Trike Test Flight; Pup Show Up

Today, while testing a customer's yellow trike, another ultralight showed up.  I played with him; not sure if he really saw me.

What a nice day to fly!  Light wind; clear skies; fall colors; 

Shortly after liftoff, the plane stalled, and then glanced hard into the runway...

Let's all learn from this: a Belite trike had a landing accident yesterday. 

My first thought after it occurred was that I would not take pictures; nor would I blog.  That was an expected first reaction; but incorrect.  I saw it happen; I can still see the whole sequence of events like a motion picture, in my mind.  With permission of the customer pilot, I am now blogging on what happened.

No one was hurt; and the plane was not badly damaged.  And I'm weirdly pleased with how the nosewheel took the blow and then failed in a manner which protected the pilot and the remainder of the airframe.

This particular airplane was equipped with the very strong Compact Radial Engine MZ-201.  I have flown this particular plane many times; we'd sold it and upgraded several features of the plane, including the engine.  We'd also added an inexpensive Second Chantz ballistic chute.

A transitioning pilot was practicing a takeoff roll in the bright yellow Belite.  Although this particular roll was to achieve a height of no more than about 6 inches; it didn't work out that way.  The pilot had been practicing taxiing and had demonstrated proficiency in low and high speed taxiing -- it was time to focus on the transitional takeoff attitude.   

I observed the plane rotate; the pilot quickly leveled the wings.  But by then, the plane was already quite a few feet off the ground and climbing...

In order to cancel the climb, the transitioning pilot cut power, and then the plane angled back towards the ground at a descent angle of perhaps 7 or 8 degrees.  This was probably an inadvertent departure stall.  The plane struck the runway very hard on the nosewheel, which folded under the airplane.  The plane skidded to a stop, briefly tipped sidewise and up onto the left wing, then settled back to the ground.  The main gear were still intact.  It was as if the plane was kneeling forward on its broken nosewheel.

By the time I had made it over to the plane, my customer friend had climbed out of the plane.  He was absolutely fine:  not a scratch, not a bruise.  He was even in amazingly good spirits, all things considered.

We rolled the plane back to the hangar. 

Here's an inventory of the damage:


Carbon Fiber firewall:  undamaged
Left Wing front spar (it hit the ground):  undamaged  (the spars are open and we can easily inspect on inside)
Engine:  undamaged (sheared blades and PSRU provide really good protection to engine)
Propeller blades:  destroyed
Propeller hub:  undamaged
Nosewheel landing gear:  folded under and destroyed
Nosewheel aluminum / delrin assembly and wheel:  no damage whatsoever, even after scraping along ground, but jammed against muffler
Left wing carbon fiber spar, which struck ground:  absolutely no damage
Left / Right nosewheel landing gear braces:  folded under, destroyed
Fuselage front cross member:  1/2 inch bend
Instrument panel bottom cross member (receives nose wheel landing gear strut)  1/4 inch bend

Here's a closeup of the bottom damage:

Nosewheel Destroyed on Belite Trike

 Here's the same thing, after removal of the nosewheel.  This clearly shows how the nosewheel strut has absorbed the blow, along with the nosewheel cross brace struts:

Bent nosewheel strut on Belite, with wheel removed

Look at the above picture very closely, one more time.  You can see the following:

a) bent nosewheel strut
b) bent cross braces
c) very slight bend in fuselage cross brace member (pushed back about 1/2 inch)

Just to make it crystal clear, here's a photo which shows the fuselage cross brace member:

Here's the basic process to repair the airplane:

1. Unbolt the nosewheel strut from the plane.  It has a bolt in the fuselage cross brace member (bolt hole visible in above pic) and below the instrument panel (not pictured).  Then remove.

2.  Remove fabric from front bottom of airplane.

3.  Cut out bent cross tube.

4.  Cut and weld in replacement section and nosewheel strut receiver.  Use doublers as necessary.

5.  Repair fabric.

6.  Insert new landing gear strut and cross braces.

7.  Replace propeller blades.
  
8.  Inspect & fly.

How did the nosewheel strut perform under this failure condition? 
Everything worked as planned. 

a) The landing gear did not 'jam' up and into the cabin.  Both the lower fuselage cross member and the top receiver cross member exhibited backwards force, but very little bending.

b)  The landing gear did fold underneath and backwards.   In fact, a careful inspection of the nosewheel strut shows that it had gross bending failure at two places, and a minor bend at a third place.  These bends each absorbed substantial energy from the impact, shielding the pilot.

c)  After the landing gear folded under the plane, the plane then skidded along the ground.  The plane did not flip over.

d)  The main landing gear were not damaged or affected.

e)  The 4130 ChromAloy fuselage provided 100% protection to the pilot.  (The 3 point safety harness was an essential piece of his protection.  His torso could not roll forward.)

f)  The damage is easy to repair.  We already had replacement parts in stock.

