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Re-starting the RTW Tour :

After issues and repairs to PC’s etc,  I’m taking some time out to enjoy my self with the CIX VFR Club by flying their Christmas Caper around The Bahamas.

It’s really enjoyable.  The scenery from flightsim.com titled Caribbean Seaplane Tours is really top notch.

I seem to be getting crosswinds from 040 – 060 @ 16-20 kts,  and as many runway’s are east/west it makes for some interesting flying, but that’s half the fun..     I’m trying not to be the last to to finish,  but some people are on the way back to the US mainland while I’m only about 1/4 of the way around.

No matter though, I’m doing it for the fun.

 

Anyway, onto the reason for the post.

Christmas is coming, the goose is getting fat yada yada, you know the drill.   What with Christmas commitments I’m probabally not gonna start flying the RTW trip until the new year.  That way I can enjoy what I’m doing now with out rushing around the place.

Watch this space.

 

CIX VFR Club’s Christmas Caper 2011

Well,   it’s in full swing.  We’re having a tour around the Bahamas for our christmas jaunt.    And really enjoyable it is as well.   Apart from the corsswinds I’m getting all the time, but they can be fun.

Here’s a link to the event :

And a few pictures that I’ve taken.  Ohh,  I ended up renting a Caravan (executive fittout) C6-SBI.  Watch for me on Vatsim.  If I’m flying,  keep away 🙂

Burning Fuel = forward motion

Go and search the interwaits for “How much fuel can a DC-3 carry”  or a similar search and you’ll get as many answers as you can be bothered to read.  You get even more answers if you search for “DC-3 Range”.

It’s worth noting that there are more versions of the DC-3 then almost all other aircraft.

General concensus averages 1500NM.  The Just flight DC-3 carrys 4800lbs usable.  = 797.34 gallons of avgas.

Flying a few test flights by the numbers (as all good DC-3 pilots do) gives a range of  1246nm.  Assuming the Gallons per hour below :

Stock JF DC-3
4800lbs of AvGas = 797Gallons
Warm up and stuff = 10 gallons.
Takeoff 320GPH for 2 mins. = 10.6 Gallons
Initial Climb = 255gph for 5 mins = 21.25 Gallons.
Normal Climb = 120gph for 30 mins = 65 Gallons.
Cruise = 100gph for 6:40 =675 gph.
Approx total Fuel Used = 771.25 by my reconong, but 797 actually used.
797 Gallons Give a range of 1246 with a scalar of 1.19 (original) = 1.56 Miles per Gallon.

the numbers above are accurate enough (within 2%), but not accurate to a real DC-3. That would burn 90 in a normal cruise. And generally 10% Less for each cycle of the flight.

To be able to increase the range I took a 2 pronged approach. From spending some time in Excel I’ve summised that the FSX DC-3 burn around 10% more fuel then the should as per the real aircraft. It’s worth noting that differant RW aircraft will burn slightly less or more per hour, but the 10% is worked out from an average the RW pilots give.

To bring the FSX DC-3’s into line I’ve increased the available fuel from from 4800lbs to a more accurate (aircraft version dependant)

Modified DC-3 (just flight DC-3 with Fuel scalar and fuel amounts changed)

Total = 6000lbs fuel = 996.7 Gallons
996 Gallons give approx 1557 with scalar of 1.19 (Originial Scalar) = 1.56 Miles per Gallon.
996 Gallons give approx 1611 with scalar of 1.15 = 1.66 Miles Per gallon.

This may need looking at again,  but it seems good for a start.

Eric returned to the hunting lodge we have retired to smelling of paint thinners and looking smug.   I asked him to look at the fuel usage as I think it’s too high per hour.  He mentioned that 50year old engines are not going to burn what the book says.   Since the engines were rebuilt by the company he used to work for I suggested it was in his interest to consider my request.

There is an opinion that I’m working Eric too hard,  espically when we take his age into account.   In response he can rest when we are in the air..