CYCLOIDAL CAM TRANSMISSION, PHASES II AND III
Abstract
The report covers a discussion of the basic theory of operation of the cycloidal cam reducer and the results of load testing on two 280-horsepower units. During testing of the first unit, excessive deflection in the reverter cage assembly resulted in improper load distribution and in the failure of bearings and other components. The failure was analyzed, and modifications were incorporated in the second unit. Failure was experienced in the early stages of testing on the second unit. This failure has been attributed to excessive bearing internal clearance and end play that caused skewing of the crank shaft bearings and severe abrasion of the shaft. Although the second unit was much more efficient than the original, power losses and excessive complexity remain as factors limiting the application of the cycloidal cam reducer for helicopter main transmissions.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1965
- Accession Number
- AD0616905