A 1965 C-172 can get either 15.1 or 17.8 mpg at 75% or 44% power respectively (no wind). That’s an immediate savings of 18%.

A 1980 C-152 can either get 16.9 or 21.1 mpg at 75% or 46% power respectively (no wind). That’s an immediate savings of 25%.

The same spreadsheet shows that with a 40mph headwind, fuel savings is still obtained by throttling back. Same airplanes in a 40mph headwind:

C-172 gets 15.3 or 16.1 mpg at 75% or 44% respectively

C-152 gets 8.3 or 8.5 mpg at 75% or 46% respectively

Obviously the immediate answer is to Throttle Back. This isn’t theoretical or a future concept. This is right now, today.

]]>The numbers:

Total flight time: 4h33m (glider and tow plane/two take-offs, two landings)

Fuel used: 2 gallons of 100LL

Cost of fuel: $12

My total cost: $22.50

Burn rate: 0.44 gallons per hour

Efficiency: 105 sm per gallon

Fun factor: Off the scale

There are lots of choices available. If stick time is your goal, a glider is among the most cost-effective alternatives. Inside the cockpit it’s simple. It’s outside that’s complex. Of course, touch and goes are a challenge. Everything has trade-offs.

Oscar Charlie

]]>Dr. Rogers – thanks for chiming with a little more of the technical side. Interesting.

George – Motor glider. A segment I hadn’t considered. With prices that match the LSA scale, they seem like a good option. Wonder why we aren’t seeing more…

Vince – Good point about seeking out cheaper fuel, although I’ll put in a shameless plug for AOPA fuel prices http://www.aopa.org/members/airports/. Sorry I looked. FDK is up to $6.32/gallon. I wonder how much people are actually flying out of the way in search of cheaper fuel. Sounds like a subject for another blog.

]]>If you want to stay with an airplane, consider the top of the line airplane LSA burning about 4 gallons per hour of autogas at 100 knots or 5 GPH at 120 knots. Modern technology LSA are about half the weight, more streamlined, and have more efficient propulsion systems than older designs.

]]>Donovan Moore

Spring Green, WI

breakupexxonmobil.com