HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Sep 29, 2012, 09:15 AM
Promoting Model Aviation...
Murocflyer's Avatar
United States, CA, Tehachapi
Joined Nov 2005
24,921 Posts
I remember when LiPos started to become more of a reality than just a dream. People said those things were too dangerous and they should not be used.

But back on topic, have we come to the conclusion that their target goal of 5 lbs AUW, 1.5 hour duration and top speed of 70 MPH is simply not possible?
Murocflyer is offline Find More Posts by Murocflyer
Reply With Quote
Sign up now
to remove ads between posts
Old Sep 29, 2012, 10:21 AM
Promoting Model Aviation...
Murocflyer's Avatar
United States, CA, Tehachapi
Joined Nov 2005
24,921 Posts
Another thought just occurred to me. Landing zones are going to be the toughest part of this whole trip. Especially east of the Mississippi where things get crowded so a large uninhabited field to land a 10 pound plane (giving up that 5 lb is feasible) will take some acreage.

I bet they could do this if they map a route of AMA fields across the US from the west coast to the east coast. Then they could have a large field to land on and no worries about people getting in the way.

Frank
Murocflyer is offline Find More Posts by Murocflyer
Reply With Quote
Old Sep 29, 2012, 02:02 PM
buyer of the farm
United States, FL, DeLand
Joined Mar 2009
4,167 Posts
I think that people have lost sight of the fact that these are reasonable guys and they'll just change their goals as the facts come in to show that it is neither possible nor advisable to average 70 mph. They want to use foam. They want to stay under 5 lbs. I'll bet they keep those parameters and toss the 70 mph in favor of a lower target number.

Planning the route is somewhat unpredictable. Their best bet would be to get a heavy-hitter Senator to buy into their project and run interference there. Bureaucracies tend to be blindly rules-based. Only individuals can catch the enthusiasm and see the vision of these two guys, and that means you need an individual with some clout. John Mica might be a good one. He fell for the bullet train concept hook like and sinker, in spite of being a pragmatic and generally conservative man. That's the kind of combination that gets things done. I'm sure there are other good fits too.

I'm sure Rutan's scheduling of a round the world flight with an experimental aircraft was equally daunting. The cross country flight clearance is difficult but not impossible.
Rockin Robbins is offline Find More Posts by Rockin Robbins
Reply With Quote
Old Sep 29, 2012, 05:24 PM
Promoting Model Aviation...
Murocflyer's Avatar
United States, CA, Tehachapi
Joined Nov 2005
24,921 Posts
I bet the target speed will come down. And I'm not sure why they need to go 70 MPH anyway. Highways have limited access and that is not the kind of roads you want to drive on in the first place so there really is no need to go 70. 50 is much more practical.

And with 2,500 AMA clubs all around the USA, as well as fields and open lots, there should be no reason why they can't safely pull this off.

I'm kinda surprised it hasn't been done already. After all, an RC airplane flew across the Atlantic Ocean without landing, no reason we can't fly across the US landing every 1.5 hours.

Frank
Murocflyer is offline Find More Posts by Murocflyer
Reply With Quote
Old Sep 29, 2012, 05:29 PM
Wake up, feel pulse, be happy!
C₄H₁₀'s Avatar
United States, AK, Fairbanks
Joined Aug 2009
12,410 Posts
It may actually work better to go with a light, slow-moving balsa glider platform (to carry the weight of the electronic stuff) and a small extreme-performance IC engine (a la Maynard Hill).

What happens if their plane crashes and is totally destroyed, or just gets lost completely, halfway through the trip? Do they just say "Well, shoot. Time to go home " and call it a failure?
C₄H₁₀ is offline Find More Posts by C₄H₁₀
Reply With Quote
Old Sep 29, 2012, 05:44 PM
Promoting Model Aviation...
Murocflyer's Avatar
United States, CA, Tehachapi
Joined Nov 2005
24,921 Posts
I don't know what will happen. I suspect if the airplane is not repairable, game over. I mean that is the goal right? Flying across the USA in one go/trip?

I'm really surpised someone hasn't done this already by riding in the back of a pickup truck and flying their plane across the US.

Frank
Murocflyer is offline Find More Posts by Murocflyer
Reply With Quote
Old Sep 29, 2012, 06:15 PM
Build to Fly? FLY to BUILD!
Legot's Avatar
United States, AZ, Gilbert
Joined Nov 2009
1,104 Posts
I believe they're planning to have multiple identical airframes/sets of electronics just incase anything fails or gets wrecked.
IMO, it defeats the purpose having more than one airframe.

There are some guys that live an hour or so away from me that have been known for flying their airliners down rural roads from the back of their pickup truck
Legot is offline Find More Posts by Legot
Reply With Quote
Old Sep 29, 2012, 07:08 PM
Promoting Model Aviation...
Murocflyer's Avatar
United States, CA, Tehachapi
Joined Nov 2005
24,921 Posts
Quote:
Originally Posted by Legot View Post
I believe they're planning to have multiple identical airframes/sets of electronics just incase anything fails or gets wrecked.
IMO, it defeats the purpose having more than one airframe.

There are some guys that live an hour or so away from me that have been known for flying their airliners down rural roads from the back of their pickup truck
I've done that with my video camera on my plane. That is a blast!

I didn't hear the part about mutiple planes. Was that in the video?

Frank
Murocflyer is offline Find More Posts by Murocflyer
Reply With Quote
Old Sep 29, 2012, 07:38 PM
Build to Fly? FLY to BUILD!
Legot's Avatar
United States, AZ, Gilbert
Joined Nov 2009
1,104 Posts
Lol, I'd love to try it sometime, it would be exciting!

