Experimental Investigation into Beam-Riding Physics of Lightcraft Engines: Progress Report

被引：4

作者：

Kenoyer, David A. ^{[1
]}

Myrabo, Leik N. ^{[1
]}

Notaro, Samuel J. ^{[1
]}

Bragulla, Paul W. ^{[1
]}

机构：

[1] Rensselaer Polytech Inst, Dept Mech Aeronaut & Nucl Engn, Troy, NY 12181 USA

来源：

BEAMED ENERGY PROPULSION | 2010年 / 1230卷

关键词：

Lasers; lightcraft; laser propulsion;

D O I：

10.1063/1.3435435

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A twin Lumonics K922M pulsed TEA CO(2) laser system (pulse duration of approximately 200 ns FWHM spike with 1 us tail) was employed to experimentally measure beam-riding behavior of Type #200 lightcraft engines, using the Angular Impulse Measurement Device (AIMD). Beam-riding forces and moments were examined along with engine thrust-vectoring behavior, as a function of: a) laser beam angular and lateral offset from the vehicle axis of symmetry; b) laser pulse energy (12 to 36 joules); c) pulse duration (100 ns and 1 mu s); and d) engine size (97.7 mm to 161.2 mm). Maximum lateral momentum coupling coefficients (C(M)) of 135 N-s/MJ were achieved with the K922M laser whereas previous PLVTS laser (420 J, 18 mu s duration) results indicated 15-30 N-s/MJ an improvement of 4.5x to 9x. Maximum axial C(M) performance with the K922M is likely to be 4x to 7x larger than lateral C(M) values, but must await confirmation in upcoming tests.

引用

页码：17 / 29

页数：13

共 6 条

[1] Beam-Riding Behavior of Lightcraft Engines with ∼1 μs Pulsed TEA CO2 Laser
Kenoyer, D. A.
Salvador, I. I.
Myrabo, L. N.
BEAMED ENERGY PROPULSION: SEVENTH INTERNATIONAL SYMPOSIUM, 2011, 1402
[2] Experimental Investigation of Axial and Beam-Riding Propulsive Physics with TEA CO2 laser
Kenoyer, D. A.
Salvador, I.
Myrabo, L. N.
Notaro, S. N.
Bragulla, P. W.
INTERNATIONAL SYMPOSIUM ON HIGH POWER LASER ABLATION 2010, 2010, 1278 : 689 - 698
[3] Experimental tests of beam-riding sail dynamics
Benford, G
Gornostaeva, O
Benford, J
BEAMED ENERGY PROPULSION, 2003, 664 : 325 - 335
[4] Experimental tests of beam-riding sail dynamics
Benford, J
Benford, G
Gornostaeva, O
Garate, E
Anderson, M
Prichard, A
Harris, H
SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM-STAIF 2002, 2002, 608 : 457 - 461
[5] EXPERIMENTAL INVESTIGATION OF THE PERCEPTIBILITY OF THE ARTIFICIAL SOURCE FOR THE DOWSING AGENT - PROGRESS REPORT
COMUNETTI, AM
EXPERIENTIA, 1979, 35 (03): : 420 - 424
[6] Progress report on investigation of sagger clays V Preparation of experimental sagger bodies according to fundamental properties
Heindl, RA
Mong, LE
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1929, 12 (07) : 457 - 480

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