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Snapshots From the Whirlwind
...to hot-rod a turbine engine—that was already done by Walter or Pratt & Whitney—there’s something of power, temperature, and fuel limits on the turbines. The Sport guys say they’ve run...
Aircraft Modification Choices
...the interior as a highlight. Today you can find anything from upgraded door handles, Teflon hoses, retractable gear and turbine power mods. It’s almost impossible to discern which ones are...
Oil Filter Testing
...where the sole criteria for approval is likely to be container integrity under pressure and a bypass valve. Only turbine design has a specific requirement related to filtration, stated in...
Build, Test, Refine and Fix—Part 3: High-Speed Taxi Testing
...airplane would not rotate and coming up with appropriate modifications to fix the issue. Make one change at a time. Avoid the temptation to go for the quick fix. Evaluate...
CompAir 6.2 Piston and Turbine Singles at Sun ‘n Fun 2025
CompAir designer Ron Lueck briefs us on the two CompAir models being shown at Sun ‘n Fun 2025. The piston-powered version, with a 350-hp twin-turbocharged Lycoming, has been seen before....
Sport Class Air Racing: Rules Rewrite!
...in, which should help participation. The addition of turbine power could be a game changer as the lightweight (but thirsty and expensive) turbines promise big power with excellent reliability. Certainly...
Build, Test, Refine and Fix—Part 2: Taxi Testing
...or any unexpected behavior from the airplane it is critical to address it immediately. Do not go any faster until you understand and resolve the issue. Also resist the temptation...
2025 Engine Buyer’s Guide
...power for a piston engine. It is notably less expensive to purchase and operate than a turbine. Several STCs are underway for the AO3-005, among them one to replace Pratt...
Iterate, Modify and Fix
...engines. The turbines are typically more powerful but significantly lighter than the piston engines they replace. Because of this, the turbine engine must be moved forward significantly to keep the...
Becoming a DAR
...any kind of certificate. Of interest to homebuilders are DARs with “function codes” like 147 (E/A-B piston) and 148 (E/A-B turbine). Other codes exist for those authorized for rotorcraft or...
In Case You Missed It
Clattering About Diesels
DeltaHawk’s DHK180 engine has received its FAA certification. Yes, that’s the same inverted-vee, four-cylinder,...
Drill Guide for Canard Install
Neighbor Phil Hooper's Velocity RG project is making serious progress. With the installation of...
