Jeff
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Design Progress

Started May 9, 2012 0 Replies

As I have posted before my interest in the X-47 platform being a unique aircraft as well as some  models that I have done of the wing. Here is my latest progress in my modeling and creating my own…Continue

Relocate daughter board?

Started this discussion. Last reply by Jeff May 8, 2012. 3 Replies

As I see its just a connection with a 2x6 header between the APM2 and daughter board, is it feasible to make an adapter cable to relocate the daughter board? Per say if the APM2 is mounted by a motor…Continue

Need opinions.

Started this discussion. Last reply by Richard Unwin Oct 11, 2011. 14 Replies

Hey guys, I have recently began modeling a wing in SolidWorks and as of now it is coming good but I'm afraid it will be too complex to make someday realistically. As of now I do not have the…Continue

To aileron or not to aileron that is the question.

Started this discussion. Last reply by Krzysztof Bosak Oct 11, 2011. 9 Replies

Now I wanted to bring up an interesting topic that is not talked about much. What are the pros and cons of ailerons vs dihedral design?I listed a few I find to be important, have any to add?Any…Continue

 

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Jeff posted a discussion

Design Progress

As I have posted before my interest in the X-47 platform being a unique aircraft as well as some  models that I have done of the wing. Here is my latest progress in my modeling and creating my own plans to build this. When I do go to build this in the future I will be doing a top and bottom half in sections cut out of pink foam. I have been working on the cross section views that I was wanting and so far here is the progress. Wings will be cut out of separate material and elevators, ailerons,…See More
May 9, 2012
0 Comments
Jeff replied to Jeff's discussion Relocate daughter board?
"Yes Paul I have seen that thread, as you stated I thought this was a bit different seeing the original GPS would still be used.Thanks for the suggestion. Thanks Vernon, I do not know much about the communication protocols and the constraints on…"
May 8, 2012
Paul Feely replied to Jeff's discussion Relocate daughter board?
"Jeff, Similar (but slightly different) discussion going on in this thread..... http://diydrones.com/forum/topics/disabling-gps-on-daughterboard?xg_source=activity&id=705844%3ATopic%3A796562&page=1#comments Hope it helps Paul"
May 8, 2012
Vernon Barry replied to Jeff's discussion Relocate daughter board?
"It's more than just the connector-you must provide power and ground via the outer mounting pin locations. In theory it works but don't forget that this is IC2 bus data so you will be limited in the length of wire to a couple of inches…"
May 8, 2012
Jeff posted a discussion

Relocate daughter board?

As I see its just a connection with a 2x6 header between the APM2 and daughter board, is it feasible to make an adapter cable to relocate the daughter board? Per say if the APM2 is mounted by a motor or mostly surrounded by CF/fiberglass, could it help increase the GPS signal? or is there other interference that could be caused either by cable or to the APM2 that I am missing? This could even help with access to data card if the APM2 is hard to get to on airframe.Have searched forum for 30 mins…See More
May 8, 2012
3 Comments
Jeff commented on Scott Plunkett's blog post New meaning for the phrase "Don't Mess With Texas;" Texas Sheriff's office receives weaponizable drone, alarms local news station
"I watched the Montgomery video and I love how the police act as if they can hover and not be noticed and watch illegal transactions."
Nov 1, 2011
Krzysztof Bosak replied to Jeff's discussion To aileron or not to aileron that is the question.
"I am using FLEXIPILOT, not APM"
Oct 11, 2011
Stephen Wuest replied to Jeff's discussion To aileron or not to aileron that is the question.
"Ailerons make it easier to level a plane for landing. You will get more landing crashes without ailerons. This is a well known curse of beginning fliers (who may want all their controls on one stick).   You cannot create an autopilot to fly…"
Oct 11, 2011
Richard Unwin replied to Jeff's discussion Need opinions.
"Jeff, if you are starting downn the long road of rc flying have a look at the slowstik its a great plane to learn on, easy to fix and once you have got the basics sorted can be heavily modified and actually can lift quite heavy loads (ie…"
Oct 11, 2011
Ahmed Rehan replied to Jeff's discussion To aileron or not to aileron that is the question.
"Krzysztof Bosak: have you tested APM on rudder only model what is the result."
Oct 11, 2011
Jeff replied to Jeff's discussion Need opinions.
"Unfortunately as of now its only a design, I don't have the necessary equipment and experience to fly when it would be ready. I am getting a Bixler and working on that then probably moving to a very dumbed down foam version of this so when I…"
Oct 10, 2011
Bryndang replied to Jeff's discussion Need opinions.
"lets see some pictures!"
Oct 10, 2011
Jeff replied to Jeff's discussion Need opinions.
"I have a friend that makes scale models and has about 5 made already of WWII aircraft he suggested I take the 2 outer wing portions and hot wire them and then make a "box" in the center where the propulsion is and have the main structure…"
Oct 10, 2011
Richard Unwin replied to Jeff's discussion Need opinions.
"i like the fact that you are thinking ahead and planning what will happen when you try and make the wing. the reality of bringing a design into life exactly as you designed it on 3d computer is sometimes very hard.   I have been having fun…"
Oct 9, 2011
UAVOZ replied to Jeff's discussion Need opinions.
"I am going to use Solid Work to make my UAV too. got a 4x4m CNC built by my brother ready but still need the right model to start with. I started from zero so need a bit of time to learn.  Also still decide what type of material for the UAV."
Oct 8, 2011
Jeff replied to Jeff's discussion Need opinions.
"Did some more modelling in Solid Works over the weekend and this is what I came up with (still missing wingtips). Very primitive with no mechanical devices added, figured they could be implemented when it was a solid. Just a start though on the…"
Oct 2, 2011

Profile Information

About Me:
Aerospace Engineering '12
University of Michigan - Ann Arbor
Tell us a bit about your UAV interest
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Hometown:
Rochester, NY

Comment Wall (2 comments)

At 3:14pm on January 25, 2010, William Premerlani said…
Hi Jeff,

You asked about a comment I made in the DCM algorithm, concerning the determination of foward acceleration in connection with the compensation of the accelerometers for acceleration.

Since then, we have learned a lot about this topic, I really should update the document.

We found that you can ignore the forward acceleration, you can still get pretty good performance.

The reason I was not keen on the GPS information was that there is generally a time lag between change of speed and when GPS reports it.

When I was debugging another problem, I thought that maybe the forward acceleration was the culprit, so I did put in the computation of forward acceleration as the time rate of change of GPS velocity, but it did not seem to make any difference one way or another.

Best regards,
Bill Premerlani
At 5:29am on February 18, 2011, D . S said…

Hello Jeff,

 

Your comments pertaining to the X 47 B were very thought provoking. Thanks so much for sharing them .

 

Best Regards,

 

Debo

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