Prediction of Payload Internal Pressure

Abstract

An analysis of the internal pressure history of sounding rocket payloads as they ascend through the atmosphere was conducted. The analysis was concerned mainly with compressible flow and included the affects of choking. Computer programs were developed that successfully predict the internal pressure from trajectory data. The programs were based on both the theoretical analysis and mathematical models of the flow rates of various venting components used in relieving the payload internal pressure. The mathematical models were developed from empirical data gathered during testing. The payload model can be set up with any combination of relief valves and air filters, and has provisions for including leaks due to doors and seals. Sample program results for several payloads are included along with the program listings.

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Document Details

Document Type
Technical Report
Publication Date
Sep 04, 1980
Accession Number
ADA094128

Entities

People

  • Christopher P. Krebs

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Computer Programs
  • Computers
  • Differential Equations
  • Digital Computers
  • Equations
  • Flow
  • Flow Rate
  • Fluid Flow
  • Gas Laws
  • Internal Pressure
  • Mach Number
  • Mass Flow
  • Mathematical Analysis
  • Mathematical Models
  • Procedures (Computers)
  • Relief Valves
  • Specific Heat

Readers

  • Astronomy and Astrophysics.
  • Combustion and Flow Dynamics.
  • Theoretical Analysis.