The Aviation Thread

[Lisa89125]

That V12 in the car is pretty sweet! I love the sounds of the Allison V12 engines. I used to like watching NTPA the tractor pulling shows just to see the V12 aircraft powered pullers and the helicopter turbine engine powered tractor pullers. A good night it can be hard to decide which is better? The Allison can deliver power a lot quicker than the turbines. However, The brute power of a gas turbine can outperform the Allison V12. The turbines just take longer to get spooled up and must be tuned to perfection.

Lisa

[KathyLauren]

Turbine spool-up time is serious business.  We were not allowed to reduce power below 65% RPM on final in case we needed power in a hurry.  Even from 65%, the wind-up time to 100% was about three or four seconds.  From idle (50%), it would take much longer.

[steph2.0]

Turbine spool-up time is serious business.  We were not allowed to reduce power below 65% RPM on final in case we needed power in a hurry.  Even from 65%, the wind-up time to 100% was about three or four seconds.  From idle (50%), it would take much longer.

The high-RPM Rotax engines surprise even the Lycoming/Continental drivers. Idle is no lower than 1600rpm, and when the prop is being driven on approach you usually can't get it below 2200 or so. And if the carbs are balanced properly, when you jam on the throttle there is thrust right now! No hesitation, stumbling, burps, or spool-up. It can catch you out if you're used to carbs with accelerator pumps.