The lure of the Pitts Special

I’ve been back in the air in an aerobatic aircraft. I managed to persuade a fellow glider pilot and tug pilot Fred Best, to take me for a ride in a Pitts S2c.

Upside down in the front seat of the Pitts.

Upside down in the front seat of the Pitts.

This is  a bigger two-seat version of the aerobatic biplane that I owned for many years. The S2C has redesigned wings, a bigger engine and performs much better than my little old plane. But it still has a steel tube fuselage and wooden wings, all covered in fabric, a little old-fashioned these days. This was a nostalgic day for me – the plane was in the same hangar that my Pitts occupied for years, the AOPA hangar at Bankstown. It all seemed quite familiar.

The Pitts belongs to Peter Townsend of the Australian Aerobatic Academy. I knew Peter from when we used to fly in aerobatic competitions many years ago. He’s still competing. Fred flies this Pitts regularly.

Fred took me for a trip out towards the Blue Mountains for some “gentleman’s aerobatics” – that is, not too many Gs and nothing too violent! That suited me well as I haven’t done any serious aerobatics for many years now. The acceleration on takeoff is truly impressive and the climb rate amazing.

We did some loops, rolls, spins, stall turns and a flick roll. I handled the controls for a while and found it a fine aircraft. Excellent fun. I made a short video with my GoPro. I couldn’t do too much filming during the aerobatics as I had to hold on tight to the camera!

It was good to get back into the air in a powerful aerobatic machine.

 

 

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Digging for victory

We survived the great Sydney storms caused by the infamous East Coast Low at the weekend with only a little problem.

We had 118mm (4 1/2 inches) of rain on Sunday the 5th. The house stayed dry but some water got into the garage, which is a couple of steps below the house floor level. The water got in because the stormwater drain was blocked and the runoff from the garden and courtyards went down the path at the side of the house which runs by the garage.

Getting to the root of the problem.

Getting to the root of the problem.

I tried removing the blockage from the street end with a flexible rod, but this just hit a solid mass and couldn’t budge it. Of course I got soaked through doing this during the rain!

Yesterday was nice and dry so I tackled the problem in plumber mode. My probing had indicated the blockage was located somewhere between our front garden and the pavement so I dug a big hole there and uncovered the water pipe. The plastic pipe had been repaired a few years ago by a proper plumber who inserted a section of new pipe with rubber joiners at each end fixed by Jubilee clips.

As I eased off the first rubber joiner the dammed-up water came out and flooded the hole, so I had to wait a while for it to soak away. I managed to slide the joiners away from the inserted section and remove it. I found it completely blocked by a big sausage of matted grass roots that had worked their way in through a tiny gap between the rubber joiner and the pipe and had grown to monstrous size. The sausage came free with a bit of effort leaving a clean pipe. I made Jan take a photo of me at the height of my plumbing triumph.

I reinstalled the pipe and made sure the joiners were tight, then filled the hole again. I checked the flow by putting a hose down the drain in the courtyard and observing it gushing into the street. Success! I had saved us from the frightening charges of a real plumber. On the downside I had to throw away my trakky-daks. They were my third-best pair and had a couple of holes already, so I didn’t mourn their passing too much.

We were lucky in the storm – lots of areas were flooded and some houses in coastal suburbs were left teetering on the edge of the water as huge seas pounded the beaches.

 

 

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Light fantastic

The Vivid light show is on again in Sydney. This year it has spread out from the centre of Sydney to some of the suburbs. We + Viv and Chris decided to have a look at the installations in Chatswood. I headed out by train, met up with Jan (who had been working) at Town Hall station, then on to Chatswood to meet V+C.

I think it was my first time across the Harbour Bridge by train – at least the first I can remember (but my memory isn’t great).

At Chatswood we saw the first of the installations as we came out of the station. A couple of big pterodactyls were hanging from the roof of the shopping arcade. These were not your average run-of-the-mill pterodactyls, they were fully blinged up with lots of coloured lights. A couple of exercise machines on the ground floor appeared to be animating them, making them climb and dive and sort of flap their wings.

Chris took a bit of video.

We walked across a bridge which had a rope and wood plank bridge projected on it. This was good when the wooden planks broke and threatened to tip you into the abyss below! Jan had fun with it, and the many little kids thought it was brilliant.IMG_1514

Outside there were more projections in the pedestrian precinct. One was a jungle complete with flowing river, fish, lizards and dinosaurs. There were also, to Viv’s dismay, some very realistic-looking snakes slithering among the trees. Again, lots of little kids were having a terrific time stamping on all the creatures underfoot.

More dinosaur type projections lit up the sides of buildings and there were some impressive dinosaur eggs hatching out. There were rain showers coming through, but we managed to dodge the worst of them. We had a splendid meal at a Shanghainese restaurant, another little wander, then headed home on the train, tired but happy.

We’ll have a look at Vivid in the city later.

 

 

 

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My home-made radar project

I’ve made a gadget that can track our gliders at my gliding club. It’s still in test mode – I need to install it with a good antenna at the clubhouse in Camden Airport.

