1 Real Physics and Interstellar Travel
... measurement of warp speeds and attempts to explain the different scales. Chapter 7 - Appendix, finally, provides a collection of constants, a glossary of terms and a reference list. ...
... measurement of warp speeds and attempts to explain the different scales. Chapter 7 - Appendix, finally, provides a collection of constants, a glossary of terms and a reference list. ...
Lunar Reconnaissance Orbiter Project Technical Resource
... Nutation Time Constant (NTC). The overall mass allocation did not change since the launch vehicle capability remained the same. The project has now settled on using an Evolved expendable launch vehicle (EELV) verses an intermediate class launch vehicle (Delta-IV or Altas-5) per Headquarters’ (HQ) di ...
... Nutation Time Constant (NTC). The overall mass allocation did not change since the launch vehicle capability remained the same. The project has now settled on using an Evolved expendable launch vehicle (EELV) verses an intermediate class launch vehicle (Delta-IV or Altas-5) per Headquarters’ (HQ) di ...
Asteroid Mining Negative - GDI
... now. Space experts say such a voyage could take several months longer than a journey to the moon and entail far greater dangers. "It is really the hardest thing we can do," NASA Administrator Charles Bolden said. Going to an asteroid could provide vital training for an eventual mission to Mars. It m ...
... now. Space experts say such a voyage could take several months longer than a journey to the moon and entail far greater dangers. "It is really the hardest thing we can do," NASA Administrator Charles Bolden said. Going to an asteroid could provide vital training for an eventual mission to Mars. It m ...
Attitude and Orbit Control for small satellites
... exceptional. The cost for satellites tend to increase exponentially with the performance; thus it is really tricky to design a craft with high pointing accuracy without getting a too expensive one. To keep the cost down, expensive measurement and propulsion instruments must be as simple as possible; ...
... exceptional. The cost for satellites tend to increase exponentially with the performance; thus it is really tricky to design a craft with high pointing accuracy without getting a too expensive one. To keep the cost down, expensive measurement and propulsion instruments must be as simple as possible; ...
Comparison of Return to Launch Site Options for a Reusable
... similar to a conventional airplane. The major deterrent to developing a RLV has been the large upfront development cost without the launch frequency necessary to justify that cost. The only partially reusable vehicle developed is the Space Shuttle which has shown to have large operation expenses and ...
... similar to a conventional airplane. The major deterrent to developing a RLV has been the large upfront development cost without the launch frequency necessary to justify that cost. The only partially reusable vehicle developed is the Space Shuttle which has shown to have large operation expenses and ...
Iodine Propellant Space Propulsion
... Initial testing with the Busek BHT-200 showed that I2 yields performance similar to Xe, with higher thrust to power F / P and/or efficiency at some operating points.2,12,13 Plume divergence was also lower with I2. At nominal operating conditions, wetted probe measurements at the center of the plum ...
... Initial testing with the Busek BHT-200 showed that I2 yields performance similar to Xe, with higher thrust to power F / P and/or efficiency at some operating points.2,12,13 Plume divergence was also lower with I2. At nominal operating conditions, wetted probe measurements at the center of the plum ...
Validating a Novel Theoretical Expression for Burn time and
... permits a more effective flight path. Therefore, there is a benefit to vehicle mass, flight performance, and cost in having a higher initial thrust during the boost phase of the flight, followed by a lower thrust (often 10% to 30% of the boost thrust) during the sustained phase of the powered flight ...
... permits a more effective flight path. Therefore, there is a benefit to vehicle mass, flight performance, and cost in having a higher initial thrust during the boost phase of the flight, followed by a lower thrust (often 10% to 30% of the boost thrust) during the sustained phase of the powered flight ...
The United States, Japan and the Aerospace
... per cent with a doubling of output.9 Thus, relatively high cumulative outputs are necessary for profitability: sales which can only be generated by export orders. As Benkard noted, this has implications for the organisation of the firm. The learning curve is manifest in the evolving knowledge and sk ...
... per cent with a doubling of output.9 Thus, relatively high cumulative outputs are necessary for profitability: sales which can only be generated by export orders. As Benkard noted, this has implications for the organisation of the firm. The learning curve is manifest in the evolving knowledge and sk ...
III. Single Objective Optimization
... NTEREST in unmanned vehicles (UV) has increased significantly in the last several years for both military and civilian applications. Due to the increase in levels of automation used, there is a shift in UV research away from manually controlling vehicles to managing vehicles at the supervisory contr ...
... NTEREST in unmanned vehicles (UV) has increased significantly in the last several years for both military and civilian applications. Due to the increase in levels of automation used, there is a shift in UV research away from manually controlling vehicles to managing vehicles at the supervisory contr ...
also available online
... For simplicity, this review will assume circular orbits. Tethers can be in an ellipse; those are just more complicated to discuss. The two connected objects will move at the orbital velocity of their center of mass. If they have unequal masses, the lighter end will be farther from that center of mas ...
