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Under recent contract to JPL for the New Millennium Space Technology 7 Program (ST7) AEC-Able Engineering (ABLE) developed a Scalable Solar Sail Subsystem (S). The S is a minimal mass propulsion subsystem that can be mounted to a general heritage spacecraft to provide continuous low level thrust. The design baseline is a 3-axis-stabilized 4-quadrant square sail with attitude controlled through ...

SAIL is a Framework Programme 7 project that aims at providing scalable and adaptive solutions to enhance the Internet Although not a formal continuation of the 4WARD project, SAIL integrates many of the advanced concepts developed there. One of the focuses of the project, Cloud networking (CloNe), can be conceived as the successor of the Virtual Networks activities in 4WARD. This article conce...

Physalia physalis, commonly known as the Portuguese man-of-war (PMW), is a peculiar looking colony of specialized polyps. The most conspicuous members of this colony are the gas-filled sail-like float and the long tentacles, budding asymmetrically beneath the float. This study addresses the sailing of the PMW, and, in particular, the hydrodynamics of its trailing tentacles, the interaction betw...

This paper investigates displaced periodic orbits at linear order in the circular restricted Earth-Moon system (CRTBP), where the third massless body utilizes a hybrid of solar sail and a solar electric propulsion (SEP). A feedback linearization control scheme is implemented to perform stabilization and trajectory tracking for the nonlinear system. Attention is now directed to binary asteroid s...

The growing population of space debris poses an increasing threat to spacecraft operating in low Earth orbit. By taking advantage of aerodynamic drag, a gossamer sail can be used to dramatically reduce the time it will take for a satellite to deorbit. In addition to rapid deorbit time, a gossamer sail also offers the capability of stabilizing a satellite’s attitude. The deployment system utiliz...

In this Paper, an algorithm which improves CRAFT algorithm’s efficacy is developed. CRAFT is an algorithm widely used to solve facility layout problems. Our proposed method, named Plasma, can be used to improve CRAFT results. In this note, Plasma algorithm is tested in several sample problems. The comparison between PALSMA and classic CRAFT and also Micro-CRAFT indicates that Plasma is successf...

We present a general approach in 1H-detected 13C solid-state NMR (SSNMR) for side-chain signal assignments of 10-50 nmol quantities of proteins using a combination of a high magnetic field, ultra-fast magic-angle spinning (MAS) at ~80 kHz, and stereo-array-isotope-labeled (SAIL) proteins [Kainosho M. et al., Nature 440, 52-57, 2006]. First, we demonstrate that 1H indirect detection improves the...

The NASA In-Space Propulsion (ISP) program has been sponsoring system design development and hardware demonstration activities of solar sail technology over the past 16 months. Efforts to validate by test a moderate-scale (10-m) 1⁄4-symmetry ground demonstration sail system are nearly complete. Results of testing and analytical model validation of component and assembly functional, strength, st...