Archives de l’auteur : laurentfabre

Proposal for a small two-seater tandem ultralight aircraft, with thermal or electric engine, with folding wings* and towable without a trailer.Features:Wingspan: 9mLength: 5.80mWing area: 10.80m2Expected weight:In thermal version, with a 25 to 30k* engine, 20 liters of petrol and 160k of crew: 330 k. That is a wing loading of 30.5 k/m2In electric version, withLire la suite « Fabre Tandem »

In the previous article we saw that small 6mm rod ends were enough to hold the wings of a 30k model loaded at 7.5G. What sizes will be needed for heavier planes?The 6mm size support a load of 6000N. Unless I am mistaken, for a 240kg single-seat aircraft, you will therefore need rod ends supportingLire la suite « Limit of use of rod ends for folding wings »

Rough 1/2 scale model of my Part 103 folding wing airplane project to check the operation of the system and test its solidity. I first check that the folded wing passes well above the tail. We see that it passes widely, thanks to the inclination of the axis of the rotation pivot (see previous articles),Lire la suite « 1/2 scale Part 103 aircraft »

…with 5mm et 6mm rod ends. Load equal 7,5g

Since some doubt the strength of the rod ends why not test them on a drone? A 1/2 rc model of the Part 103 (4.50 wingspan, 2.75 long, 30kg weight) would allow to see if the system is solid. Or build a real-size unmanned aircraft, that could perhaps be of interest to the military?

Wingspan: 9,50m – Length: 5,85m – Wing chord: 1,30m – Wing area: 12,40m2 – Maxi Weight: 430kg

Wingspan: 9m – Length: 5,45m – Wing chord: 1,20m – Wing area: 10,80m – Weight: 115kg with 30kg batteries.

Specifications:Wingspan: 9.50mLength: 5.85mWing area: 12.40m2 . Wing loading at 430kg (with 160kg crew): 35kg/m2 Petrol version: 70kg VW 65HP engine + 30kg petrol Electric version: 12kg 50KW electric motor + 90kg batteries

ROD ENDS… Some people think a rod end can’t hold the wing of an aircraft ??