Laser material test results from Russian high-power carbon monoxide laser

Johnson, Ray O.; Dymshits, B. M.; Ivanov, G. R.; Mescherskiy, A. N.; Reilly, James P.; Lander, Michael L.

doi:10.1117/12.240421

Cited by 4 publications

(2 citation statements)

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“…To achieve high performance, the reduced mass flow rate must be compensated by a high specific enthalpy. Clearly, such high average power lasers are not yet available although some designs exist [1]. The current laser technology applicable to laser propulsion is roughly 100 kW average power at 10:6 m wavelength (CO 2 laser).…”

Section: Ideal Performancementioning

confidence: 99%

Laser Propulsion for Ground Launch

Resendes¹,

Mota²,

Mendonça³

et al. 2007

Journal of Propulsion and Power

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Ground-to-orbit launch using laser propulsion requires a thermal system. A number of such thermal thruster concepts have been developed in the past. Thus far, only the laser-supported detonation thruster concept has led to a flight vehicle, the Lightcraft. It is shown via flight simulations and measurements with the Lightcraft that there are no inherent limitations for a ground-to-orbit launch vehicle using laser propulsion. A planar geometry laser-supported detonation thruster using a CO 2 laser is considered and its performance evaluated. A 10-km height flight vehicle using existing lasers is proposed. Nomenclaturespecific enthalpy of gas, height h P = Planck's constant h lsr = laser site altitude h ref = atmospheric scale height I abs = laser intensity absorbed by gas I sp = specific impulse k = absorption coefficient k B = Boltzmann's constant m = mass _ m= mass flow rate n X = number density of X P = power p = pressure q = specific heat added to gas r = radius r hot spot = vehicle hot-spot radius r lsr = laser main deflector radius T = temperature u = velocity in shock-fixed reference frame v = velocity in laboratory reference frame abs = atmospheric absorption coefficient R slant = slant range = efficiency = semivertex angle = longitude = wavelength = density = laser frequency = latitude e = Earth's rotational velocity

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Section: Ideal Performancementioning

confidence: 99%

Laser Propulsion for Ground Launch

Resendes¹,

Mota²,

Mendonça³

et al. 2007

Journal of Propulsion and Power

View full text Add to dashboard Cite

show abstract

“…So far, the best experimental results were achieved in the mid-1990s by Dymshits et al who had designed and built the first full-scale working mock-up of the supersonic open-cycle continuous wave (CW) CO laser, which repeatedly demonstrated the average lasing power of around 200 kW and proved the laser's conceptual workability. [10][11][12] While construction of the full-scale 1 MW average power technological supersonic CO laser prototype (further referred to as CODL) is still in progress, the theoretical research produced the mathematical modeling and simulations of the CODL operation in CW and Q-switched modes, followed by the plausible estimates of its operation under various conditions, including the multi-MW laser design. [13][14][15][16][17] By the wide scope of its technological capabilities, CODL can be classified as a key enabling technology.…”

Section: High Average Power Lasersmentioning

confidence: 99%