UL Power Aircraft Engines, ASTM Standards Update, with Robert Helms.

UL Power Aircraft Engines, ASTM Standards Update, with Robert Helms.
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UL520T available as ASTM compliant version - ASTM, turbo, UL520T, ULPower Aero Engines
ULPower Aero Engines, have been spinning props since 2006. Up to now, these engines have been categorized as “experimental”.
The newest UL520T however , which was released for commercial production in January 2021, is also available as ASTM version. Since the UL520T is basically a normal UL520 but now with turbo charger, the ASTM version is also available for the UL520i an UL520IS. What does ASTM compliant mean ?
ASTM was originally known as the American Society of the International Association for Testing and Materials when it was created in 1898 by Pennsylvania Railroad engineers and scientists. Its purpose was to address and prevent the frequent rail breaks that were plaguing the industry by developing standards that would ensure higher quality rail products.
Today, ASTM develops and publishes technical standards with the goal of enhancing performance and safety over a wide range of products, materials, systems, and services. Thousands of ASTM standards are upheld all over the world, each with their own unique number.
ASTM F2339 describes the minimum requirements for the design and manufacture of reciprocating spark ignition engines for light sport aircraft and has been accepted by the FAA and EASA .
The UL520TC is designed ,produced and tested in accordance with the ASTM F2339-19 standard.
This standard is basically a quality standard similar to ,for example, ISO9001 but ASTM also covers more technical criteria which are similar to the EASA(CS-E) standard.
The main difference between ASTM and EASA is that the test runs are not supervised by an EASA official.
An ASTM product certification is not only “product based” but also covers a continued production quality control system forcing the applicant to a defined level of traceability.
A complete design control system with implementation of processes and a quality control system are essential to achieve the Declaration of Compliance.
Following tests have been carried out (and passed) to meet the standard:
Data Requirements:
Manuals, parts list, traceability have been updated.
Design criteria :
Material specification sheets were created.
Fuel and Induction System is designed to minimize the accretion of ice, to prevent obstruction of air or fuel, to prevent damage from hydraulic lock on starting, to prevent fire.
Dual ECU system to accommodate single failures of the electrical circuit (DO-160 / DO-178 / DO-254 / ASTM F3153 )
Ignition system with a dual-ignition system with at least two spark plugs for each cylinder and two separate electric circuits with separate sources of electrical energy was designed.
Lubrication System is designed and constructed so that it will function properly in all flight attitudes and atmospheric conditions in which the engine is expected to operate.
Calibration, vibration, detonation, accelerated overhaul (an endurance test that simulates TBO) and ultimate load test were done
Concession evaluation system which covers
A traceability system for materials and parts
Inspection criteria for all parts
Assembly and acceptance testing process
A document with an overview of the ASTM requirements, the EASA requirements and how ULPower deals with the requested quotas is available upon request.
The UL520TC engine is essentially the same but comes with dual ECU, and goes through further documentation to achieve ASTM F2339 compliance.
It goes without saying , that the entire range of ULPower engines will somewhat benefit from this approach, since there is a huge commonality of parts amongst all type of engines.
www.ulpower.com
www.bydanjohnson.com
www.ultralightflyer.com

[@philpotter6388]

Hahahaha! Finally someone who can out talk Dan! Tickled to see UL making such progress!

[@edaycock3505]

Too funny. What a powerful (and light) engine. Can't wait to visit them at Oshkosh next month!

[@rudolfabelin383]

Dear UL Power. I am duly impressed. I'm former aviation industry, MFI Malmö Flygindustri - Sweden), now IT... Found that there is one of our aircraft MFI 9, but in the home build version, that has your engine. To put it plainly, you are a breath of fresh air in this section. Best Greetings Rudolf Abelin Former technical manager MFI

[@golfbravowhiskey8669]

Love my ul350is. I’ve had 3 in different planes. 2 z750’s and a sonex. Amazing power and reliability.

