Revolutionary New Part 103 Ultralight

Revolutionary? That’s a bold claim. But I think I can back it up. Here is an excerpt from our forthcoming press release:

Dayton, Ohio: Aeromarine is making the bold claim that their new Part 103 ultralight aircraft is truly revolutionary. “This is not your 1980s ultralight’ claims designer Chip W. Erwin. “I know, I was there. Our new Merlin Lite has real aircraft features and appeal: 7 windows, a door, a cockpit, baggage capacity and space, an instrument panel. And the list goes on”.

The Merlin Lite is based on the Merlin, a popular single seat personal sport aircraft that costs under $40k and cruises at 120mph. The cockpit size of the Merlin Lite is nearly the same size and capacity as the Merlin but the powerplant is scaled down and the wing aspect ratio is increased.

The extensive features INCLUDED or available with the Merlin Lite are not often found on your typical tube & fabric ultralight:

FULL EFIS WITH ARTIFICIAL HORIZON AND GPS
DOOR
7 WINDOWS
AIR VENTS
CABIN HEAT AND DEFROSTER
ELECTRIC TRIM
ALL ALUMINUM
DUAL INDEPENDENT HYDRAULIC BRAKES
TUNDRA TIRES
TRICYCLE OR TAILDRAGGER
12 V POWER SUPPLY – PHONE/IPAD CHARGER
PUSHROD CONTROLS WITH BEARINGS
5 POSITION FLAPS
3D TAPERED WING, OPTIONAL SPEED WING
QUALIFIES AS A MOTORGLIDER
DUAL IGNITION LIQUID-COOLED ENGINE
OPTIONAL ELECTRIC POWER (COMING SOON)
5 GALLON WING TANK, EXPANDABLE TO 10 GAL.
BRS 500 RESCUE SYSTEM
EARTHX BATTERY
LARGE BAGGAGE AREA
2 OR 3-BLADE GROUND ADJUSTABLE CARBON PROPELLER
ELECTRIC START

The Merlin Lite meets the FAA Part 103 rules which means no license, medical, registration or certification required. The first public display will be at the Midwest Expo in Mt. Vernon, Illinois beginning September 10, 2020.

Here are some photos form the shop. The BRS is now installed. This week will be the big push to finish the Merlin Lite so we can bring it to our booth at the Midwest Expo. There is still a lot of work to do but I think we are on target. Tundra tire axles are being welded up this week. Fuel tank is nearly finished. Panel is finished. Controls are mostly finished. When I am in Dayton I am working long hours on this aircraft and with a customer Merlin build program as well so writing blogs get delayed. But I will make an effort to post more progress photos.

 

There will be many doubters about our ability to meet the tight Part 103 parameters.  Fine, bring it on! I will bring some scales to the Midwest Expo. Anyone can check their weight on the scales to verify accuracy then we will weigh the Merlin Lite. Currently we are 4.2 lbs under the limit! Others will question our ability to meet the 24 knot stall speed restriction with only a 22 foot wing span. Well, they are right. But what they don’t know is our first Merlin Lite has the speed wing. To meet Part 103 we will install our UL wing pictured above. This wing has a larger wing area and a very long-span 3-hinge Fowler flap. Part 103 rules allow lift enhancing devices. Furthermore, the stall speed is measured with only a 170 lb pilot and maybe a quart of fuel. So bring it on! Revolutionary new ultralight? I think so.

See the Merlin Lite page. I have posted updated pricing and features/options list.

 

Road Trip – Finally. And a Merlin Lite update

I have been locked down in our Florida pool home on a private ski lake for over a month. I am only skiing once a day. Sigh. And the last container of aircraft and floats has been quarantined in our Dayton hangar. But from May 1st with the restrictions lifting I can finally make a long road trip starting with the transport of a set of floats and some 737 jacks to Dayton.

Loaded and leaving sunny warm Florida.

Our Dayton hangar has been totally packed with 3 Merlins, 1 Zigolo, a Merlin Lite, and a set of 1450 floats. The Merlin Lite has been moved out for engine installation and now I am delivering the 1450 floats and a Merlin QBK.

Builder Don helped a lot with the packing. Motive: Make more room for his Merlin build.

First stop from Dayton was Green Bay to hand over the 1450 floats. Then on to St. Paul, MN to meet our newest builder Frank. And while in St. Paul I stopped by BRS to pick up the new Merlin Lite 500 parachute.

Frank in St. Paul with his new Merlin QBK.

Now buried in this post a small Merlin Lite update: 1) We ran the engine! That Polini 250DS is super! And the clutch makes it very smooth. 2) New longer wings are in design. This will allow us to meet the 26 nm stall speed. 3) Next step is to install the control system and BRS. We have started this work now and hope to complete it this month. We can begin our test flight program with the short wings and not worry about the stall speed. We know we can meet that parameter. The big task is to verify our empty weight when the aircraft is completely finished. As it stands now we have weighed the components seperatly and are good. Have a look at the first engine test run: https://www.youtube.com/watch?v=hmrd4nU9_qw

Excerpt from the Merlin Lite wing strength calculations
Polini 250DS: Note tempoary fuel tank
Right side. Electric start of course

This will not be your 1980s ultralight: Liquid-cooled, dual ignition, electric start Polini engine. Instrument panel with full EFIS and iPad with Foreflight moving map. Electric trim. All aluminum cantilevered wing airframe. Fully-enclosed cockpit. 3-blade carbon ground-adjustable propeller. BRS rescue system. It even has brakes! Nothing else like it in Part 103 class. Not even close. We are pushing hard to complete and fly it.

Inexpensive yet very sophisticated glass panel. In an ultralight! Air speed, altimeter, G meter, VSI, artificial horizon all on EFIS and more. iPad has Foreflight installed. Wing tip strobes and nav lights. Even a USB power source! My other ultralight has a rain gauge for an ASI. What a contrast.

Deland Air Show