Re: Boot

If you're German, you'd get that (Ed. 'boot' is German for 'boat').

Did though mock up something like this but stabilised by outriggers, but it was to use a technical term: shite. I thus figured it was not necessary and that the mono could be adapted to suit.

And what appeals about it over the cat is the fact it needs only one motor and given my experience with T-motor's great-kit-no-backup business model, anything that reduces my reliance on electronic speed controllers is good in my book.

(It will though need a rudder, but servos are old hat and I've used them in the past.)

The previous mono having been broken up for parts, this I knocked up in a half-day using leftovers from around the workshop. It's six feet long, two wide and one deep.

As it's half boat and half plane, however, I'm having to design for both contingencies and as you will know, most aircraft have motors (and the C of G) pitched forward for stability. Thus the motor will appear as previously advertised: out front of the deck.

As it stands, the C of G sits around a foot to the rear of the centre-post, where you can see I've balanced the craft on a length of dowel. After fitment of the motor that is likely to be around six inches aft of that leading edge, which is ideal for those times when it breaches the surface like a wooden whale.

We have seen from previous flotation tests that these things sit nose heavy at rest in the water, though I think I've a solution for that which we shall investigate sooner in place of later ~ in fact I've not let the water out of the bath so as to test the notion.

The battery meanwhile represents useable ballast that can be located to adjust the C of G to best suit operation at rest and on the plane, with the benefit that unlike fuel tanks their weight and centre of mass do not alter as energy is expended.

As seen here it weighs 2.90 kilos or 6.40 pounds... one pound for each foot of length, which is not bad comparing to other monohull watercraft.

Try Maran?

Renowned for building luxury yachts, the UK's manufacturers are still ploughing a furrow with monohulls whose outline has not changed in the course of a century: like oligarchs' palaces, but rounded off.

This one though is an all-European affair and collaboration between a French designer ~ who says conventional boats need to 'grow a pair' that we hope refers to pontoons (ed. no we don't) ~ Latvian builders, and a company run by a German with a woodwork background and a Dutch with an engineering.

Its designer claims the 180-foot yacht is between 40% and 50% more efficient than a monohull at speeds up to 28 knots. I have to ask myself why, as indeed you do.

I think it is down to that slender hull, which absent the outriggers would likely topple over given a broadside (of which I'm told there are many at sea).

Famous for maritime navigation long before Europeans, the peoples of the Pacific are renowned for outrigged canoes that suit the available materials and the calmer seas.

Such people arrived among islands of the Indian and Pacific oceans over five thousand years ago as often as not in rudimentary trimarans... so we may be coming full circle.

Dead Cat Bounced

Some years ago this project attracted inordinate interest in the UK, where the carbon-fibre wonder was constructed to power Pete Goss on a round-the-world race. It broke in what was described as a 'freak' Atlantic storm, freak being used to describe nature when it's not being fair: as in freak snow, freak leaves, freak flood, freak iceberg or the freak Moon you just missed.

It was abandoned when cracks started to form in the cabin that were eventually put down to computer programming errors in the design of the craft. Which goes to show that neither CAD/CAM nor carbon-fibre guarantee success either on water or in air.

Using wood along with expanded sheets or extruded sections of foam in a garage does show you ~ as it has me ~ where the principal stresses lie however. Waves being the freaks that they are, operate independently on either pontoon and especially so here where the length, width and height of the craft exceeded conventional limitations.

As you can imagine therefore, pushing the prow of one pontoon up and another down is likely to twist the centre-section... that in fact to which the cabin is attached, even prior to the eventual separation of one of those prows.

Beside BT, who have always had more money than sense, Philips also sponsored the build and what I found more interesting was the fact that the latter started out with the sals of light bulbs during the nineteenth century.

What I hadn't known was that since then, competition in the electronic consumables market from the Far East has seen them pivot into healthcare and not least electric toothbrushes.

A fate that may yet do the same to European auto-makers: 'Sheer Brushing Pleasure', as BMW might put it.

Can we consider alternative builds to the catamaran? Yes Bob, we can.

New RC Model Army

My attention was drawn yesterday to a newspaper article on how the UK is gearing up its inventory of drones in the face of multiple global threats, although that featured is in fact an uncrewed helicopter developed by Leonardo. For those wondering who they are, they represent the rump of the British helicopter industry long since flogged off along with the rest of the family silver... in this case to Agusta in Italy, where much of the £60 million provided by you and I will come to rest.

Looking at their website it appears they also offer an uncrewed surface vessel, though a badged product from an outfit in Cyprus which includes a single-page (free) website and a PO box. Cyprus is famous for its gambling, oligarchs and corporate addresses to include only a random postal address amongst its side-streets. I know, for I've worked for airlines whose head office comprised a letter-box that we gave up looking for, choosing instead lunch in a Lebanese restaurant.

