Computational Fluid Dynamics for the Aerodynamic Design and Modeling of a Ram-Air Parachute with Bleed-Air Actuators
Abstract
The activation of spoilers on the upper surface of a wing is a relatively new method of achieving longitudinal and lateral control of ram-air canopies, often referred to as parafoils. No numerical studies, however, have fully investigated the 3-D aerodynamic performance of these bleed-air actuators. Simulation results are presented for a finite span, ram-air canopy geometry and several configurations amenable for comparison with wind tunnel experiments and flight test data. Assessments are also made between the resulting flowfields and previously reported 2-D computational fluid dynamics (CFD) results. Evaluations include cases with an asymmetrical trailing edge deflection to simulate a turn and the inclusion of two different bleed-air vents. Lift, drag and roll coefficients correlate well with wind tunnel and flight test results.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 05, 2015
- Accession Number
- AD1015599
Entities
People
- Adam Jirasek
- Andrew J. Lofthouse
- Jürgen Seidel
- Keith Bergeron
- Mehdi Ghoreyshi
- Russell M. Cummings
Organizations
- United States Air Force Academy