Prospective operators may prefer optional means of protection for the propellers and the issue is addressed here with rails attaching span-wise...
Commenting on his purchase of an all-surface vehicle in time for next December's deliveries, Santa Claus says "With ongoing electrification of...
A working outline that can (a) be built with DIY materials but (b) readily doubled in scale. By way of a rider, note this prototype is...
The patent drawing was filed in 2011, though my advice to a younger self would be do something useful with life instead. With the appearance of...
Prior setting up for testing, a duplicate of the 6' cat featured here with the buoyant side-panels omitted. Though it only reduces the weight of...
The outlines filed 17th and 18th July of 2024 show configurations featuring vectoring and fixed means of power that reflect wider developments in...
The original 8' build differs from the 6' only in having a 2' extension to the upper and lower spars beside hydroski, (weighing 16lb motored as...
Problem being diagnosed as surplus buoyancy from rearward extension of the hydroskis, removal appears to have corrected the resting trim. With the...
A separate build intended to assess the practicality of a multi-hulled airboat sufficiently light to be adapted to hovering flight, so as to...
The original mock-up having been spliced repeatedly, I elected for a rebuild and took the opportunity to adjust the measures so that the upper...
A draft guide to the use of stock material for construction of an 8' catamaran for test purposes. Sheet and timber DIY material tends to retail...
Following a static buoyancy test the upper spars have been extended to 7' in length and remaining parts of the frame adapted to imperial measures....
Expectations confirmed in so far as the forward end of the flotation panels sit around three inches lower than the rear, while the C of G is...
A mock-up of the layout for flight-testing in hover and ground-effect transition to water. The initial format would be likely to feature fixed...
Broad outline of the prototype in progress: hydroskis 2500mm, upper longeron 2000mm, lower longeron 1500mm, beam 1200mm to outboard of...