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Jet turbine reliability
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June 5th 15, 05:59 PM posted to rec.aviation.soaring
Dan Marotta
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Posts: 4,601
Jet turbine reliability
....And let's not forget to amortize the extra $40-50,000 for acquisition
cost. So, if you land out 40 times during the life of the glider, don't
you also add $1,000+ to the cost of the retrieve?
Neglecting, of course, resale to someone else who doesn't want the
adventure of a field landing.
On 6/4/2015 7:54 PM,
wrote:
On Thursday, June 4, 2015 at 5:34:36 PM UTC-4, wrote:
The M+D turbine manual specifies diesel or JetA1 mixed with 4% 2 stroke oil or Aeroshell 560 turbine oil. The tanks are about 42 litres. It gobbles fuel but a one way direct climb and glide retrieve flight will be cheaper than a return road retrieve (by the time you add fuel and vehicle depreciation etc)- but obviously more than a turbo retrieve.
Gobble as well as gulp...with Jet A at +/- $5 a gallon and AeroShell 560 at $15 a quart that works out to north of $100.00 to fill up the JS-1. Still certainly preferred to landing out a gold-platted crystal slipper 90 miles from home.
So lets round off to $1.00 per M&D jet sustainer mile. Retrieve would be $.65 to $.85 a one-way mile so 180 x $.75 = $135. Certainly not a Solo but still cheaper than a retrieve by road or aero.
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Dan Marotta
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