Wing42's Boeing 247D released

Started out the day trying to do my first full fuel load endurance flight to see how long she could stay up. Didn't quite work that way.

Departing Buenos Aires, heading up the coast. Cruise altitude 8K, 27" & 2200rpm.


Approximately 2:25 into the flight the right engine died. Feathered that one and looked for nearest airport. She easily stayed flying on one engine, even though the flight started out at MTOW.


A few minutes north was Chuy Airport (SUCH). Small grass strip located right at the peek of the left engine cowling.


Just as I turned on final, the left engine died also, so it was a dead stick and coast to a stop landing. After looking at the engines the locals think they can have her back up and running for a flight out in the AM. :)


The issue turned out that there was pretty much no oil left in either engine. So it seems she runs out of oil, long before the fuel is gone.



Forest
 
Oh my, tried to pursuade it to start for a quick flight last night. Managed to get the right engine running pretty much straightforward, than struggled with the left one. At some point I noticed the right engine fouling up, so I increased rpms to over 1000. Well, right engine ran hot and I had to shut it down again by pulling the mixture. That's when I noticed I never moved it away from ICO for the left engine. Feeling pretty dumb, I primed the left engine and it immediately started. Than the problems reversed and I think I overprimed the right engine producing a friction lock and destroying it (the clipboard told me it was gone for good). By that time it was 3 AM and I decided to head to bed.

Some would be frustrated and angry at that thing, but I immediately started loving it due to the fact that it did beat me. ;) Will try again tonight.
 
Hmm, not sure about how to operate the engines in the air. Engine were running very cold with outside temperatures in the very normal range (50F / 10°C at 6-7000ft). CHT below 200F, oil below 100F even with the shutters fully closed. Tried increasing throttle and RPMs to gain some heat. At some point the engines gave up, one first, than the other soon after. Probably due to high oil viscosity and maybe even friction lock in the cylinders. Luckily I was just taking a tour around Cape Caneveral, so I had very very big runway right up for grabs. Oil was SAE30 which is supposed to be fine for those temperatures. Maybe I'll try an oil change and make sure it's actually this oil. With a couple of switches I had the feeling that the state saving is not 100% yet. For example when reloading the aircraft I had no luck firing the engines before cycling the magneto switches once.

I guess I'll try again today but currently I can't see how to keep the engines alive at higher altitudes or cold weather.

While I generally like the state saving a lot, for some purposed a reset / cold and dark button would be handy.
 
Thank you for all the lovely repaints.

Any chance you might have this one in the pipeline?

Screenshot%20-%204_11_2022%20%2C%2011_44_16%20AM.png



KevinB
 
I believe it worth mentioning that the temperature gauges, both CHT and Oil, appear to be grossly wrong to the point of being useless at this time. Just concentrate on the oil pressure. If you have the correct oil type then if you are within oil pressure limits then you should be ok.

Also If you have an engine failure or crash, you may want to cycle your various fuel controls including mixture when you start a new flight. Personally I have found that if there is a problem with things being out of sync I tend to be unable to get fuel pressure until I cycle the fuel selector. If I do that and concentrate on not missing a step in the start procedure then I have no problem starting it.

I think in an effort to defend the product there is a lot of conjecture attempting to rationalize the temperature behavior and it is fun to try and figure things out, but eventually it is going to get old.

I say all this not to disparage the add on but to help with the frustration that some may find. This is a great add on worth every penny as is and hopefully will only get better.
 
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