THEORETICAL PREDICTION OF THE FLOW IN THE WAKE OF A HELICOPTER ROTOR. PART 2. FORMULATION AND APPLICATION OF THE ROTOR-WAKE-FLOW COMPUTER PROGRAM
Abstract
Two digital computer programs were prepared which direct the calculation of the time-varying flow in the vicinity of a helicopter rotor in forward or hovering flight. Fuselage interference effects are taken into account. The applicability of these programs to specific problems and procedures for their use are discussed. First, the assumptions made in constructing the mathematical model and the relationship of the model to the physical flow are outlined. In this connection, the assumptions necessary for numerical analysis and the functional structure of the programs are also given. Then, the formulations which were coded are presented. Included in the formulations are the coordinate identifications used and the definitions of program variables. Finally, the procedures for implementation of the programs are given. The relationship of input quantities to aircraft flight parameters, program accuracy and computer running time are specified. A sample calculation, including both inputs and outputs, is presented. Program listings and operational information related to the programs are given.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1965
- Accession Number
- AD0629783
Entities
People
- Peter Crimi
Organizations
- Calspan