And yes, it was in one of their videos that they'd have multiple planes, I've no idea which one though.
Legot is offline Find More Posts by Legot
Reply With Quote
Old Sep 29, 2012, 07:48 PM
Registered User
United States, FL, Stuart
Joined Apr 2012
256 Posts
Quote:
Originally Posted by Murocflyer View Post
Saw a link to this on the RC Advisor web site (awesome site with tons of RC info) and checked it out.

I see these two gentlemen are planning a heck of a trip with an RC airplane. I applaud their enthusiasm and willingness to take on a challenge. Reminds me of myself back on 2008.

Anyway, two problems I see with this.

1. There is no way they are going to keep their plane under AUW of 5 lbs with a target speed of 70 MPH and a flight duration of 1.5 hours.

2. I don't think they can make this plane from only foam like they want to.

Have a look and see what you think. Please let's not get into the safety thing. We can debate that for weeks on end. Let's focus on the technical aspect of this electric powered airplane. Be interesting to hear your thoughts on it.

http://www.mygeekshow.com/usatrip/

Frank
This always impressed me:
http://news.bbc.co.uk/2/hi/europe/3145577.stm
Electrofish is offline Find More Posts by Electrofish
Reply With Quote
Old Sep 29, 2012, 08:06 PM
It's all fun till Crunch!
Capt. Crunch's Avatar
InSane Diego
Joined Jan 2002
1,957 Posts
Jasmine,
You're right, there was a Cross Country, done in the late 70's sponsored by Circus Circus of LV. It used volunteer pilots and a set of trucks to escort an IC plane of trainer configuration; All done by LOS from back of PU truck.

Also there is currently an electric plane of similar config. being flow in each of the 50 states, though not continuously, I believe they're up to 40 states now and various clubs and individuals have made donations to keep it going till it makes all 50!

I think the Rutan Voyager configuration is just right for this effort, but they will have to lower the speed to 50mph-ish to stay legal and do LOS like Maynard Hill did. FPV & auto pilot are only to be used as backups, not primary as they desire. Once the FAA gets wind of their flight, they’ll arrest them.

It will take them more like 2-3 weeks than 1, and they'll need several spare planes as accidents do happen, and landing along the freeways is a lot tougher than you think. Maynard also reported that the Hiway Patrol and police were very helpful as soon as someone explained to them what they were doing.

I really applaud Nick & his friend for their enthusiasm and wish them well, I’ll send them a link to this thread.
As they will require a ton of $$ to do this, recruiting sponsors is really required, but not until they have the first set of hardware working. If they document this correctly it could serve as a resume/masters thesis for job hunting.

And 5 lbs is crazy, they'll be lucky if they can keep it under 5 kilos!

On the bright side there is new battery technology in the works that is supposed to be up to 10x energy density in the near/mid future.

I and the SEFSD have sponsored UCSD & SDSU teams in the Cessna DBF contest for about 10 years now, and a 5 year plan is about right to get them & the designs up to speed to do something like this.

Hoping for the best,

Capt. Crunch
Capt. Crunch is offline Find More Posts by Capt. Crunch
Reply With Quote
Old Sep 29, 2012, 09:25 PM
Promoting Model Aviation...
Murocflyer's Avatar
United States, CA, Tehachapi
Joined Nov 2005
24,921 Posts
Quote:
Originally Posted by Capt. Crunch View Post
Also there is currently an electric plane of similar config. being flow in each of the 50 states, though not continuously, I believe they're up to 40 states now and various clubs and individuals have made donations to keep it going till it makes all 50!


Capt. Crunch
Man, that sounds awesome! Is this what you may be thinking about?

www.WAA-08.org

Frank
Murocflyer is offline Find More Posts by Murocflyer
Reply With Quote
Old Sep 29, 2012, 10:11 PM
Registered User
HELModels's Avatar
Joined Aug 2003
2,631 Posts
^^^^^^That's funny!

I've been watching the progress of these two guys over on DiyDrones. They arent just diving in and hoping, they are trying to learn what's involved through testing. They have an airframe they call the Shrike and they've had lots of problems, but they keep working at it.

One criticism they keep ignoring though is testing the airframe in autonomous mode at a field by a highway. They have lost contact and control on at least one prior flight.
HELModels is offline Find More Posts by HELModels
Reply With Quote
Old Sep 29, 2012, 10:15 PM
It's all fun till Crunch!
Capt. Crunch's Avatar
InSane Diego
Joined Jan 2002
1,957 Posts
Quote:
Originally Posted by Murocflyer View Post
Man, that sounds awesome! Is this what you may be thinking about?

www.WAA-08.org

Frank
That's right, I just couldn't rfemember the acronym when I was writing.

Thanks Frank,

Crunch
Capt. Crunch is offline Find More Posts by Capt. Crunch
Reply With Quote
Old Sep 30, 2012, 01:32 AM
Promoting Model Aviation...
Murocflyer's Avatar
United States, CA, Tehachapi
Joined Nov 2005
24,921 Posts
Quote:
Originally Posted by Electrofish View Post
Absolutely! That transatlantic flight was beyond a doubt a one of a kind historical flight.

Frank
Murocflyer is offline Find More Posts by Murocflyer
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
For Sale this may b interesting to someone dr rc Aircraft - Electric - Airplanes (FS/W) 1 Sep 22, 2012 12:24 PM
Question Is there an interest for a frame like this? tosjduenfs Multirotor Talk 13 Sep 02, 2012 05:09 PM
Discussion hmmm this is interesting steve wenban Slope 1 Apr 04, 2012 04:47 PM
Discussion An interesting case ... sad and tragic ... but interesting none the less ... logan5 Life, The Universe, and Politics 12 Mar 10, 2012 04:12 PM
now this would be an interesting park flyer project pico-what? Parkflyers 6 May 03, 2002 09:22 PM