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#electricaircraft

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AlcorNews<p>Un avion électrique français à fuselage porteur veut décarboner l’aviation régionale. Capable de transporter 19 passagers sur 500 km, il émet zéro CO₂ en vol. <br><a href="https://www.revolution-energetique.com/actus/cet-avion-electrique-francais-a-fuselage-porteur-veut-decarboner-laviation-regionale/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">revolution-energetique.com/act</span><span class="invisible">us/cet-avion-electrique-francais-a-fuselage-porteur-veut-decarboner-laviation-regionale/</span></a> <br><a href="https://mastodon.social/tags/Innovation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Innovation</span></a> <a href="https://mastodon.social/tags/AerospaceEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AerospaceEngineering</span></a> <a href="https://mastodon.social/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://mastodon.social/tags/SustainableAviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SustainableAviation</span></a> <a href="https://mastodon.social/tags/FrenchTech" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FrenchTech</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>Glider progress on closing out open spaces in the fuselage.</p><p>First photo shows the new fiberglass closeout panels I made this weekend. The new panels have bits of blue tape on them.</p><p>Second photo shows a fiberglass GPS antenna bracket near the top of the turtle deck.</p><p>What you don't see in the second photo are the wing spars, which will run across this space.</p><p>I am considering also making fiberglass shields to cover the autoconnect funnels, which are gray and located aft of the wing spar cutouts.</p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a> <a href="https://universeodon.com/tags/Fiberglass" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Fiberglass</span></a> <a href="https://universeodon.com/tags/Composite" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Composite</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>I need to install some anchor plates into the glider, around a blind corner (a bulkhead flange) in cramped quarters. </p><p><a href="https://www.aircraftspruce.com/catalog/hapages/anchornutsk1000.php" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">aircraftspruce.com/catalog/hap</span><span class="invisible">ages/anchornutsk1000.php</span></a></p><p>It's easy to drop these small parts, and Murphys Law dictates that they fall into an inaccessible place.</p><p>Fortunately, you can run string through the mounting lugs to serve as a lanyard.</p><p>If you install an anchor nut on metal, you use rivets. On composite panels you often embed them in epoxy.</p><p>If you work in a wood shop, you probably use tee nuts:<br><a href="https://www.aircraftspruce.com/catalog/pnpages/04-02058.php" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">aircraftspruce.com/catalog/pnp</span><span class="invisible">ages/04-02058.php</span></a></p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a> <a href="https://universeodon.com/tags/Nut" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Nut</span></a> <a href="https://universeodon.com/tags/AnchorPlate" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AnchorPlate</span></a> <a href="https://universeodon.com/tags/Lanyard" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Lanyard</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>Making glider composite parts requires time, and timing because epoxy must first cure.</p><p>Before I went to bed last night, I layed up fiberglass on simple molds to make various closeout panels.</p><p>The epoxy cured while I slept, at least enough to de-mold.</p><p>Now the parts are sitting on the glider trailer and getting warmed by the sun. In a couple hours they will be fully cured.</p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a> <a href="https://universeodon.com/tags/Fiberglass" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Fiberglass</span></a> <a href="https://universeodon.com/tags/Epoxy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Epoxy</span></a> <a href="https://universeodon.com/tags/Composite" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Composite</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>Gliders need help to get airborne.</p><p>Here's an update I pulled from an SSA (Soaring Society of America) newsletter:</p><p>"The SSA awarded several grants for projects and Bill Daniels of the White Sands Soaring Association provided an update on how grant money is advancing their winch project."</p><p>"Our thinking is shifting to power electronics, data capture and temperature management. The big battery pack which can power 40 to 50 launches on a charge is also sitting on the shop floor. The inverters are in hand. The load pins (a kind of load cell) serve as axles for the upper pulleys while measuring forces on them. They are being made on the other side of the world and should arrive in a few weeks. Various connectors and other bits arrive daily. Since everything is liquid cooled and we operate in a hot climate, we will need robust temperature management systems which are still being designed."</p><p><a href="https://www.ssa.org/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">ssa.org/</span><span class="invisible"></span></a></p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a> <a href="https://universeodon.com/tags/Winch" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Winch</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>It's time to install the turtle deck on the glider fuselage.</p><p>The octagon steel frame was useful for sanding and painting...rotating the fuselage to allow work on the underside. The octagon gets in the way of installing the turtle deck.</p><p>Previously I could grab the empty hole at the nose of the fuselage and raise/lower onto various support stands. Not anymore. The motor/spinner have filled that hole and they can't handle significant side loads. So, I need help to raise and lower the fuselage, especially now that it holds all the equipment.