Charlie,
Back before M33 had Jet A (Pre 1980's), I witnessed Pilots having av gas
pumped in the tanks of mostly Lear Jets that stopped in, mixing the fuel.
This I understand could be done up to a maximum ratio of Av Gas to Jet A.  I
am curious if the rotary could run on a mixture of Heavy fuel and Av gas or
Mo gas?  What would be the maximum ratio that could be burnt without
suffering any derogation?

Just another of those off the wall thoughts

Bob Perkinson

Bob,

 In Japan where kerosene was cheap, but gasoline was expensive they used to mix fuels since the rotary would run on almost anything.

Bill Jepson