Compare and contrast how a single-shaft engine and a free-wheel engine drive the propeller reduction gearbox. Compare and contrast the operational differences of the single shaft and free-wheel engine on shutdown regarding the propeller. Explore the Internet and the Hunt Library for additional information. Include one reference from an outside source (this should be a source other than those provided to you) in your initial post. Be sure you cite your reference in proper APA format. After posting your initial response, your peers’ posts will be available to view. Post your initial response by the 4th day of the module week. You must respond to two of your classmates by the end of the module week. When responding to your peers, analyze their post, correct any misinformation, and add clarifying concepts.