As a part of Sir Keir's ongoing pursuit of value for money, I've asked how much one costs; as again you and I are likely to foot the bill. I suggested the machine-gun option was not required, although it could make for hours of fun on Norfolk's Broads.

p.s. my details are redacted in order that weirdos like you don't try to get in touch

p.p.s. Cromwell's New Model Army was formed during the English Civil War. Hilarious.

Bermuda Short

Many people ask me what applications I can envisage for the remotely-driven maritime patrol drones featured amongst these posts (Ed. They don't).

Tuning in momentarily to daytime TV however, as one can be forgiven for doing over a corned beef sandwich, I discover how both the coastguards and police force in Bermuda use expensive and environmentally damaging jet-skis to patrol their shores?

In a world where I have to drive semi-trailers around Liverpool docks it seems unfair that others get to spend time being paid for cruising tropical islands checking fishing permits are in order.

I say to them: "Get off your jet-skis and onto a monitor in a windowless room like the rest of us!".

What Bermuda's public services clearly need is Elon wielding his chain-saw.

Regular 'Ground-Up'

I belatedly renew my membership of the Vertical Flight Society, so as to keep my iron in the vertical flyer, and shall produce here a potted round-up of their own. Of most significance, the sale of Volocopter to China. Along with the financial travails of both Vertical and Lilium, the takeaway is that you won't get backing to get anything off the ground in Europe unless it's an Airbus.

Here though are two that I'd like to see literally and figuratively take off, one as yet only a CGI render from Bristol in the UK and another a WIGE on the water in the US.

There was I seem to recall an earlier attempt elsewhere in the UK to interest people in an electrical 'flying bus' but it appears to have followed the well-worn eVTOL path:

    (a)    Produce a glossy website

    (b)    Assemble glossy CVs on the promise of at least a month's salary

    (c)    Convince those most gullible in the City of London (take your pick)

    (d)    Spend a good deal of the revenue on buffets and life-like renders

    (e)    Go back to the day job.

Nonetheless I view flying buses of this kind as the natural heir to the Fairey Gyrodyne, and if asked the difference between aviation in the UK in the 1960s as against now, in the former it involved government and national airlines before buying American, while now we go direct to American without passing 'Go'.

Talking of which, I've long been a fan of wing-in-ground-effect and as with hydrofoils the problem was always how to regulate height. Processors have since (a) automated such control challenges whilst (b) providing ample electrical power. The result is a literal resurgence of such craft, of which Regent have attracted most investment and pre-orders.

I'd love one day to sit as a passenger in each.

    Top:         Regent

    Bottom:   Sora (geddit?)

Hat, Throw, Ring?

GoAero is the challenge that succeeds GoFly, to which we pitched up in California in 2020 BC (Before Covid), and the organisers have clearly learned a lot from the prior.

Its eleven Stage One winners have all recently rendered somewhat derivative craft in pictorial form and yet shared $100,000 between them. Though I'm not bitter (Ed. He is), I do consider it may be worth throwing my hat into the Second Stage ring.

For the current focus is on rescue, for which elements the above is ideally suited:

    (a)    Retrieve a drowning victim at the beach.

    (b)    Evacuate flood victims.

    (c)    Rescue someone who has fallen through the ice on a frozen lake.

The takeaway from all of the half-dozen giant drones that I produced (along with good colleagues) before, during and after the competition is that eVTOLs are a royal pain in the ass. Beside that however the principal finding is that, absent the person on board and things are altogether cheaper, easier and safer.

Which brings you back to the Industrial Revolution and the canals and railways here in Lancashire that made it all possible. For an early finding was a horse could pull a ton on land, but two on rail and no less than forty on water.

Once you're moving fast enough however, progress in the air is wholly more effective than on water, with one proviso: it takes a good deal of energy to get airborne in the first place.

Many years ago I gave up a spin in a Whirlwind helicopter for a flying lesson that did not eventuate... story of my life. It was dedicated to SAR, or Search and Rescue, and this is something the UK can no longer really afford, along with all else. The turbine engines such aircraft use have to be exercised regularly even if there is no rescuing to be done.

The modus operandi of the sketch ~ penned as ever around 04:00 a.m. ~ is to fly to a rescue by air (where else?) and to recover by water. In this way you are reducing the cost of getting the thing up there to travel to the rescue site soonest and to conduct the search. And afterward to return with the casualty by sea, which ideally they'd now be out of.

Then it's travelling light on outbound (ideal in air) and heavy inbound (ideal on water): all of which means you can deploy several hundred for the cost of a single helicopter.

Imprinted on my memory from childhood is the lion surmounted by a swarm of bees on the tins of golden syrup I'd use to sweeten my porridge. It's been removed, as you can imagine, for fear of it unsettling the snowflake generation at breakfast.

But there's a moral to the tale: paper covers rock, bees sting lion*.

* Yes, I know it was supposed to be dead already... get a life.