Refine Your Search

Topic

Search Results

Viewing 1 to 16 of 16
Technical Paper

Thermal Control in an Ambitious, Low-Cost Small-Sat Program

1998-07-13
981640
Development, fabrication and launch of the German X-ray satellite ABRIXAS has been implemented as a pilot project in order to minimize program costs by introducing new management, procurement and verification methods. For the thermal control subsystems key issues are the early project involvement of thermal engineers in an integrated team, a competitive procurement policy without rules imposed by the customer and a verification philosophy which combines extensive thermal analysis with a reduced thermal test program involving critical components and a spacecraft system test. Besides these subjects the paper includes a description of design verification of critical units by analysis and thermal balance tests.
Technical Paper

Proteus Small-Sat Family: Multi-Mission Thermal Control Design and Performances

2006-07-17
2006-01-2041
The generic PROTEUS program was initiated by CNES and Alcatel Alenia Space by the end of 1996 to develop a multi mission platform for LEO small scientific Satellites. From a thermal control point of view, the ambitious aim was to base the mission adaptability solely on the modification of the radiator sizes and the active thermal control software parameters. The Satellite JASON-1 (successor of Topex Poseidon), which was launched in December 2001 is the first application of the PROTEUS platform. Thanks to more than 4 years of exploitation (designed for 5 years), the PROTEUS/JASON-1 thermal control has definitely proven its robustness. Because of this successful flight operation, 5 other platforms have been contracted. These platforms will benefit from developments to bear the heavier and more dissipative payloads to be launched between 2006 to 2008. Calipso, the first Satellite which benefits from these imrovements was delivered to launcher authority in July 2005.
Technical Paper

Emerging Loop Heat Pipe Applications for Small-Sat, MARS Mission and ISS

2002-07-15
2002-01-2464
Loop Heat Pipes (LHP) emerge as standard equipment for spacecraft thermal control. Based on a co-operation agreement between TAIS, Moscow and OHB-System AG, Bremen several thermal control projects for Mars mission, ISS and small satellites have been initiated, which are all based on loop heat pipes. The thermal control systems, described in this paper, are currently under development or hardware manufacturing. The paper will detail the application scenario, development steps and first test results.
Article

Orbex debuts innovative smallsat launch vehicle

2019-02-20
Orbex, a developer of small satellite (smallsat) launch vehicles based in Forres, Scotland, has unveiled its “Prime” launch vehicle. The rocket utilizes several novel technologies, including the world’s largest metal rocket engine produced as a single piece through additive manufacturing (AM).
Technical Paper

Development Of The Miniature Spacecraft Energy Retention (MiSER) Thermal Control Panel

2001-07-09
2001-01-2219
Over the past two years, Starsys and The Johns Hopkins University Applied Physics Laboratory (APL) have been working toward the development of a thermal panel that uses a spacecraft’s internal power to control its temperature. The panel incorporates two different thermal technologies: a thermal switch and a high conductivity composite radiator. While thermal switches have been used before, the design and testing costs associated with each new design make them an undesirable alternative. The MISER panel incorporates a fully tested thermal switch with a radiator into a modular system that can be easily added onto any spacecraft structure. The lightweight radiator makes it self-supporting, so interfaces with the mounting structure are simplified. The same panel can provide thermal control over a wide range of environmental conditions, making constellation spacecraft viable with significantly different orbits.
Magazine

Aerospace & Defense Technology: October 2021

2021-10-01
Developing Object Detection Systems for Autonomous Underwater Vehicles Developing Thermoplastic Composites for Use in Commercial Aircraft An Automated System for Multi-Physics Modeling Taking the Tactical Cloud with You Small Form Factor, Modular Data Centers at the Edge of the Battlefield Remanufacturing Reimagined How Selective Electroplating Extends Service Life and Reduces the Cost of Aerospace Components Satellite Paves the Way for Improved Storm Tracking Solar-Powered Satellite Hardware in Orbit Impact of Satellite Intelligence, Surveillance and Reconnaissance on Modern Naval Operations Determining whether afloat availability of satellite ISR, a technology that is relatively new, fundamentally changed naval operations and if so, to what degree. 3D Data Acquisition Platform for Human Activity Understanding Implementing motion capture devices, 3D vision sensors, and EMG sensors to cross validate multi-modality data acquisition and address fundamental research problems involving the representation and invariant description of 3D data, human motion modeling and applications of human activity analysis, and computational optimization of large-scale 3D data.
Magazine

