Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 125 for “"Space applications"”.
-
A Force Sensor Array for Space Applications
… awareness of contact in harsh environment applications, such as space servicing, has been unsatisfied due to the inability of current sensor technology to resist environmental effects. In this work, capacitive sensors based on a porous polymer-ceramic composite structure were evaluated for …
-
An Inflatable Robotic Manipulator for Space Applications
L'abstract è presente nell'allegato / the abstract is in the attachment
-
An Application Framework for Active Space Applications
… context-sensitive, multi-device and mobile applications. The framework consists of a distributed component-based infrastructure, a mechanism to define applications once and adapt them to different environments automatically, and a configurable management interface.
-
Ultra-thin GaAs Photovoltaics for Space Applications
… them a potentially advantageous power source for spacecraft which need to withstand harsh environments outside Earth’s atmosphere. In the ultra-thin regime, high transmission losses can be mitigated by integrating light management structures with nanoscale features. A new type of ultra-thin …
-
Pressurized Metal Bellows Shock Absorber for Space Applications.
Numerous spacecraft designs exist for exploring the surfaces of planetary bodies and each have their own advantages and disadvantages. All successful landings have been made by stationary landers or wheeled rovers that rely on one-time use mechanisms, such as crushable aluminum honeycomb shock …
-
Volcanology from space: applications of infrared remote sensing
Remote sensing techniques are being used increasingly to address volcanological problems. This thesis is concerned with the interpretation of multispectral infrared data of volcanic thermal features. Data from the two short wavelength infrared (SWIR) bands of the Landsat Thematic Mapper (TM) are …
-
Characterisation of CMOS APS Technologies for Space Applications
… current silicon sensor of choice, CCDs. For some applications, CMOS APSs is believed to present significant advantages over CCDs, such as improved radiation hardness. In this work, the effect of radiation damage on a ‘baseline’ commercial APS, e2v technologies’ Jade APS, is characterised in …
-
Heterojunction A1GaAs-GaAs solar cells for space applications
… reflection) of the heteroface Alo.sGao.2As- GaAs space solar cell is presented. The grid shadow and window layer effects, angle of incidence and the effects of the layer design parameters for AR-coating and window layer on the optical properties are considered in the calculations. A new structure …
-
Dynamics and Control of Smart Structures for Space Applications
… the key emerging technologies for a variety of space systems ranging in their applications from instrumentation to structural design. The underlying principle of smart materials is that they are materials that can change their properties based on an input, typically a voltage or current. When …
-
Development of a soft-landing system for space applications
… technique is used in industrial and scientific applications. For space, it is used to evaluate the distance in critical soft-landing operations of descent vehicles by measuring the backscattered rays from landing surfaces. While the concept is known, its implementation is poorly documented and …
-
Radiation Damage in CMOS Image Sensors for Space Applications
The space radiation environment is damaging to silicon devices, such as Complementary Metal Oxide Semiconductor (CMOS) image sensors, affecting their performance over time or causing total failure. The first part of this work investigates a Charge Coupled Device (CCD) style CMOS image sensor …
-
Reconfigurable Accelerators Design Methods for High Reliability Space Applications
L'abstract è presente nell'allegato / the abstract is in the attachment
-
Ultra-thin III-V photovoltaic technology for space applications
… source for both terrestrial and extraterrestrial applications. To achieve higher power conversion efficiency and resilience to space radiation, III-V semiconductor material-based PV technology is the leading choice for power generation in space applications. However, III-V solar cells are still …
-
Phasing of Ground-based Optical Arrays for Space Applications
Delivery of optical power to targets in space has many applications, including optical communication, active sensing, laser propulsion, and the removal of space debris. However, large monolithic optics required to obtain high directivity are costly and difficult to slew at the rates required to …
-
Principles and techniques for designing flexures for space applications
… important role in precision machine design for space by allowing accurate and repeatable motion through bending of compliant elements. The design of flexures is a non-trivial process due to the interconnection of the kinematics, mechanics, and dynamics. This thesis defines a framework within …
-
Exploring the Performance of Active Thermal Tiles for Space Applications
… electronic component temperatures onboard spacecraft. The ATTs are based on thermoelectric devices that can alter the thermal gradient between the bus and component. Because ATTs do not rely on fluids or moving parts, they are highly reliable devices which make them attractive for use in …
-
Graphene and Related Materials Inks and Composites for Space Applications
… establishment and meteoric rise of a commercial space industry. This opening up of space has spurred the generation of novel ideas and technologies, creating an ecosystem of new companies across the globe poised to play a part in the new space economy by enabling space research, tourism, …
-
Beam-Steerable and Reconfigurable Reflectarray Antennas for High Gain Space Applications
Reflectarray antennas uniquely combine the advantages of parabolic reflectors and phased array antennas. Comprised of planar structures similar to phased arrays and utilizing quasi-optical excitation similar to parabolic reflectors, reflectarray antennas provide beam steering without the need of …
-
Identification and monitoring of oil pipeline spill fire using space applications
… 10 072 oil spill reports from 2007 to 2015. The space-based approach we considered in this dissertation included the use of data gathered by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra and Aqua satellites, which recorded 85 129 active fire hotspots in the Niger Delta …
Page 1 of 7