445N (100-lbf) LO2/LCH4 reaction control engine technology development for future space vehicles

In the future very large observatories planned as part of the Astronomical Search for Origins may require significant advances in focal planes, large apertures, active and adaptive wavefront control, and distributed thermal management systems. The…

Future spacecraft are envisioned as autonomous, miniature, intelligent and massively distributed systems. At the Surrey Space Centre, a research project is currently under investigation, which aims to develop a picosatellite sensor network using the…

In the present study, a 17 kW, stationary, direct- injection diesel engine has been converted to operate it as a gas engine using producer-gas and compressed natural gas (CNG) as the fuels on two different operational modes called SIPGE (Spark…

Ongoing work at National Aeronautics and Space Administration Goddard Space Flight Center (NASA/GSFC), seeks to apply standard Internet applications and protocols to meet the technology challenge of future satellite missions. Internet protocols and…

Active phased array antennas used in radar systems have been under development for over 40 years. A key part of the development is focused on low cost, high performance transmit/receive (T/R) modules. T/R modules and phased array antennas are used…

Human exploration and development of space is aimed at opening the space frontier by exploring, using, and enabling the development of space and expanding the human experience into the far reaches of space. This includes increasing human knowledge…

A brief survey is given of the International Stirling Engine Conferences (ISECs) since 1982, aimed at providing an insight into the international development trends over the last eight years. The discussion covers international participation,…

The proposed first through fourth generation of future NASA Reusable Launch Vehicles (RLV) within NASA will be described, in general, along with their relative goals for improvement in performance (i.e., cost, safety, life, and turnaround time). A…

We report a development of a portable dewar with a double-stage ADR in it, and its cooling test results. The purpose of this system is to establish a cooling cycle of double-stage adiabatic demagnetization from 4.2 K to 50 mK, which is strongly…

Many candidate concepts of future reusable launch vehicles (RLVs) have been proposed in the world. From the present technology level, however, it is difficult to realize the RLVs. This requires multidisciplinary analysis and optimization, which is a…