Pic of the Day

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Renegadenemo
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Re: Pic of the Day

Post by Renegadenemo »

Seriously - every instrument and, in fact, every everything involves many months of investigation and learning before we can declare it good to go, safe and reliable so Ted can look out of the window and guess - his trousers will tell him all he needs to know. We'll work out the ASI retrospectively.

This week's great challenge has come from learning that the igniter coils from K7's old HT system aren't compatible with the later igniter plugs fitted to the Orph' 101 because those are designed for use with the high-intensity discharge 'cracker boxes' with a semiconductor coated ceramic to allow some draw across the electrodes to reduce radio interference. Plug one onto the HT igniter and you get nothing. Clever Barry and Checkie are on that one.

The other great challenge is trying to buy a drum of Jet A-1 and you'd not believe how impossible that is! I've acquired two unicorns and a virgin from Newcastle to trade for our jetfuel but no takers as yet.
I'm only a plumber from Cannock...

"As to reward, my profession is its own reward;" Sherlock Holmes.

'Sometimes you gotta be an S.O.B if you wanna make a dream reality' Mark Knopfler

Dangermouse
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Re: Pic of the Day

Post by Dangermouse »

With regard to that gorgeous Longines stopwatch, I wonder if it was used to measure engine hours?

As you say, it'd be almost impossible to do anything useful with it at speed on water, but starting the watch just before prodding the engine start button would probably be feasible.

There's also the possibility that DC would have started it then, left it running, and just kept an eye on it for an indication of his times thereafter. He'd have been able to see where the needle was pointing before and after a run, even without starting and stopping.
Matt in Mid Wales

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Richie
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Re: Pic of the Day

Post by Richie »

That was my thought.... Sponsorship gig, has to be seen with the merchandise
"You can screw a man down until he takes to drinking......take me to the fantastic place..."

quicksilver-wsr
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Re: Pic of the Day

Post by quicksilver-wsr »

I don't know what Donald used it for, if he used it at all, but having an event-timer in a cockpit isn't unheard of. They can be useful things to have easily in reach on the dashpanel.

N.

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Renegadenemo
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Re: Pic of the Day

Post by Renegadenemo »

I think he just liked gadgets. Gina once told me he had a thing for pens, watches and cameras so my guess is he just liked it for its own sake and it was in the cockpit for the same reason as the g-meter. No practical use, but it looked cool.
I'm only a plumber from Cannock...

"As to reward, my profession is its own reward;" Sherlock Holmes.

'Sometimes you gotta be an S.O.B if you wanna make a dream reality' Mark Knopfler

Techteam
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Re: Pic of the Day

Post by Techteam »

Timing Turnaround ?? Start the watch on ending first run 1 hr Turnaround. I know he had radio but if that failed they have to know how long is left.

polo
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Re: Pic of the Day

Post by polo »

Bill,
2 Unicorns - believable
virgin from Newcastle no chance
Try

Booker Aviation
Wycombe Air Park,
Booker, Marlow
Bucks, SL7 3DP
info@bookeraviation.aero
Tel: 01494 443 737

They sell A1 [or used to and they still say they do on their website]

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mtskull
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Re: Pic of the Day

Post by mtskull »

Is it my imagination, or is the Orpheus jetpipe suffering from a slight droop? (Cue a host of Viagra jokes....)
Seriously, it looks like a rather lengthy component to be left unsupported and there appears to be a stress ridge forming in the first section of the jet pipe immediately behind the turbine housing.
Obstacles are those frightful things you see when you take your eyes off your goals.

pmc
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Re: Pic of the Day

Post by pmc »

mtskull wrote:Is it my imagination, or is the Orpheus jetpipe suffering from a slight droop? (Cue a host of Viagra jokes....)
Seriously, it looks like a rather lengthy component to be left unsupported and there appears to be a stress ridge forming in the first section of the jet pipe immediately behind the turbine housing.
From the peanut gallery:

I was just looking at that -- and had attributed the apparent droop to a wide lens.

Your comment prompted me to look again before moving on...

The part with the shadow of a ridge looks like a complex shape in thin material around an awkward interface with the adjacent inlet duct -- and looks like it's expected to provide a cooling air containment surface rather than dimensional constraint. So, little surprise & no harm? From the story so far, it sounds like people who should know have seen it and not thrown a flag.

I think a working installation leaves the jet pipe with the same lack of support apart from attachment to the back of the compressor -- with the expectation that it will have enough stiffness to keep concentric with the space allowed for it.

Maybe.

Stepping aside for anyone with actual information...

pmc

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Renegadenemo
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Re: Pic of the Day

Post by Renegadenemo »

It's just the pic'. And what you are seeing there is not actually the jetpipe. It's the outer shroud used for cooling. The actual jetpipe is a sturdy, Nimonic stainless affair. What you see on the outside is a very lightly-built outer shroud and air passes between the two to cool the inner one.
I'm only a plumber from Cannock...

"As to reward, my profession is its own reward;" Sherlock Holmes.

'Sometimes you gotta be an S.O.B if you wanna make a dream reality' Mark Knopfler

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