Multi Laser Pulse Investigation of the DEAS Concept in Hypersonic Flow

Journal Article · Tue Mar 30 00:00:00 EST 2004 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1721025· OSTI ID:20632950

Minucci, M A.S.; Toro, P G.P.; Oliveira, A C; Chanes, Jr, J B; Ramos, A G; Nagamatsu, H T; Myrabo, L N ^[1]

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1. Laboratory of Aerothermodynamics and Hypersonics, IEAv-CTA, Sao Jose dos Campos - SP 12228-840 (Brazil)

The present paper presents recent experimental results on the Laser-Supported Directed Energy 'Air Spike' - DEAS in hypersonic flow achieved by the Laboratory of Aerothermodynamics and Hypersonics - LAH, Brazil. Two CO2 TEA lasers, sharing the same optical cavity, have been used in conjunction with the IEAv 0.3m Hypersonic Shock Tunnel - HST to demonstrate the Laser-Supported DEAS concept. A single and double laser pulse, generated during the tunnel useful test time, were focused through a NaCl lens upstream of a Double Apollo Disc model fitted with seven piezoelectric pressure transducers and six platinum thin film heat transfer gauges. The objective being to corroborate previous results as well as to obtain additional pressure and heat flux distributions information when two laser pulses are used.

• OSTI ID: 20632950
• Journal Information: AIP Conference Proceedings, Vol. 702, Issue 1; Conference: 2. international symposium on beamed energy propulsion, Sendai (Japan), 20-23 Oct 2003; Other Information: DOI: 10.1063/1.1721025; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CARBON DIOXIDE LASERS
DISTRIBUTION
HEAT FLUX
HEAT TRANSFER
HYPERSONIC FLOW
LASER RADIATION
LASER-PRODUCED PLASMA
LENSES
PIEZOELECTRICITY
PLASMA PRODUCTION
PLATINUM
PROPULSION
PULSES
SODIUM CHLORIDES
SPACE VEHICLES
THIN FILMS
TRANSDUCERS
USES