turboplanner

...examiners.

OT faded like the horse you put your money on, and was quickly turfed out of the hospital bed, and lined up for his medical which was being conducted by the authorised doctor who was an ex SAS Colnonel in the medical corps. "Come her ya little rat" he said, and gave OT a kick in the shins, rabbit-killer in the neck and a punch in the gut.

"Stand to ATTENTION when I'm talking to you" he bellowed and OT wryly thought "CASA have found their man here", but not many people know that OT was a former member of Z Force, so skilled that we can't tell you, who did things we can't tell you to enemies around the world we can't tell you, and.........

1 hour ago, spenaroo said:

Sniff i miss the 1200cc two stroke jet ski's.

 

marine were running direct injection outboards for a while but that has ceased, everything is now 4 stroke with forced induction for performance.

 

That's a good point; they did that because they couldn't meet the ever tightening emission standards.

The wankel principle now has a much more stringent environmental performance to achieve than it did in its heyday.

20 minutes ago, RFguy said:

the torque etc question is what many  people who try electric power aircraft often dont do their sums- spec of 100HP at 8000 RPM etc , and of course at 2500 they'll be very disappointed... must use reduction gearbox for std prop. 

It looks very new right now. But some neat ideas.  ah yeah I see the seals on the casing.

 

I wonder what people are doing for innovation for engines  in marine service (high continuous loads). 
As a kid, my friends with Mazdas, we used to joke fill up with fuel, fill up with oil....

Marine has the advantage of a continuous suppy of cold water, so a slight advantage over auto radiator temp but fuel consumption these days is a key factor becaise of the cost of petrol.

1 hour ago, RFguy said:

This is a terrific video, worth watching if you have time. 

the LiquidPiston engine. includes visit to the plant.

May 2021. new.

 

essentially the rotor has a port internally. 3 bangs per rev.

 

 

 

 

I like it and the idea of 3 bangs

You can see it still has the two types of seal used by Wankel, the wiper seal around the two sides (front and rear here). Notice a little carbon build up out to the seal. The apex seals are reversed, mounted in the housing and scraping the apex.

The million dollar questions are:

1.  Will the three bangs allow a smaller fire, and therefore a cooler chamber, so lower temp to stop the seals burning away at full power?

2. What is the torque, rpm and power compared to a 4 hp 4 stroke. I think he gave us the hp, but with the rpm we can work back to torque and then perhaps see if it suits constant load applications such as aircraft.

9 minutes ago, RFguy said:

I'd be happy to swap some efficiency and lifespan for an engine that didnt have pistons trying to get out of the box....

Most don’t get out of the box

1 hour ago, RFguy said:

TURBS

so you are saying the seal problems have not gone away, same old problems , need substantially derated engines for high continous output ?

Yes, Facthunter’s post sums it up, a circle is easier to seal than something with corners plus a swept path combined with face seal.

There's a very extensive thread on Wankel somewhere. I would summ it up as not enough torque, but Torque x rpm - horsepower, but when you use the rpm that produces suitable horsepower, the fuel demand doesn't suit the expected hourly consumption for Recreational Aircraft, and as a secondary issue it works well in intermittant engine applications because it can cool down between power bursts and produce reasonable seal life, but in the constant power application of an aircraft the most rapid seal deterioration occurs.

13 minutes ago, IBob said:

You did well, Turbo. I had a Series C Comet, the unmodified unit was really a bit of a dog with a top speed somewhere in the mid 80s as I recall.
About what you'd expect, I guess, as it was essentially a Rapide or a Shadow without the rear cylinder.

I was living in London, and the clutch would progressively heat up in the stop/go traffic: the hotter it got the more it dragged and when it dragged you couldn't get it into neutral which caused it to heat and drag more, which eventually left just two options: stop and wait for quite some time, or ride down footpaths and median strips. I did a fair bit of the latter before graduating to a Goldie......

I can't remember which series mine was but I used it for travelling out in the country, so just about all at highway speed. Mine topped out at about 110 mph.

1 hour ago, IBob said:

That's going back some: didn't he and someone else circumnavigate the globe on an HRD.....HRD being what went before HRD-Vincent, then Vincent???

Yes, he wanted to go to England for something so he rode there via Canada (using ships for the water crossings). He got a job with HRD and he was the driving force with the Vincent dominance. I bought a Vincent 500cc Comet; 44 mph in first, 77 in second and put a gugeon into the bore at 173 km/hr. I used his principles for building race engines and you could pretty much do what he said, assemble the engine and sometimes double the power.

Jack Brabham wanted Repco to build a formula 1 engine based on an Oldsmobile V8 They hired Phil, and he and a Repco engoneer built it and won a World Championship season straight out of the box. I dopn't think anyone else has ever done that.

Bear in mind though that when we increase the power output through better breathing and timing for race engines we are not concerned about long life or failure of components in the medium the medium term, so an engine for NASCAR racing might put out 700 hp, one for Sprintcar Racing 1000 hp, and one for drag racing several thousand hp. All are designed to last until the flag drops, so the drag race engine life might be 15 minutes which could be a season.  For an aircraft we are proably looking for 1000 hours without any forced landings as a starting point so there are two considerations: Phil's and the aircraft engine life.

