Question 1 of 2921866636eea28f7522a1c51b41c

The observed noon to noon run for a 24 hour period is 489 miles. The average RPM for the day was 95. The pitch of the wheel is 22.5 feet. What is the slip of the wheel?

Back
Back
Back
Question 1 of 29218
Study area:
Study area:
Q

The observed noon to noon run for a 24 hour period is 489 miles. The average RPM for the day was 95. The pitch of the wheel is 22.5 feet. What is the slip of the wheel?

No Illustration

This question does not have an illustration

🔍 Key Concepts

• theoretical speed of advance from RPM and propeller pitch • difference between theoretical distance and actual distance run • formula for propeller slip %

💭 Think About

• How many revolutions did the propeller make in 24 hours at 95 RPM, and what total theoretical distance would that cover with a 22.5 ft pitch? • Once you have the theoretical distance in feet, how do you convert that to nautical miles to compare with the 489 miles run? • Slip compares theoretical and actual distance. Should you divide the difference by the theoretical distance or by the actual distance to get slip%?

✅ Before You Answer

• Be consistent with units: keep pitch in feet, time in minutes/seconds, and convert final distance to nautical miles before comparing. • Make sure you use 24 hours × 60 minutes × 60 seconds correctly when finding total revolutions. • When computing slip %, double‑check whether you are using (theoretical − actual) or (actual − theoretical) in the numerator. The sign matters even though the percentage will be small.