old Jun 22, 2009, 10:51 PM
Registered User
Braila, Romania
Joined Oct 2007
273 Posts
Wow ! What a wealth of information ! Love the drop down extension of the hull ! And the wet wing/hull is another great ideea to minimize drag and even add some lift!
Both great ideeas to experiment on a cheap small scale models !
Airboatflyingshp, you have completely changed the perspective on my little project!

McD, Polaris is a beauty ! The only thing missing is the motor off gliding capabilities. And if you change the wing for better gliding, you get a Seawind like model !
bujora is offline Find More Posts by bujora
Reply With Quote
Old Jun 23, 2009, 01:28 AM
balls to the walls
Joined Jun 2009
16 Posts
Try a flying W. they are slow, stable, and can carry quite a load. ill post pics of mine tomorrow.
natergater is offline Find More Posts by natergater
Last edited by natergater; Jun 23, 2009 at 01:47 AM. Reason: Photo
Reply With Quote
Old Jun 23, 2009, 07:22 AM
Registered User
Airboatflyingshp's Avatar
B'ham UK
Joined Oct 2005
2,990 Posts
I can help with gross wing I have more info.

Yep look at the W wings........... essentially as used on some ecranoplans..check the links on the last pages of the sticky.

Leonardo model and full size http://www.das-nurfluegelteam.de/leonardo_2000.html

AP link here http://www.rcgroups.com/forums/showthread.php?t=1021546

W -wing experimental glider below.
Airboatflyingshp is offline Find More Posts by Airboatflyingshp
Last edited by Airboatflyingshp; Jun 23, 2009 at 12:25 PM.
Reply With Quote
Old Jun 23, 2009, 12:40 PM
Registered User
Airboatflyingshp's Avatar
B'ham UK
Joined Oct 2005
2,990 Posts
Laddie M's Aquabird http://www.rcuniverse.com/forum/m_3870319/tm.htm W wing flyingboat. www.rcgroups.com/forums/showthread.php?t=612744

Aquabird in Vyborg Russia (1 min 58 sec)


http://www.rcmplans.com/index.php?ma...=index&cPath=6
Airboatflyingshp is offline Find More Posts by Airboatflyingshp
Last edited by Airboatflyingshp; Jun 23, 2009 at 01:37 PM.
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Flying Wings on Sunday sloonz Arizona Electric Festival 57 Feb 03, 2007 10:09 AM
flying wings on realflight G2 sylair Simulators 6 Dec 24, 2003 07:34 AM
Prop Noise on Flying Wings pcaffeldt Foamies (Kits) 17 Aug 22, 2002 11:10 PM
WIng tips on flying wings Viper Pilot Power Systems 6 May 28, 2002 04:50 PM
Break props on flying wings? Red Baron 47 Electric Plane Talk 4 Aug 03, 2001 10:49 AM