.....envelope, but Turbo didn't make it to Kilmore Gap. He would have had no0 trouble adapting to the conditions in the J170, which was flying like a bird, albeit at a very slow speed, but he became bored with the scenery and decided to make an Outlanding [raghead ref] . He landed beautifully on a farm paddock. As he expected , the wind was roaring so he tied it to a tray. While walking up to the farm house he had an accident, tripping and suffering a broken arm and head injuries, but as we know he is tough and after he had a cup of tea with the farmer who showed hinm dozens of rabbit jackets, he decided to fly on after all, but when he got back to the plane the wind had pulled its tail off, one of the mains was missing and something had broken both prop blades. He decided ................ 

.......and kill sharks too.

Turbo will report in on the storm later in the morning, but is planning to go up for a flight to see what damage has been done. Sure the Met report doesn't look good, but they are usually wrong, so you can't be put off by that. The Kilmore Gap looks a problem, but there should be some breaks in the cloud some time during the morning. Caclulated TAS is fifteen kts due to the strong winds, but the trip is only 100 Nm so there should be plenty of fuel left at the end, and there is always one of the Fire Strips he can use up in the mountains where ..............

....Turbine Rodents (Turkey) Inc.

Some NES readers might be alarmed at OT lapsing into rabbit talk.

In the East we all know that rabbits can't talk; we learn that at about the age of five, but, good readers, if you ever go over to WA you'll quickly get used to the bunnies talking to each other and ..............

48 minutes ago, Captain said:

CLARIFICATION NEEDED please Tubb before a detailed reply can be prepared - Are you referring to the WAPol Police "van", the Van aircraft (avref) "van" or the town of Van in eastern Turkey near Gaziantep Guim, where Cappy has his summer villa (with 2500 m sealed strip [orgasmicavref])? (And to which you are all (even jam-eater bull) invited once Covid buggers off).

It was Gaziantep Guim Cappy.

.....but Cappy's hope was in van. Turbo mis-heard CT, thought he was asking for a Biblical flood, and sent one down on DG. The flood level reached 1220  feet and wiped out twelve hangars filled with things like the left wheel of a DC3, aasortred projects where people had spent 47 hours on building their kitfox, Thruster of Jabiru LSA550 and couldn't bring themselves to admit they couldn't build a mail box.

Locals, after swimmingh 800 feet up from the town stood on a nearby knolol looking down on the devastation. "Probably a good thing" said ...........

As we all know, the Pitts is not really an aircraft, just a powerful engines with some bits and pieces and a seat tacked on, and as he pointed it at the sky, the engine...........

[Turbo realises CT slipped one in there, but he did say it was an aisde to se can technically ignore it.]

.....patched Wreckfly sergeant5 at arms Een "Sleepy"  De Havialland [avref] arrested in possession of 18 buckets of milk.

"We noticed he was taking a long time to milk a Jersey cow" said Sergeant Wayan Putu from Perth, so we  un-encrypyed Geekref] his laptop which then led us to lookthrough his sheds and we found these buckets of milk hidden in a hay shed. We've charged him with milking a cow, which a serious offence in WA We3 also discovered six Morris choke cables and ......................

.......used to power cream separators in the Western District dairy farms. They have exactly the right amount of revs and power to separate all the cream off in a sweet consistency that gives us an extra two days "Use By" margin. We know they won't last as long as the Briggs & Strattons we've been using, and we had a laugh when we found that WAPol were still using them in pursut vehicles" saif farm John Poll.   "Not only that" said Will Hereford "but this; they will also double to pump the liquid manure down to the river, and .............."

When nothing happens nothing happens, but when the accident happens the problems start with insurance cover and go downhill from there.

4 minutes ago, onetrack said:

...delivgered to the Government House lawn where, try as she would, she could not get the Fiesta to take off, and it slid into the Governor's duck pond. on the other hand the Pitts took off like a bird, and she completed a couple of laps of the garden, landing smoothly on the back lawn, to .............

[Strange people those early pilots; when you realise they didn't "elevate" or 'go up" or even "sky", but took orff" which  makes you wondwer what they took off. Did they reach a certain speed, then whip off a shioe? At t60 knots did they tak off their jumper? or did they simply take off their Biggles badge?]

4 minutes ago, onetrack said:

 

......Mavis had no class at all. "I like rump steak", she said, but the donkey was dragged away and stuffed.

It was decided that such a magnificent animal should not be lost to the people of Victoria, and Darraweit was taken to the Melbourne Museum itself, given a different name of course, and described as a race horse so there were no awkward questions, and has been a popular tourist icon for generations of people.

However, ........

......raised his weapon.

The donkey ...............

......the thread drift.

"What are you DOING!" said the Governor in a rhetorical question (which means he knew the answer).

"I was looking at the dahlias...." she started to say, but  he weeled her around and .........

[Information to NES readers for clarity:

The Darraweit Guim story came out at every Governor's Garden Party inh the late 19th century, and caused such embarrassment that Premier William Shiels  had Place Names Victoria put the name on the Register and offered free land for a pub, bakery and store, so  when wives arrived home and asked what the big joke was, the men could refer to something oulandish in the town, and it remains that way today asa we saw from CT's post]

........Turbo explained, and for that matter explains to all NES readers, and all Australians, and first Australians (respects to elders etc), and the Negrito Australians who colonised Australia before the first Australians, and the two skulls who colonised Australia before the Negritos, NEVER to mention Darraweit Guim. 

Darraweit was a donkey, and alleged to be trained, but in 1967. at the Governor's Garden Party at Werribee Mansion Darraweit .............

One thing's for sure; the frame might not have a registration number on it, but the pilot has drawn National attention to himself.