Modeling for Active Control of Combustion and Thermally Driven Oscillations [PDF]
, 1991 Organized oscillations excited and sustained by high densities of energy release in combustion chambers have long caused serious problems in development of propulsion systems.
Culick, F. E. C. +3 more
core +1 more source
Multidisciplinary design of a micro-USV for re-entry operations [PDF]
, 2010 Unmanned Space Vehicles (USV) are seen as a test-bed for enabling technologies and as a carrier to deliver and return experiments to and from low-Earth orbit.
Liqiang, Hou +2 more
core +1 more source
Hybrid fuzzy sliding mode control for motorised space tether spin-up when coupled with axial and torsional oscillation [PDF]
, 2010 A specialised hybrid controller is applied to the control of a motorised space tether spin-up space coupled with an axial and a torsional oscillation phenomenon.
Cartmell, M., Chen, Y.
core +1 more source
Effect of tangential swirl air inlet angle on the combustion efficiency of a hybrid powder-solid ramjet [PDF]
, 2019 A new ramjet configuration using powder and solid fuel as propellant is investigated, namely, hybrid powder-solid ramjet (HPSR). Boron particles were used as the powder in this study.
ANSYS Inc +49 more
core +1 more source
On the Angular Momentum of Rockets, Balloons, and Other Variable Mass Systems
, 2016 Variable mass systems are a classic example of open systems in classical mechanics. The reaction forces due to mass variation propel ships, balloons, and rockets. Unlike free constant mass systems, the angular momentum of these systems is not of constant magnitude due to the change in mass.
Nanjangud, Angadh, Eke, Fidelis
openaire +2 more sources
Simulation Model for Hardware-in-the-Loop Tests of the ILR-33 AMBER Rocket Control System
SensorsIn this paper, an advanced flight simulation model of the ILR-33 AMBER rocket is shown. The model is designed for Hardware-in-the-Loop (HiL) tests of the rocket control system.
Dawid Cieśliński +4 more
doaj +1 more source
Analytical control laws for interplanetary solar sail trajectories with constraints [PDF]
, 2008 An indirect method is used to obtain an analytical control law for a spacecraft with a low-thrust propulsion system which is constituted by a solar sail coupled with a solar electric thruster. Constraints on the control inputs for such as the system need
McInnes, C.R., Uchiyama, Kenji
core
Evaluating Energy Absorption Performance of Filled Lattice Structures
Advanced Engineering Materials, EarlyView.Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney +2 more
wiley +1 more source
Demonstration of dual-thrust capability in hybrid rockets using multi-layered tubular fuel grains
FirePhysChemThis study demonstrates the thrust modulation capabilities of a hybrid rocket motor employing a Multi-Layered Tubular (MLT) fuel grain. The MLT configuration involves arranging the fuel grains with distinct regression rates as layers.
Mengu Dinesh +2 more
doaj +1 more source
Beyond Earth: Resilience of Quasi‐2D Perovskite Solar Cells in Space
Advanced Materials, EarlyView.In the article (DOI: 10.1002/adma.202520433), Christoph Putz and co‐workers demonstrate rigid quasi‐2D perovskite solar cells operating in low Earth orbit, delivering stable power for more than 100 days under real‐space conditions. In‐orbit performance is correlated with extensive ground‐based thermal and proton‐irradiation studies on rigid and ...
Christoph Putz +17 more
wiley +1 more source