... For simplicity, this review will assume circular orbits. Tethers can be in an ellipse; those are just more complicated to discuss. The two connected objects will move at the orbital velocity of their center of mass. If they have unequal masses, the lighter end will be farther from that center of mas ...
Electric Propulsion
... •Spontaneous combustion occurs when exposed to many materials •NTO is hypergolic when combined with most fuels •High vapor pressure requires relatively heavy tank •Used in numerous Russian rockets, the Titan booster series, and the Space Shuttle attitude control •Highly toxic - exposure limit < 5 pp ...
... •Spontaneous combustion occurs when exposed to many materials •NTO is hypergolic when combined with most fuels •High vapor pressure requires relatively heavy tank •Used in numerous Russian rockets, the Titan booster series, and the Space Shuttle attitude control •Highly toxic - exposure limit < 5 pp ...
MSG-3
... arriving at Mars, TGO in elements. The first one is the Trace Gas Orbiter, which was orbit, orbital paths TGO placed successfully into orbit around Mars and has completed - Animations: ExoMars many calibration tests since. Now it is aerobraking as to uncoupling of achieve a circular orbit by spring ...
... arriving at Mars, TGO in elements. The first one is the Trace Gas Orbiter, which was orbit, orbital paths TGO placed successfully into orbit around Mars and has completed - Animations: ExoMars many calibration tests since. Now it is aerobraking as to uncoupling of achieve a circular orbit by spring ...
AF04-T005
... medium is a charged colloidal stream (a collection of charged nanometer-sized droplets), or following recent developments, a collection of ions extracted from the same liquid. The acceleration is electrostatic, and, significantly, no plasma is involved in the charged particle production. There are s ...
... medium is a charged colloidal stream (a collection of charged nanometer-sized droplets), or following recent developments, a collection of ions extracted from the same liquid. The acceleration is electrostatic, and, significantly, no plasma is involved in the charged particle production. There are s ...
Table of Contents
... by someone else to turn that invention into a useful product elsewhere. This is where spin-off from space technologies comes into its own, and why it can take so long for some ideas or technologies to reach the marketplace. A pioneer or dreamer will still have his dream regardless of whether the tec ...
... by someone else to turn that invention into a useful product elsewhere. This is where spin-off from space technologies comes into its own, and why it can take so long for some ideas or technologies to reach the marketplace. A pioneer or dreamer will still have his dream regardless of whether the tec ...
Space Exploration
... As little was known about the impact of spaceflight on living creatures at the time of Laika's mission, and the technology to de-orbit had not yet been developed, there was no expectation of Laika's survival. Some scientists believed humans would be unable to survive the launch or the conditions of ...
... As little was known about the impact of spaceflight on living creatures at the time of Laika's mission, and the technology to de-orbit had not yet been developed, there was no expectation of Laika's survival. Some scientists believed humans would be unable to survive the launch or the conditions of ...
Sample Title Slide Presentation Title Here
... ever increasing performance, density, and above all flexibility from FPGAs. The Virtex families of re-configurable FPGAs provide the technology to meet these demands. Various members of these families are currently available in both COTs and SMD formats, as well as in radiation tolerant versions. Xi ...
... ever increasing performance, density, and above all flexibility from FPGAs. The Virtex families of re-configurable FPGAs provide the technology to meet these demands. Various members of these families are currently available in both COTs and SMD formats, as well as in radiation tolerant versions. Xi ...
CCA Overview - Aeroflex Microelectronic Solutions
... At Cobham Semiconductor Solutions, we have A Passion for Performance. It is this passion and commitment that propels us to continuously strive to do better for our customers by meeting or exceeding all requirements and expectations while maintaining costeffectiveness. We are Solution-Minded, Perform ...
... At Cobham Semiconductor Solutions, we have A Passion for Performance. It is this passion and commitment that propels us to continuously strive to do better for our customers by meeting or exceeding all requirements and expectations while maintaining costeffectiveness. We are Solution-Minded, Perform ...
Benesch Aerospace and Automotive Market Intelligence
... composites over the forecast period of 20142020. However, higher prices and recyclability issues regarding the aerospace composites are anticipated to hinder the growth of the market in near future. • Lower fuel prices could impact demand as carriers re-think their jetliner replacement plans, part ...
... composites over the forecast period of 20142020. However, higher prices and recyclability issues regarding the aerospace composites are anticipated to hinder the growth of the market in near future. • Lower fuel prices could impact demand as carriers re-think their jetliner replacement plans, part ...