</p><p>The red steel frame jack is merely a large lever with a sling to support the fuselage. It's big but has lots of mechanical advantage so I don't have to exert much force.</p><p>The shark fin antenna is now only a couple inches above the floor.</p><p>Now I can install the oxygen system and add some closure panels.</p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a> <a href="https://universeodon.com/tags/Tools" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Tools</span></a> <a href="https://universeodon.com/tags/Workshop" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Workshop</span></a> <a href="https://universeodon.com/tags/Jack" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Jack</span></a> <a href="https://universeodon.com/tags/Dolly" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Dolly</span></a> <a href="https://universeodon.com/tags/Oxygen" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Oxygen</span></a> <a href="https://universeodon.com/tags/Baggage" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Baggage</span></a></p>
AlcorNews<p>Un avion français 100 % électrique sans CO₂, capable de décoller sans piste longue : autonomie 500 km, pour desservir l’inaccessible. <br><a href="https://issues.fr/drone-solaire-avec-une-envergure-plus-large-que-jumbo-jet-pourrait-voler-pendant-des-mois/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">issues.fr/drone-solaire-avec-u</span><span class="invisible">ne-envergure-plus-large-que-jumbo-jet-pourrait-voler-pendant-des-mois/</span></a> <br><a href="https://mastodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Space</span></a> <a href="https://mastodon.social/tags/Innovation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Innovation</span></a> <a href="https://mastodon.social/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://mastodon.social/tags/ZeroCO2" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ZeroCO2</span></a> <a href="https://mastodon.social/tags/RegionalFlight" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RegionalFlight</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>I need to cover exposed high-voltage, high current terminals in the glider fuselage.</p><p>My index finger and pinky are pointing to the terminals. They will be at +115VDC with respect to ground when the battery pack is connected. The safety fuse is rated at 325 amps. A 'mere' short to ground at 250 amps will keep on smoking, and smoke in the cockpit is scary bad. This is a good reason to fly with a parachute.</p><p>The second photo shows a potential solution, which was molded on a discarded paint mixing cup of the right size.</p><p>Hmmmm, what do high-voltage high-current terminals look like in an EV auto/truck? Do they have fancy thick boots for insulation?</p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a> <a href="https://universeodon.com/tags/HighVoltage" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HighVoltage</span></a> <a href="https://universeodon.com/tags/Danger" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Danger</span></a> <a href="https://universeodon.com/tags/Safety" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Safety</span></a> <a href="https://universeodon.com/tags/Insulation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Insulation</span></a> <a href="https://universeodon.com/tags/Protection" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Protection</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>Successful high power test of the glider's electric motor with the spinner and propeller installed.</p><p>I had it at full power: 4600 RPM and 150 amps at 115 volts DC. I conducted this test three times. No problems with vibrations, excessive temperature of the motor or any other components, or rapid draining of the batteries.</p><p>This is a major milestone for the electric motor system.</p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a> <a href="https://universeodon.com/tags/Motor" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Motor</span></a> <a href="https://universeodon.com/tags/Engine" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Engine</span></a> <a href="https://universeodon.com/tags/Propeller" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Propeller</span></a> <a href="https://universeodon.com/tags/Battery" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Battery</span></a> <a href="https://universeodon.com/tags/Test" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Test</span></a> <a href="https://universeodon.com/tags/Milestone" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Milestone</span></a> <a href="https://universeodon.com/tags/Success" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Success</span></a> <a href="https://universeodon.com/tags/Goals" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Goals</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>The glider battery is nearing the end of its charging cycle.</p><p>The battery management system has told the charger to reduce charging current while the 14 cells are being balanced to the same voltage. In this photo some cells are properly balanced, but not all. Once all the LED's go out, then all cells are properly balanced and the charging is complete.