Cowling Test Fit

Cowling Test Fittings during “The Grand Mock-Up” & Beyond

22 June 2013 — Today I pulled out all the stops . . . or should I say I pulled out all the pieces of the build so far.  Before I am separated from my project while I spend a year in the Middle East for Uncle Sam, I wanted to get an idea of what this thing looks like put all together.

So I pulled the fuselage out into the front yard, and kept it covered while I collected the other components.  Next up was the Centersection Spar which I placed into the fuselage for the first time since I completed it about 8 months ago.

After I got the CS spar & firewall in place, I added both of the wings next.  Also, as you can see I had to throw on at least one winglet just to get an idea of how it would look.  Although it was a little awkward to get it on the end of the wing so it looked half-way normal, I think I got in the ballpark.  Well, and of course we can’t forget the canard… yes, it’s on there too!

Once I got the wings on, it was now time to fill in what gaps I could to make it look at least a little like it had some mass to it. Next came the engine cowlings.

Chap 19/23 - Wings & Cowling trial fittingChap 19/23 - Wing/spar & Cowling fit

Chap 19/23 - Wing/spar & Cowling fit

Long-EZ Project Mock-up

Chap 10/19/23 - Canard-Wing/spar-CowlingChap 10/19/23 - Canard-Wing/spar-Cowling

Chap 19/23 - Wing/spar & Cowling fitChap 10/19/23 - Canard-Wing/spar-Cowling

In the next couple of shots you can see how the lower cowling hangs down 4 inches below the stock/plans firewall.  Again, since Mike Melvill had built a NACA inlet for his engine air intake the back end of his fuselage–and subsequently the firewall–was 4 inches lower than plans [in essence making the bottom line of the fuselage continue straight until aft of the firewall].

Chap 23 - Cowling Trial FittingChap 23 - Cowling Trial Fitting

And then the following pics are more close-up shots of the upper cowling.

Chap 23 - Cowling Trial FittingChap 23 - Cowling Trial FittingChap 19/23 - Wing/spar & Cowling fit

•••

21 September 2016 —  Tonight I finally go that lower cowling mounted so that I could mark up the firewall for trim.

Mocking up lower cowling with wings & FW

I had to lean way over into the cowling in order to mark the lower line without disturbing the taped-in-place cowling.

Marking firewall for trimming

I took this shot just to get an idea of what the bottom profile of the plane will look like.

Rear profile with cowling in place

Another thing that I did that is not shown in these pics is I ran a line from one wing TE corner to the other.  This let me measure from the back face of the spar to the string to determine the sweep.  I determined that I’m only 0.1″ short at the BL23 mark at the very inboard wing, and 0.4″ short on my wings’ sweep over the entire wing span: BL175.6 vs the plans BL 176.  Again, not bad and I’ll take it!

Tomorrow,I’ll be heading down south to meet up with Marco and then we’ll both fly to Rough River in his new Long-EZ.

If you’re going to Rough River, SEE YOU THERE!

•••

Recent Posts

Project Update

Hey Guys,

So this is still it!  And yes, I continue to fight in my hope that this will be the final push –from now until Rough River– to get the main assembly of the aircraft completed.  That’s my goal.  An aggressive timeline to be sure!  After Rough River, I then expect the next few months to be finalizing any leftover punch list items and the finishing & painting! 

As you probably know, starting a few months back I had planned on knocking out a good dozen electrical related items so that I could close up the nose.  I got a bunch of those completed, but kept finding myself not being able to really close out wire runs, confirm install spacing configurations such as the pitch trim unit, etc. because I couldn’t sit in the airplane and confirm what I had dimensionally without the actual pilot’s seat in place.  I couldn’t get the pilot’s seat area done without contending with the fuel lines, driving me to complete the thigh support fuel sump.

So the immediate order of battle right now is to finish the major components in the back seat (GIB) area, primarily the oil heat system with requisite ducts, before then moving forward again to the pilot’s seat area. These mini-tasks are definitely time-consuming and a lot more slow going then planned.  But they allow me to work all this stuff while I can stand right next to the fuselage without having to deal with strakes being in the way!  

Plus, anything that I install now is just one less item that will need to be installed at some point in the future.  Obviously not as sexy as seeing major aircraft components (i.e. nose, strakes, canopy) being completed, but Oh so necessary for quality of flying later on!  Moreover, these completed tasks, in turn, will allow me to finalize the configuration of the nose components. At which point I will focus on the building the nose while concurrently finalizing the wheel pants install (nope, haven’t forgot about those!). Then the canopy install will be after that.

The struggle is REAL folks, as it continues to be busy all up in here!!

Cheers!

 

  1. Chapter 22 – It… all… matters… Leave a reply
  2. Chapter 22 – Piece of cake! Leave a reply
  3. Chapter 22 – Not so much… Leave a reply
  4. Chapter 22 – Cheat when you can! Leave a reply
  5. Chapter 22 – Back in back Leave a reply
  6. Chapter 22 – Kick plate finished! Leave a reply
  7. Chapter 22 – Play Time is Over! Leave a reply
  8. Chapter 22 – Uh, more electrons please! Leave a reply
  9. Chapter 22 – Electric all the way! Leave a reply