Raptor05121
Mooney Apostate
- Joined
- Apr 13, 2010
- Messages
- 1,119
- Reaction score
- 152
Okay, so I'm still learning all of this, so bear with me.
The Cherokee 180 I am flying has a fixed pitch (ukn type) 2-bladed prop on the standard Lyc O-360-A3A or O-360-A4A engine, which (here is where I am getting at) is rated at 180hp at 2700rpm, correct?
Granted the fixed pitch prop can only turn (per the TCDS) a maximum permissible takeoff of 2475 r.p.m, and power output is somewhat linear with revs, does that not mean that you are not getting the full 180hp on takeoff?
I understand the difference between how much a fixed pitch can bite, and the increase in RPM when getting airflow down the runway, and how a CS prop being able to spin 2700rpm. BUT, pure power aspect, it basically is a win-win situation for a constant speed on takeoff. I mean, more power with adjustable pitch means a much shorter takeoff run versus fixed, correct? To me, it just seems like the increased MX gives you a whole bunch of pros all across the flight range.
The Mooney I'm getting into has the O-360-A1D (shower of sparks, I love starting that thing), and at full power (again, 180hp at 2700rpm) it feels like a completely different monster with a lot more power.
Comments/discussion, go. Bonus points for geeky technical numbers and or charts.
The Cherokee 180 I am flying has a fixed pitch (ukn type) 2-bladed prop on the standard Lyc O-360-A3A or O-360-A4A engine, which (here is where I am getting at) is rated at 180hp at 2700rpm, correct?
Granted the fixed pitch prop can only turn (per the TCDS) a maximum permissible takeoff of 2475 r.p.m, and power output is somewhat linear with revs, does that not mean that you are not getting the full 180hp on takeoff?
I understand the difference between how much a fixed pitch can bite, and the increase in RPM when getting airflow down the runway, and how a CS prop being able to spin 2700rpm. BUT, pure power aspect, it basically is a win-win situation for a constant speed on takeoff. I mean, more power with adjustable pitch means a much shorter takeoff run versus fixed, correct? To me, it just seems like the increased MX gives you a whole bunch of pros all across the flight range.
The Mooney I'm getting into has the O-360-A1D (shower of sparks, I love starting that thing), and at full power (again, 180hp at 2700rpm) it feels like a completely different monster with a lot more power.
Comments/discussion, go. Bonus points for geeky technical numbers and or charts.
