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Fuel Cells, Part 2
...kg/kW-hr. Therefore, at cruise, the engine output is approximately 7.2kg/hr/0.350kg/kW-hr = 21 kW. Assuming no change in propeller efficiency, to duplicate the performance of the installed IC engine, an...
Fuel Cells, Part 1
...with electric propulsion systems. For example, when a gasoline engine runs out of fuel, it may be difficult to get the engine primed and restarted in the air, even if...
Fuel Cells, Part 3
...peak power per pound, electric motors have a huge benefit over gasoline-fueled engines. For a similar power rating, the electric motor can weigh significantly less than a comparable gasoline engine...
Let’s go on Safari
...it used beefy, well-proven components such as the Lycoming engine. Unfortunately, it lacked pizzazz and state-of-the-art engineering. Although it enjoyed marketing success amongst those who could appreciate the importance of...
Auto Engines for Aircraft, Part 1
...of certified aircraft engines and believe they can save money by using a converted automobile engine. There have been many successful installations of such engines, but the builder must be...
Auto Engines for Aircraft, Part 2
...cu.in. Aircraft Engine4.3L V-6 Auto/industrial Engine5.7L V-8 Auto/industrial Engine Displacement (cu. in.) (road car)36262350Bore (in.)5.14.04.0Stroke (in.)4.33.53.5Number of cylinders468Cylinder arrangementhorizontalVVRated power (hp @ urp)180 @ 2700120@ 3000198 @ 3000Engine weight (lb.)295388582Including cooling...
Gyroplane Safety
...Fatal Sequence As the rotor is unloaded, both control thrust and the drag of the rotor disc fall off rapidly. With a high engine thrustline (relative to the vertical c.g....
Homebuilt vs. Certified
...be fitted with two 10-gallon auxiliary fuel tanks. (By comparison, the Cessna 172 with a 160-hp Lycoming engine, similar to the Symphony’s engine, carries 42 gallons.) Both the GlaStar (left)...
First Time Builders
...straining. Make a realistic budget including tools that you will need. Some builders are surprised to find that an engine often costs as much as the airframe kit. And some...
In Case You Missed It
Solving a Calibration Conundrum
Of all things, I never dreamed that out of the 40+ screwdrivers and dozens...
Clattering About Diesels
DeltaHawk’s DHK180 engine has received its FAA certification. Yes, that’s the same inverted-vee, four-cylinder,...
