Found another Engineering students Thesis on aerocaps I thought you guys might like to review.
There are some nice CFD graphics and a curved Aerocap was found to reduce the Cd the most. The fuel efficiency gain comes out to about 1 mpg in the calculations derived from the students CFD simulations.
I have experienced a higher percentage of fuel efficiency gain at around 3 mpg or 15% at sustained freeway speeds. Round.boater has seen a 15% increase also in the fuel efficiency of his truck since running an Aerolid, which he has recorded in his fuel log here on ecomodder.
round.boaters fuel log
http://ecomodder.com/forum/em-fuel-l...vehicleid=2565
In the last paragraph of the thesis, on future work, the student states a need to test an aerocap on a truck in the real world along with other aerodynamic devices.
Link
http://csus-dspace.calstate.edu/xmlu...pdf?sequence=1
Bondo