Aerospace & Defense Technology: June 2022

2022-06-01
Designing for Space and Other Extreme Environments The Next Generation of Mission-Critical Communications Infrastructure is Here Designing Transportable, High-Performance AI Systems for the Rugged Edge Digitalization in the Aerospace Sector From Product Design to Manufacturing & Operations 3D Printing Metal Parts on a Ship What Does the Navy Require to Make the Dream a Reality? Pushing the Boundaries of RF Passive Hardware with Additive Manufacturing What is Pulse Shaping? Unmanned Aircraft Systems to Support Environmental Applications within USACE Civil Works The U.S. Army Corps of Engineers (USACE) has identified a number of research and development (R&D) opportunities to help reduce disaster risks, including cost-efficient technology, such as un-manned aircraft system (UAS) technology for accurate, detailed, and timely two-dimensional and three-dimensional monitoring of coastal and riverine landscapes.
Magazine

Aerospace Engineering 2003-05-01

2003-05-01
Le Bourget trends and issues The 45th Paris Air Show will provide industry players a gathering place to discuss the past, present, and future after two years of seemingly non-stop challenges to the industry. Working on the floor Automated data-capture technologies can obtain, validate, and process time, labor, and other information for improved productivity and efficiency in aerospace manufacturing. Space-age materials A team of researchers are studying the properties of cosmic rays to gain a better understanding of the radiation environment encountered during space travel. Avionics testing IFR has designed a new navigation communications ramp test set to replace its industry-standard workhorse.
Magazine

Aerospace & Defense Technology: August 2021

2021-08-01
Thermal Management Techniques in Avionics Cooling Curing the Porosity Problem in Additive Manufacturing Space-Qualified Crystal Oscillators Reimagining Automated Test During a Pandemic EW: New Challenges, Technologies, and Requirements Software Enables New-Age, Flexible Test Solution for Analog and Digital Radios Formal Process Modeling to Improve Human-Decision-Making During Test and Evaluation Range Control Using the Innoslate software tool to formally model the process of conducting test range events can expose previously overlooked ambiguities and identify high-value decision points? Test and Evaluation of Autonomy for Air Platforms Tools, approaches, and insights to confidently approach the safe, secure, effective, and efficient testing of autonomy on air platforms.
Article

Firefly Aerospace is the latest addition to Florida’s “Space Coast”

2019-03-01
Cedar Park, Texas-based Firefly Aerospace, Inc. has reached an agreement with Space Florida – the state’s aerospace economic development agency – to establish a facility at Cape Canaveral Spaceport. Through the agreement, Firefly, a spacecraft and launch vehicle developer and provider of launch and in-space services, will conduct launch operations at Cape Canaveral’s Space Launch Complex 20 (SLC-20) and create manufacturing facilities at Exploration Park, Florida.
Article

CubeSat prototype to use water as propellant

2017-08-27
A new type of micropropulsion system for miniature satellites, or CubeSats, uses tiny nozzles that release precise bursts of water vapor to maneuver the spacecraft.
Article

OneWeb ramps up satellite production with new round of funding

2019-03-21
OneWeb has secured $1.25 billion in its latest funding round. The company, which seeks to deploy a satellite communication network by 2021 that will enable global high-speed, low-latency Internet access, has now raised a total of $3.4 billion to fund its mission. Tokyo-based Softbank Group Corp., Mexico’s Grupos Salinas, San Deigo-based Qualcomm Technologies Inc., and the Government of Rwanda led the last round of funding.
Article

Virgin Galactic takes first passenger to space

2019-02-26
Virgin Galactic’s spaceplane, SpaceShipTwo or “VSS Unity,” made its fifth powered test flight and second space flight late last week with three individuals on board. In addition to pilots Dave Mackay and Mike Masucci, Virgin Galactic’s first non-pilot passenger and the world’s first female commercial spacefarer – Beth Moses – also qualified for commercial astronaut wings from the Federal Aviation Administration.
Article

Pseudo satellite, potential disrupter, flies on sunlight

2016-04-26
Zephyr 8 has a wingspan of 25 m and can carry 50% more batteries than the earlier version, yet is 30% lighter. This translates into a UAV that can carry a heavier payload and is designed to, typically, stay in the air continuously for over a month
X