Beginner - Want to ask why the Cirrus 20 G6 throttle is not linear operation, which is too difficult for a beginner to operate
Perhaps elaborate on why you think it’s not linear?
Welcome to COPA Peony. The alternative to the single power lever would be two levers, one for prop RPM and a throttle. I am not sure that’s easier for beginners, on a go around it’s often forgotten to go full prop RPM. That’s not possible in a Cirrus.
There are downsides, but I would argue not for beginners, rather for experienced pilots who want to control throttle and prop separately.
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May be referring to the prop linkage.
I am guessing he means the detent in the power lever that operates the prop cable?
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Peony, welcome to COPA.
The Cirrus throttle lever is uniquely designed to control both the throttle cable and the propeller governor cable with one lever.
When you advance the throttle lever, there is a point where the induction throttle cable reaches maximum wide open throttle position (WOT). Continuing to push forward beyond that, the lever is only controlling the propeller, and you will not see the manifold pressure change any further.
Your flight instructor will be able to explain further, but we’d like to encourage you to become a member of COPA which will open a wealth of knowledge and training opportunities for you.
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I think the answer is that the “throttle” actually is both a throttle and a prop control combined into one lever. The non-linear operation is probably considered easier for beginners than having two separate controls (throttle & prop), which is what most other planes with controllable pitch aka constant speed prop have.
In addition, with the two separate controls, a beginner could accidentally stress the engine by, for example, running high power with low prop RPM - this is essentially impossible to do with the single lever Cirrus power lever.
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throttle is linear, propeller control is not. Same lever, 2 functions. Study the systems you are trying to operate.
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While I really like the Cirrus solution that would be my smallest concern. You always have your hand across ALL levers (black and red, or black, blue and red). If you have learned to fly like that you will never forget it.
Unless you started in a Cirrus and much later went to an old airplane like I did and forgot the prop lever.
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