Remotely Controlled Steering Gear For A Laser-Driven Rocket With A Parabolic Thruster

Scharring, Stefan; Hoffmann, Daniela; Eckel, Hans‐Albert; Röser, Hans‐Peter

doi:10.1063/1.3435461

Cited by 3 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, an alternative to a remote (laser-based) control loop was already presented in [6,11]. By tilting the ignition pin (or an ablative propellant rod) against the symmetry axis of the nozzle, c m,lat and c L can be signi¿cantly varied allowing for an onboard control loop.…”

Section: Control Loopsmentioning

confidence: 99%

Beam-Riding Analysis of a Parabolic Laser-thermal Thruster

Röser¹,

Eckel²,

Scharring³

2011

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

Flight experiments with laser-propelled vehicles (lightcrafts) are often performed by wire-guidance or with spin-stabilization. Nevertheless, the speci¿c geometry of the lightcraft's optics and nozzle may provide for inherent beam-riding properties. These features are experimentally investigated in a hovering experiment at a small free Àight test range with an electron-beam sustained pulsed CO 2 high energy laser. Laser bursts are adapted with a real-time control to lightcraft mass and impulse coupling for ascent and hovering in a quasi equilibrium of forces. The Àight dynamics is analyzed with respect to the impulse coupling ¿eld vs. attitude, given by the lightcraft's offset and its inclination angle against the beam propagation axis, which are derived from the 3Dreconstruction of the Àight trajectory from highspeed recordings. The limitations of the experimental parameters' reproducibility and its impact on Àight stability are explored in terms of Julia sets. Solution statements for dynamic stabilization loops are presented and discussed.

show abstract

Section: Control Loopsmentioning

confidence: 99%