Predicted Forcing Functions and Force Measurements on an Outrigger Rocket Sled Traveling Through a Blast Environment
Abstract
A technique was developed for predicting the aerodynamic forcing functions acting on an outrigger rocket sled as it traversed a blast environment. This technique was programmed on the CDC 3600 computer. In order to computerize the technique, the time histories of the blast parameters were approximated by first and third order polynomial equations. The sled trajectory was transformed into the scaled time and distance coordinates of the blast parameters. The steady state aerodynamic coefficients as a function of Mach number obtained from wind tunnel tests were approximated by third order polynomials. These steady state coefficients were used at discreet times to define the aerodynamic forces acting on the vehicle as it traversed the blast environment. The report also describes the load transducer used to measure the lateral forces acting on the front slipper of the outrigger rocket sled. The time history of these measured forces and lateral acceleration data are discussed. A maximum force on the front slipper of 76,000 pounds was recorded on one of the runs. Also included is information on the vehicle structural vibration frequencies, which was obtained from reduction of test data in the form of power spectral density.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1967
- Accession Number
- AD0667514
Entities
People
- Daniel J. Krupovage