[@twest344]

I'm interested in building a sonex with 350is. Is your build documented online? thanks

[@Dragonrc.]

Glad I ran across a video of the airplane I want to build that uses your engines.

[@insolentstickleback3266]

Outstanding!

[@politicalsheepdog]

After seeing Jon Humberd's UL Powered Zenith Zenith 701, UL looks like a really good option for Sport Pilot Planes. They are expensive engines but they are supposed to be lighter and there is a dealer fairly close to me so that's another plus.

[@tripleseven8361]

Great video… Very informative… Thanks!

[@JamesSmith-op7yc]

New poweplants, very good!

[@mcorrive12]

Wow Dan... this guy made your job easy! 😆 Really great info and interview! I'm dreaming of a Zenith CH 750 CruZer build and weighing my engine options. 👍

[@alexwonner7469]

Looks great competition for Rotax on the way.... good for prices....

[@JEMPL27]

UL Power rules !!!!!

[@timstarks3714]

Nice emgine

[@telace1]

Does this new ul520t use fadec...I heard something about an ecm

[@josephcovino9697]

I've got a question for anyone kind enough to answer. I'm an older old school pilot and have heard of LSA before, but what is ALSA ???

[@rsallen13]

SLSA-Special Light Sport Aircraft

[@user-dp9pg7cp7s]

😍

[@odorizedramblings4660]

Has ULPower eliminated the problems with hypereutectic pistons, widely varying cylinder bore dimensions, spark plug fouling, and a complete lack of QC? I am very interested in the UL350is for my rv12is. But, it is widely known the issues I bring up. What has UL done to eliminate these issues? The Rotax 912is will not be used on my aircraft. Edge Performance possibly will! I want to know if ULPower has addressed their issues, and if so, is it throughout their entire product line. The UL350IS is the powerplant I want to use. But I will not be using it if there is no consistency in cylinder wall clearance, no forged pistons, and a fuel map that runs so rich it fouls plugs.

[@foesfly3047]

I'm watching these issues as well and am currently undecided between the 260 and 350. I thought the spark plug fowling was due to lead, not fuel and that lead deposits are also a problem on the valves. Like you, I'd like to know I can trust this substantial investment to serve me well, for a long time.

[@paulslevinsky580]

I thought hypereutectic castings were next-level technology, where the silica forms wear pads in the piston skirts to greatly reduce friction and extend TBO. The batch injection concept with pools of standing fuel sounds like a bad choice for any kind of engine with performance goals loftier than a garden tractor.

[@markdoan1472]

Im guessing you have never owned an airplane / engine nor lived with their exceptional reliability wherein the concerns you state are null .. match fuel to engine and fly

[@augustz]

Are these issues when running with mogas or avgas 100LL or similar? They have warnings in their manuals about 100LL which references increased deposits in combustion chamber, sedimentation in lubrication system and wear on valve and valve seats if you run 100LL. You also need to change out oil and use a special oil if you are going to be doing AVGAS 100LL.

[@plantpower3048]

are these the ones that quit on take off?

[@efanclublolsmaforlife2501]

$22,000 for 97 hp no thanks

[@tonylam9548]

There are definitely disadvantages teaming up with big companies, high overheads and lots of share holders to please. Your engine have not really broke any new grounds in cost. I am glad the high RPM been fixed, it is not so suitable for slow airplanes.Air cooling is simpler, but make inferior cabin heater, I froze enough in leaky 172 to know I want liquid cooling if I can.

[@chippyjohn1]

I find it hilarious when yanks talk about not having a carburetor as though ECU's are a new thing.

[@DanFrederiksen]

Make a 10kg turbofan jet. Operation clean sweep. Until we have UFO disclosure, then all bets are off.

[@mikeryan6277]

Why do they use Automotive type spark plug instead of Aircraft Type, seem like your just encouraging a boot to pop off.