It tracks the gliders by listening to their FLARM signals. Flarm – flight alarm –  is fitted to all our gliders and tow planes. It consists of a low-power transmitter and receiver and a GPS that sends position, speed and track to other Flarm units. There’s a small display in the glider that shows the direction of any conflicting traffic and its heightflarm relative to you. It’s very useful – bumping into another glider could ruin your day.

So if you can receive and decode those Flarm signals on the ground, you can show them on a map display and keep an eye on your gliders. You can also capture times of takeoff and landing automatically, instead of having to have someone write them down on a paper logbook.

Luckily, some clever people have written software for such a thing. So I have built a unit consisting of a cheap ($15) dongle originally designed to send TV signals into a laptop plus a Raspberry Pi mini-computer. I also built a coaxial collinear antenna and a power-over-ethernet setup – this is so the receiver can be kept close to the antenna and limit losses in the antenna cable. OGNbox

I’ve put it in a neat box with a clear lid so I can see the lights flashing that show it’s all working.

It took a while to set up as the software is based on the European Flarm frequency of 868MHz but Australian Flarms use 921 MHz. Luckily, the guy who wrote the software came to my aid via email – he’s Pawel Jalocha, a Postdoctoral Research Assistant at Oxford University. He’s done lots of work on transmitting radio data in packets and decoding weak signals.

So the project needed my skills at planning (moderate) soldering (excellent), drilling, gluing (good) crimping connectors (good) and software code writing (execrable). But I’ve learned a fair bit of command-line Linux to help me through it all. I log into the Raspberry Pi using ssh on my Mac and issue commands such as sudo service rtlsdr-ogn status or telnet localhost 50000 or sudo nano rtlsdr-ogn.conf. Fun eh?

The project is called the Open Glider Network and the software is open source. There are lots of receivers in Europe and you can see live glider movements there during the European daytime on their webpage.

The next step is to install the antenna and receiver at the gliding clubhouse. I need someone to go up a ladder to do that.

In the meantime, I’m testing at home and you can see my receiver  when it is switched on. The co-ordinates are for Camden so it shows the receiver at Camden even when it is a at home (confusing eh!).

A work in progress – fingers crossed that it does the job at Camden.

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It’s all there in black and white

We had a couple of interesting events listening to authors appearing at the Sydney Writers’ Festival.

Our first gig was an evening talk by Hanya Yanagihara, author of A Little Life  which was shortlisted for the Man Booker Prize.  The book, about four classmates from a small US college, was pretty harrowing. One of the characters has a terrible time as a child and has lots of painful problems as an adult. Nevertheless, a very good (but very long) read in my opinion.hanya

It was fascinating to hear how a middle-aged Hawaiian American woman could write so well about the emotional lives of men – and gay men. This was my first experience of a literary affair and it wasn’t bad at all.

The following Saturday we went to a couple of Festival events down near the Wharf Theatre close to Sydney’s Harbour Bridge. First we heard Marlon James being interviewed about his book A Brief History of Seven Killings which won the 2015 Man Booker Prize. Jan and I liked the book a lot, but lots of our friends hated it! The Wiki says: “The novel spans several decades and explores the attempted assassination of Bob Marley in Jamaica in 1976 and its aftermath through the crack wars in New York City in the 1980s and a changed Jamaica in the 1990s.

It’s a difficult read, not the least because some of the characters think and speak in a heavy Jamaican patois. Since Jan and I are keen Bob Marley fans, we quite liked the patois!

Marlon has a wonderful deep voice with a Jamaican twang. He told us he could speak in patois but we wouldn’t understand a word! Again, interesting insights into the craft of the writer. The talk was being  recorded for Radio National so they also played bits of Bob Marley song to set the mood. Great! I waved hello to my former colleague, David Marr, who was also in the audience. It was a packed house in a big theatre.killings,_Cover

The area round the wharves was also packed with people going to the many Festival events. It was quite a buzzy atmosphere, like a sort of rock festival for old people! We had a snack lunch overlooking the water –  and met, by chance, our neighbours Dean and Paula. Small city.

In the early evening, we went up into the loft of one of the old wooden wharves on the harbour for a group book reading. The authors were Carmen Aguirre, a Vancouver-based, theatre artist and author, Paul Murray, author of An Evening of Long Goodbyes and Skippy Dies, Petina Gappah a Zimbabwean writer with multiple law degrees, Marlon James,  and William Boyd, author of 14 novels including Any Human Heart and Restless.

The readings were terrific. There was, as you might imagine, a great contrast in the books and the reading of them. I really enjoyed the session. We vowed to get some of the books.

I also bumped into another former Herald colleague – reporter Debra Jopson. She’s now written a novel so I had to buy a copy of that. It’s titled Oliver of the Levant and concerns a kid from Bondi who’s father takes him to live in Beirut. So far so good.

All that creative writing makes me feel guilty about my blog. I owe my readers more than this quotidian greyness. I vow to use more adjectives. More really really good expressive adjectives.

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