This section of the site contains rules of thumb and raw aircraft and engine data for people who like those things.
Quick (and some not-so-quick) calculations for aircraft performance and navigation.
This page should be roughly applicable to any normally-aspirated aircraft piston engine hooked up to a fixed-pitch cruise propeller. It uses different colours in a table to show the relationship between RPM, density altitude, and engine power for small-aircraft pilots.
This page contains linear aerodynamic coefficients for a selection of aircraft ranging from a Cessna 182 to a Boeing 747-200.