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Design and control of solid-fuel ramjet for pseudovacuum trajectories
Philmon George,
Published in AIAA, Reston
2000
Volume: 16
   
Issue: 5
Pages: 815 - 822
Abstract
A ballistic trajectory in air of a powered projectile where the thrust always balances the drag is termed as a pseudovacuum trajectory. For a solid-fuel-ramjet (SFRJ)-powered gun-launched projectile this trajectory can be achieved by the control of engine mass-flow rate, either by a bypass control of inlet air or by a regression rate control of fuel. Based on one-dimensional considerations, the procedures for a preliminary design of the propulsion system for an SFRJ-assisted gun-launched projectile and the methods to calculate the control requirements are presented. Using these, typical configurations of SFRJ suitable for 155-mm gun-launched projectiles are analyzed for different launch angles. The results indicate that the control requirements by either method are minimal and thus, demonstrate the self-throttling characteristics of SFRJ.
About the journal
JournalJournal of Propulsion and Power
PublisherAIAA, Reston
ISSN07484658
Open AccessNo
Concepts (13)
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    AIRCRAFT PROPULSION
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    Control system synthesis
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    Flow control
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    Launching
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    Projectiles
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    Regression analysis
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    Solid propellants
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    Trajectories
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    BYPASS CONTROL
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    GUN LAUNCHED PROJECTILES
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    PSEUDOVACUUM TRAJECTORY
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    SOLID FUEL RAMJETS
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    RAMJET ENGINES