Knowee
Questions
Features
Study Tools

For a normally aspirated engine with a CSU equipped propeller if the throttle and pitch lever are not adjusted a climb to a higher altitude will result inQuestion 38Select one:a.MP and RPM increasingb.MP and RPM remaining constantc.MP and RPM decreasingd.MP decreasing and RPM increasinge.MP decreasing and RPM remaining constantf.MP increasing and RPM remaining constant

Question

For a normally aspirated engine with a CSU equipped propeller if the throttle and pitch lever are not adjusted a climb to a higher altitude will result inQuestion 38Select one:a.MP and RPM increasingb.MP and RPM remaining constantc.MP and RPM decreasingd.MP decreasing and RPM increasinge.MP decreasing and RPM remaining constantf.MP increasing and RPM remaining constant

🧐 Not the exact question you are looking for?Go ask a question

Solution

The answer is c. MP and RPM decreasing.

Here's why:

  1. As an aircraft climbs to a higher altitude, the air becomes less dense. This means there is less air available for the engine to use for combustion.

  2. The manifold pressure (MP) will decrease because there is less pressure pushing air into the engine.

  3. The constant speed unit (CSU) will try to maintain a constant RPM (revolutions per minute) by adjusting the pitch of the propeller. However, because there is less air, the propeller will have less to "bite" into, and the RPM will also decrease.

  4. If the throttle and pitch lever are not adjusted to compensate for the decrease in air density, both MP and RPM will continue to decrease as the aircraft climbs.

This problem has been solved

Similar Questions

With a CSU propeller as altitude is increased a constant power output requires an increase inQuestion 35Select one:a.RPM and MAP using pitch control and throttleb.RPM onlyc.Manifold pressured.Throttle setting and richer mixture

If the pitch control lever on a normally aspirated engine fitted with a CSU is moved to decrease RPM with no adjustment made to the position of the throttle, the manifold pressure willQuestion 29Select one:a.Remain unalteredb.Increasec.Decreased.Increase then decrease

Loss of governor oil pressure to a counter-weight fitted propeller would be indicated byQuestion 23Select one:a.Decreasing RPM increasing MPb.Increasing RPM decreasing MPc.Constant RPM increasing MPd.Constant RPM decreasing MP

If a propeller governor senses overspeed it will move the propeller blades towardsQuestion 18Select one:a.Fine pitch and increased propeller torqueb.Coarse pitch and increased propeller torquec.Fine pitch and decreased propeller torqued.Coarse pitch and decreased propeller torque

When the propeller pitch check is made the RPM shouldQuestion 22Select one:a.Increase because the pitch has increasedb.Decrease because the pitch has decreasedc.Increase because the pitch has decreasedd.Decrease because the pitch has increased

1/3

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.