This happened yesterday.  With the exception of the propeller replacement, the bird should be ready to fly again tomorrow.

Another Saturday Breakfast Run

I enjoyed flying to Benton (Stearman Field) with Paul Fiebich for breakfast last Saturday.  Great time!  Here's some pics which Paul took of my yellow Belite Trike.  I'll post some pics of Paul's airplane soon too.

Belite Trike over nice house

Belite on short final

And here's a pic that Paul took while I flew overhead.  What was I doing?  How was he holding the camera?

Belite Fun Flying

After Paul left, I did a quick two way run with my GPS in order to verify cruise speed.  With a 28HP engine, this airplane trued at 56 mph.  I thoroughly enjoy this plane.  It's a very nice FAR Part 103 ultralight aircraft.

Stearman Field & the $100 Hamburger (make that a $1.50 hamburger)

Today's post is short and sweet -- just a little lunch time flying over to Stearman Field.

I can fly from my home base (Wichita Gliderport, home of Belite Aircraft) over to Stearman Field in about 5 minutes.  As a result, it makes a great lunch destination, and I consume about a $1.50 of gas on the round trip in my ultralight aircraft.  Awesome.

Stearman Field used to be Benton Airport.  I paid it my first visit about 30 years ago, shortly after I got my private ticket and needed a plane to rent.  It had a small dingy office, fuel for sale, and a mechanic somewhere in the shed in the back.  The runway was lined with some homes.

That was then... today, Stearman Field is a busy place, with a new office/restaurant; an outdoor eating area, many new hangars, new homes, new runway extensions, instrument approach... the new owners have made a world of difference.

The restaurant is great -- providing a feel of flying nostalgia along with awesome greasy breakfasts and wonderful burgers for lunch.  I've slipped in there several times in the last month.  I managed to get over there before Oshkosh, and I had flown over in the yellow trike. 

Here's a photo of the lunch counter, along with all the airplane nostalgia:

Nice, right?

Folks couldn't help but stop and look at the Cub Yellow Trike, and I took their pic from my dining table:

The Belite Trike is a great vehicle for taking in the local airstrips.  It looks and flies like a real airplane, and it sure makes everyone stop and look at it.

You can read more about Stearman Field by clicking on this link.

You can read more about our Trike by clicking on this link.

Thank you, and enjoy your meal! 

An Afternoon Flight with two Ultralight Aircraft

I gave Terry a call.

"Hi Terry,

I have to do a fuel consumption check on the Yellow Trike.  If I fly over to your house, will you fly your Kitfox Lite and join me for some flying time?"


Terry answers:


"Yes, I have to check to see if the strip is mowed, but that should work fine."

I take off in my yellow Belite Trike and head over to Terry's strip, about a 20 minute flight to the east:

I'm soon over his strip, circling while he gets his plane ready for flight.  I circle for 10 minutes while Terry unfolds the wings and gets his engine started.  (He recently upgraded to the big 50HP Hirth).


I snap some pictures from my vantage point.

A couple of minutes later, Terry started his takeoff roll.  I had a perfect view from on top, and I snapped several pictures of the ultralight aircraft shooting through the field.  A wonderful view of Kansas aviation, a small plane rapidly accelerating through a hayfield:

And a moment later, Terry's Kitfox Lite was airborne.

And a moment later, the ultralight aircraft was over the end of the grass strip.

Terry climbed rapidly and joined formation with me.  We made some turns, and took lots of pictures of each other.  Although it was well over 90 degrees on the ground, the wind over my shoulders, and the coooler temperatures aloft, made for a very comfortable flight.  Here's a pic of Terry, flying off my left wing:

I like that pic.

Terry is holding around 55% power to slow down with me.  I'm holding about 90% power to keep up with him.  (Terry's flying with a 50HP Hirth twin cylinder engine, I'm flying with a 28HP single lung Hirth engine.) Even so, we flit up to about 1500 feet AGL.  The temperature is much nicer than on the ground; the air is reasonably calm, and it just feels good to be a pair of airplanes roaming around Kansas.

I don't know why, but Terry decides to fly his airplane through the struts of my airplane.  I capture the event in a photograph:

More time passes, and I land.  Terry greases a landing right after mine.  Here he is on short final, having cleared the bean field in the background:

After carefully measuring my fuel consumption, I've got to put my yellow Belite Trike away in the hangar.

Terry and I talk for a few minutes.  He takes off, and heads back home as well.

Wonderful flight.  Thanks Terry, for flying with me.

-- James