Numerical Analysis of a PRD for a Tethered Lighter than Air Vehicle
- Author Nagarjunavarma Ganna
- Co-Author Gundeboina Mallesh, Govind Nandipati, Ravindra kommineni, K.Veeranjaney
- DOI
- Country : India
- Subject : Mechanical Engineering
Keywords : Lighter than air vehicle, Payload Recovery Device, Double Chamber Envelope, Terminal Velocity
Abstract
This paper presents the results of simulation studies carried out using CAE softwares. In this simulation, the trajectory and velocity of descent of the payload after tether breakage under various operating conditions are estimated. Results are reported for a lighter than air vehicle with spherical shaped envelope consisting of a double chamber. The results indicate that the terminal velocity attained by the envelope is independent of the initial altitude of deployment and hole diameter, but is a strong function of the volume of undeflated chamber of the envelope. The amount of drift from deployment location, however, depends on the size of the hole created, and initial altitude of deployment.
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