Eye sky in the
... that Phantom Works President Darryl Davis gives when asked why Boeing is building Phantom Eye. A hydrogen-powered, High Altitude Long Endurance, or HALE, demonstrator, Phantom Eye is being designed and built at Boeing facilities in St. Louis and Seattle as well as Irvine and Huntington Beach in Cali ...
... that Phantom Works President Darryl Davis gives when asked why Boeing is building Phantom Eye. A hydrogen-powered, High Altitude Long Endurance, or HALE, demonstrator, Phantom Eye is being designed and built at Boeing facilities in St. Louis and Seattle as well as Irvine and Huntington Beach in Cali ...
Introduction to Electric Propulsion
... contract to study effects of high temperatures and radiation of space on physical and magnetic properties of samariumcobalt (SmCo), and potential improvement of thermal stability in a vacuum at temperatures up to 550°C. SmCo permanent magnets used for space power generation with Stirling linear alte ...
... contract to study effects of high temperatures and radiation of space on physical and magnetic properties of samariumcobalt (SmCo), and potential improvement of thermal stability in a vacuum at temperatures up to 550°C. SmCo permanent magnets used for space power generation with Stirling linear alte ...
p1013_label_s
... I/O Modules tolerant of different voltages and standards. This is critical as other devices on-card will be of varying technologies (commercial applications tend to not have this problem to a large extent). Support for high-speed arithmetic (e.g., fast carry chains, multipliers, etc.) Simple archite ...
... I/O Modules tolerant of different voltages and standards. This is critical as other devices on-card will be of varying technologies (commercial applications tend to not have this problem to a large extent). Support for high-speed arithmetic (e.g., fast carry chains, multipliers, etc.) Simple archite ...
Article: - Swift - Sonoma State University
... Telescope (UVOT) and the X-ray Telescope (XRT) - can also study the burst. If Swift can turn very quickly and the burst is long enough, all three telescopes can study the burst simultaneously, providing information about the burst at many different wavelengths of light. It is therefore important for ...
... Telescope (UVOT) and the X-ray Telescope (XRT) - can also study the burst. If Swift can turn very quickly and the burst is long enough, all three telescopes can study the burst simultaneously, providing information about the burst at many different wavelengths of light. It is therefore important for ...
Near Earth Asteroids: The Celestial Chariots
... One of the consequences of using a conventionally shielded spacecraft is the large amount of mass that must be put into space. The cost of doing this behooves mission planners to design the interplanetary spacecraft with longevity in mind to reduce the need for expensive launches. However, long-term ...
... One of the consequences of using a conventionally shielded spacecraft is the large amount of mass that must be put into space. The cost of doing this behooves mission planners to design the interplanetary spacecraft with longevity in mind to reduce the need for expensive launches. However, long-term ...
Next Exit 0.5 Million Kilometers
... leisurely travel, not the fastest, most direct routes between points. But the quickest paths in outer space are all toll roads (it costs a lot of rocket fuel to use them), while you can ride the Interplanetary Superhighway almost for free. Gravity does the driving, so the system is really more like ...
... leisurely travel, not the fastest, most direct routes between points. But the quickest paths in outer space are all toll roads (it costs a lot of rocket fuel to use them), while you can ride the Interplanetary Superhighway almost for free. Gravity does the driving, so the system is really more like ...
Spaceplane
A spaceplane is an aerospace vehicle that operates as an aircraft in Earth's atmosphere, as well as a spacecraft when it is in space. It combines features of an aircraft and a spacecraft, which can be thought of as an aircraft that can endure and maneuver in the vacuum of space or likewise a spacecraft that can fly like an airplane. Typically, it takes the form of a spacecraft equipped with wings, although lifting bodies have been designed and tested as well. The propulsion to reach space may be purely rocket based or may use the assistance of airbreathing jet engines. The spaceflight is then followed by an unpowered glide return to landing.Only five spaceplanes have successfully flown to date, having reentered Earth's atmosphere, returned to Earth, and safely landed — the North American X-15, Space Shuttle, Buran, SpaceShipOne, and Boeing X-37. All five are considered gliders. As of 2015, only these aircraft and rockets have succeeded in reaching space. Two of these five (X-15 and SpaceShipOne) are rocket-powered aircraft, having been carried up to an altitude of several tens of thousands of feet by an atmospheric mother ship before being released, and then flying beyond the boundaries of the earth's atmosphere under their own power. Three (Space Shuttle, Buran, and X-37) are vertical takeoff horizontal landing (VTHL) vehicles relying upon rocket lift for the ascent phase in reaching space and atmospheric lift for reentry, descent and landing. The three VTHL spaceplanes flew much further than the aircraft launched ones, not merely leaving the earth's atmosphere but also entering orbit around it, which requires at least 50 times more energy on the way up and heavy heat shielding for the trip back. Also, of the 5 vehicles, three have been piloted by astronauts, with the Buran and X-37 flying unmanned missions.