</p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/ExperimentalAviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ExperimentalAviation</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a> <a href="https://universeodon.com/tags/Battery" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Battery</span></a> <a href="https://universeodon.com/tags/Lithium" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Lithium</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>A slightly longer video that shows me starting up the motor, running it at relatively low RPM and amperage, slowing it down and stopping it... and then the system automatically Parks the motor and propeller in the correct orientation. You cannot see the motor from this location. When I perform high power test outdoors, I will set up a camera that looks at the propeller and spinner. </p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/ExperimentalAviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ExperimentalAviation</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/Oshkosh" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Oshkosh</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>A short video showing what happens behind me when I arm the motor switch. You hear the contactor click, cooling fans start, and a status light comes on at the side of the high power motor controller. </p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/ExperimentalAviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ExperimentalAviation</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/Oshkosh" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Oshkosh</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>Successful indoor low-power test of the glider's electric motor system.</p><p>(I need to tidy up some wiring, but everything is working nominally.)</p><p>The first two comments will contain short, somewhat boring videos of these indoor tests.</p><p>Soon, I'll move the fuselage outdoors, tie it down securely, add the propeller and spinner, and test at higher power levels. (Max current that the controller will deliver is 200 amps.)</p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/ExperimentalAviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ExperimentalAviation</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/Oshkosh" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Oshkosh</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>Installing the electric motor in the nose of the glider.</p><p>The motor is not large, but can deliver 23Kw max power briefly during takeoff and initial climb.</p><p>It is mounted to a bulkhead with viscoelastic pucks that help absorb some vibration.</p><p>The final photo shows the motor in place, but the propellor blades and spinner have not yet been installed. It also shows a cowl flap for motor cooling...which is an unusual feature on a glider.</p><p><a href="https://front-electric-sustainer.com/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">front-electric-sustainer.com/</span><span class="invisible"></span></a></p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/ExperimentalAviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ExperimentalAviation</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/Oshkosh" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Oshkosh</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p><span class="h-card" translate="no"><a href="https://hachyderm.io/@Aut" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>Aut</span></a></span> <span class="h-card" translate="no"><a href="https://hachyderm.io/@younata" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>younata</span></a></span></p><p>Did DBT Aero (double box tail design, used to be called Synergy Aircraft) have a tent/booth at Oshkosh? Did they show any hardware? Or did they just make their announcement for their 2-seat version?</p><p><a href="https://dbt.aero/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">dbt.aero/</span><span class="invisible"></span></a></p><p><a href="https://www.ainonline.com/aviation-news/general-aviation/2025-07-21/dbt-aero-introduces-two-seat-double-box-tail-airplane" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">ainonline.com/aviation-news/ge</span><span class="invisible">neral-aviation/2025-07-21/dbt-aero-introduces-two-seat-double-box-tail-airplane</span></a></p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/ExperimentalAviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ExperimentalAviation</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/Oshkosh" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Oshkosh</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a></p>
AlcorNews<p>Un avion 100 % électrique Pipistrel Velis Electro fait escale à Grenoble lors de l’Elektro Tour 2025 : vol silencieux, zéro CO₂.<br><a href="https://mesinfos.fr/38590-saint-etienne-de-saint-geoirs/l‑elektro‑tour‑2025‑fait‑voler‑un‑avion‑electrique‑a‑grenoble‑227232.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">mesinfos.fr/38590-saint-etienn</span><span class="invisible">e-de-saint-geoirs/l‑elektro‑tour‑2025‑fait‑voler‑un‑avion‑electrique‑a‑grenoble‑227232.html</span></a><br><a href="https://mastodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Space</span></a> <a href="https://mastodon.social/tags/Innovation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Innovation</span></a> <a href="https://mastodon.social/tags/AerospaceEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AerospaceEngineering</span></a> <a href="https://mastodon.social/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://mastodon.social/tags/ElektroTour2025" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElektroTour2025</span></a> <a href="https://mastodon.social/tags/GreenAviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GreenAviation</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>Installing electronics and batteries for the glider's front engine sustainer system.</p><p><a href="https://front-electric-sustainer.com/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">front-electric-sustainer.com/</span><span class="invisible"></span></a></p><p>First photo - the two connectors for sensing and control of the high-amperage motor controller. They are identical form factor. This means I can connect them to the wrong sockets if I'm inattentive.</p><p>Second photo - The motor controller's connectors. When I install this controller in the fuselage belly, I will have limited visibility on this face with its labels. Note that the labels for J1 and J2 are underneath the sockets...hidden from my view. I have painted Roman numerals I and II above the sockets. I can see those markings after installation.