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Performance Testing 101     Av Engineer? Have Macintosh?
Computer Aided Flight Testing

Norm Howell: Introducing Vz

Engine   Engine Power Calculator
Propeller   Propeller Efficiency Calculator   Noise
Ram Recovery
Airplane Speed Calculator
Fuel Efficiency Charts   Climb Charts
What Users Say

Engine Modeling
Power   Fuel

Drag Polar Analysis
Instruments & Pitot Static   Drag Polar Flight Tests



Benchmark 3.0 (3.8 MB)
Compatible with OS10.6 to OS10.12 Sierra, Intel Macs

Release Notes
Full working version of the program. If you're new to Benchmark, be sure to download Falco N805SH and M201J1220GPOH below.


N805SH F.8L Falco Airplane, Karl and Steve Hansen
M20J1220GPOH Mooney M20J
Model developed from Mooney POH by Norman Howell & friends

F.8L Falco, Raoul Schild
180 hp IO-360B, 3-Blade MT Propeller


Lycoming IO-320-B1A 160 hp, fuel injected
Lycoming O-360-A 180 hp, carbureted
Lycoming IO-360-B1E 180 hp, fuel injected
Lycoming IO-360-A 200 hp, fuel injected
Lycoming IO-360-A, -C, -D series 200 hp, fuel injected
Model developed from Mooney POH by Norman Howell & friends
Lycoming O-540-J 235 hp, carbureted
Lycoming IO-540-C 250 hp, fuel injected
Lycoming IO-540-D 260 hp, fuel injected
Lycoming IO-540-K 300 hp, fuel injected


Hartzell HC-C2YL-1BF/F7663A-4 72" diameter, two blades
Falco prop
Hartzell HC-C2YL-1BF/F7666A-2 74" diameter, two blades
Falco prop
Hartzell HC-C2YL-1BF/F7666A-4 72" diameter, two blades
Falco prop
Hartzell HC-C2YR-1BFP/F7497 74" diameter, two blades
Blended Airfoil Prop, per Hartzell STC SA02414CH-D for Mooney Aircraft Model(s): M20J, M20A-G; Applicable Engines: O-360-A1D, -A2D & IO-360-A1A, -A3B6(D), -A1B6D, from Norman Howell
Hartzell HC-C3YR-1RF/F7282 74" diameter, three blades
Mooney Top Prop 3-blade conversion, per STC SA4529NM, from Norman Howell
McCauley B2D34C212/78GBA-4 74" diameter, two blades
standard early Mooney M20J prop, from Norman Howell
McCauley Swift Prop 78" diameter, two blades

71" diameter, three blades
MT-Propeller Entwicklung GmbH Composite Scimitar Prop for Mooney Aircraft: M20E, F, and J, from Norman Howell



BenchmarkManual.pdf (1.7 MB) Manual for Benchmark 1.0

Thus it is quite out of date, but explains the operation of the program