Monday, July 27, 2015

EMG-6 Flying at AirVenture 2015 Video




The EMG-6 flew during every available session during air venture 2015. However there was only one session during the very 1st day that we were able to shoot video. My son Kristian was the cameraman. This year at Oshkosh was the best year in 10 years in terms of the attendance in the ultralight area. With I think 30+ vendors also a new record. The flight operations area was very crowded and the amount of flight time was somewhat limited. Most of the flight operations windows were limited And typically we would only get 4 circuits within the traffic pattern before we were shut down. We did manage however to get a total of 4.3 hours on the aircraft at the show.

Friday, July 24, 2015

ATA Chapter Titles (System Identification)

ATA Codes as used on the EMG-6


This page provides the definitions of each chapter relating to a particular section of the aircraft. We are using a modified version of the (JASC) and (ATA) code table. This coding system helped keep track of where information is located for particular components on the aircraft.  This is simply an easy way to organize all of the information related to the aircraft.

All of the Aircraft Part Numbering System is based on this Code.
For Example Part Number 53-20-52  shown at the right

53 Fuselage Assembly

    -20 Fuselage Boom Sub Assembly

         -52 Fuselage Boom Sub Assembly Bulkhead #2


Thursday, July 16, 2015

Country Colors

Renderings of the EMG-6

Our vision for some possible color schemes for the EMG-6

Saturday, July 11, 2015

Tail Wheel Operation Video

Tail Wheel Operation Video

We've put together a simple video showing steerable the tail wheel in action. the tail wheel is connected via springs to the rudder. The spring pressure provides for good positive steering without being too stiff. In a couple of segments within the video you can see the tail wheel deflected beyond the direction of travel and the springs allow the tail wheel to simply center up without changing direction. In addition the maximum angle for the tail wheel correlates with the radius with one of the main wheel brakes locked up. This allows the airplane to be turned on a very tight radius pivoting around one of the main wheels.

Thursday, July 9, 2015

Main Landing Gear Modifications

Main Landing Gear Modification Finished

We have finished the modifications to the main landing gear to incorporate the larger 6 inch wheels and tires. 

We also moved the landing gear aft. We were able to get another hours test flight on the aircraft using this landing gear system. 

Aircraft handles so much better now. The tail comes up almost instantaneously after applying power. 

We decided to go ahead and put an extra wide stance on to the landing gear.


Steerable Tail Wheel


Steerable Tail Wheel



We've decided it's time to install the steerable tail wheel option.

We are planning to fly and demonstrate the aircraft at the EAA air venture and the necessity for being able to taxi and maneuver the aircraft on the ground is much different than operating off of our small airport with minimal traffic.


The tail wheel bracket assembly installed on the tail skid. All of the design is intended to be able to retrofit from one type of landing gear to another with minimal effort.


Main Landing Gear Modification

Main Landing Gear Modification

In the last video we looked at the results of moving the landing gear axle position aft. Moving the axles back to the forward position was necessary and as a new landing gear had to be manufactured. we also decided to move the landing gear to provide for a little narrower track, approximately 3 inches narrower. And we decided to lower the aircraft by another inch and a half.

Wednesday, July 8, 2015

Getting Started

  How to Get Started Building the EMG-6


1  Follow the Project

Progress Blog

Bookmark the progress page and follow along as we design, build, and fly the EMG-6. This progress blog contains most of the up-to-date information about what is happening within the company and the project. For more information about how to get the most out of the progress blog, Click Here.

If you do nothing else make sure that you follow the project. Subscribe to the YouTube channel. Subscribe to the Blog

YouTube Channel

Link to and subscribe to the YouTube channel . The YouTube channel contains multiple videos on designing, building, and flying the EMG-6.

Register

Subscribe to our blog by entering your email in the sidebar on the right of every page. This will allow us to inform you of any important new information. Be assured that we are very sensitive to spam and do not send information unless it's very important.

Electric Aircraft Survey

Take the Electric aircraft Survey And view the survey results about the EMG-6 and Electric Aircraft in general. An Advanced survey is also availible for greater details if your intrested

2 Join the Team

Join The Team Become a Member

By becoming a member you have access to all of the construction drawings that are currently available. You will receive a password to a online database that will allow access from your computer to be able to view, download, and print all of the drawings in an (A) size format. This will allow you to print them on your home computer. In addition to PDF drawings you will have access to 3-D models that you can download for free in E- Drawings which will assist you in the building process. The drawing database continues to grow on a daily basis. in addition to the drawing database you will now have access to customer support, drawing updates, service bulletins, building documentation, and priority access to purchasing components and parts.

Thursday, July 2, 2015

Prototype 2 (Wing Construction)


Wings

We have been back in the shop working on the prototype number 2 aircraft getting it ready for the EAA air venture show in Oshkosh Wisconsin. We wanted to be able to show the dope and fabric version of the aircraft at the show as well as the ultralight version. In this picture here are starting to finish up the wing tip are

Although the primary structure is very close to the same as the ultralight version there are many modifications that are done to reduce the total amount of drag on the airframe. In this picture here we see the trailing edge at the wing tip and the transition to to the very end of the wing tip.









Wednesday, July 1, 2015

Failed Propeller Design Test


4 Bladed Propeller Test


We were wanting to do some tests on the aircraft after analyzing the propeller that were currently using. for test purposes we wanted to increase the number of blades. And for the simplicity factor making (2) two bladed propellers was simpler than trying to manufacturer a 3 bladed propeller.

With this configuration we could simply increase the bolt length through the hub and test the (2) 2 bladed propellers as if it was a 4 bladed propeller.




After installing the propeller we did some test runs and found that we were way over the amount of propeller area that we needed to be. Using the mahogany and yellow poplar mix was still extremely heavy and during the manufacturing process we were kind of under the assumption that this was going to be a test that would fail.

We were able to gather some baseline propeller information that we can use in the future for prop loading.

Even though the propeller design and testing was a complete failure from the standpoint of having a usable product we will share with you the process that we went through to get to the point that we could actually test the propeller. This was from the blog 2 weeks earlier.

New 4 Bladed Propeller for the Polini 250

We have designed a new 4 bladed propeller. Basically ju
st two 2 bladed propellers bolted together. Since we are still in the testing phases for the Polini 250 we will probably be trying several different configurations of propeller to optimize its performance for the EMG-6. this blade will be a 48 inch diameter x 26 inch pitch x 4 blades. the 2 blade propeller that is on the EMG-6 right now is a 48×30. As the engine has begun to break can we are now under loading the engine slightly getting right around 7700 RPM. We have about maximized the blade size for a 2 blade propeller and should be able to substantially improve the climb performance by going to a 4 blade.