</p><p>Third photo - This is a high-current system. The fuse at the positive end of the battery pack is rated at 325 amps.</p><p>4th - wiring diagram. High-current cables marked with dots.</p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/ExperimentalAviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ExperimentalAviation</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/Amp" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Amp</span></a> <a href="https://universeodon.com/tags/Wire" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Wire</span></a> <a href="https://universeodon.com/tags/Connect" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Connect</span></a> <a href="https://universeodon.com/tags/Confusion" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Confusion</span></a> <a href="https://universeodon.com/tags/Error" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Error</span></a> <a href="https://universeodon.com/tags/Safety" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Safety</span></a> <a href="https://universeodon.com/tags/RomanNumeral" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RomanNumeral</span></a> <a href="https://universeodon.com/tags/Oshkosh" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Oshkosh</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>The glider cockpit now has fiber optics!</p><p>Why?</p><p>The FLARM collision warning system is an electronic box that sits behind the instrument panel, but on that box is a power/status light.</p><p>I wanted that status light 'transported' to the panel...so I get a length of fiber optic plastic (3mm diameter), put a blob of thickened epoxy around one end...sanded/polished it, and mounted that blob in front of the status light.</p><p>How often do folks use fiber optics in this manner in homebuilt aircraft?</p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/ExperimentalAviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ExperimentalAviation</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/FiberOptic" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FiberOptic</span></a> <a href="https://universeodon.com/tags/Optics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Optics</span></a> <a href="https://universeodon.com/tags/EAA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EAA</span></a> <a href="https://universeodon.com/tags/Oshkosh" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Oshkosh</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>A home-made spring clip for small parts in the glider cockpit.</p><p>This is just several plies of fiberglass wrapped around a piece of foam that was sanded to a taper and the desired dimensions. Fiberglass can serve as a spring, but I would not use it this way where cycling fatigue is possible.</p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/ExperimentalAviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ExperimentalAviation</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/Fiberglass" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Fiberglass</span></a> <a href="https://universeodon.com/tags/Epoxy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Epoxy</span></a> <a href="https://universeodon.com/tags/Composite" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Composite</span></a></p>
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️<p>Glider antennae for the FLARM collision alert system ... where to put them?</p><p>I have three antennae to worry about: GPS, ADS-B, and FLARM A. (FLARM B is an external antenna on the bottom of the fuselage.)</p><p>They can't be too close to each other. The blue strip of aluminum taped to the nose shows the notional canopy inner surface, so there is not much height available. Fortunately, the instrument bay top cover is fiberglass is radio transparent. If I have to drill a hole to set the tallest antenna a bit lower, that's not all that terrible.</p><p>Note, for proper antenna polarization the dipoles must be vertical.</p><p>Considering all the other antennae I have (transponder and its GPS, radio, infotainment system, SSMIS download and HAM relay), I'm starting to feel like this airplane:<br><a href="https://en.wikipedia.org/wiki/Boeing_RC-135" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">en.wikipedia.org/wiki/Boeing_R</span><span class="invisible">C-135</span></a></p><p>At least I don't need a long wire HF antenna. Or do I?</p><p><a href="https://universeodon.com/tags/AvGeek" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AvGeek</span></a> <a href="https://universeodon.com/tags/Aviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Aviation</span></a> <a href="https://universeodon.com/tags/ElectricAircraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricAircraft</span></a> <a href="https://universeodon.com/tags/ExperimentalAviation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ExperimentalAviation</span></a> <a href="https://universeodon.com/tags/Homebuilt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homebuilt</span></a> <a href="https://universeodon.com/tags/Glider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Glider</span></a> <a href="https://universeodon.com/tags/DIY" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIY</span></a> <a href="https://universeodon.com/tags/FLARM" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FLARM</span></a> <a href="https://universeodon.com/tags/Antenna" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Antenna</span></a> <a href="https://universeodon.com/tags/Radio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Radio</span></a> <a href="https://universeodon.com/tags/GPS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GPS</span></a> <a href="https://universeodon.com/tags/Electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Electronics</span></a> <a href="https://universeodon.com/tags/Avionics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Avionics</span></a></p>
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