1 Real Physics and Interstellar Travel
... The whole theory is based on two postulates: 1. There is no invariant "fabric of space" or "ether" relative to which an absolute speed could be defined or measured. The terms "moving" or "resting" make only sense if they refer to a certain other frame of reference. The perception of movement is alwa ...
... The whole theory is based on two postulates: 1. There is no invariant "fabric of space" or "ether" relative to which an absolute speed could be defined or measured. The terms "moving" or "resting" make only sense if they refer to a certain other frame of reference. The perception of movement is alwa ...
Lunar Reconnaissance Orbiter Project Technical Resource
... level of Design Maturity, a percent contingency is assigned to the resource and a resource value is calculated. At the Spacecraft Systems Lead’s discretion, some or all of that contingency resource value is allocated to the subsystem. The remaining contingency resource value is maintained as System ...
... level of Design Maturity, a percent contingency is assigned to the resource and a resource value is calculated. At the Spacecraft Systems Lead’s discretion, some or all of that contingency resource value is allocated to the subsystem. The remaining contingency resource value is maintained as System ...
Comparison of Return to Launch Site Options for a Reusable
... vehicle developed is the Space Shuttle which has shown to have large operation expenses and a long turn around time. Its solid rocket boosters must be extracted from the ocean and undergo long maintenance procedures to clean out the salt water. All unmanned launches around the world currently make u ...
... vehicle developed is the Space Shuttle which has shown to have large operation expenses and a long turn around time. Its solid rocket boosters must be extracted from the ocean and undergo long maintenance procedures to clean out the salt water. All unmanned launches around the world currently make u ...
RPC-ICA: THE ION COMPOSITION ANALYZER OF
... of the solar wind energy and momentum exchange with comet 67/P Churyomov– Gerasimenko based on the knowledge gained from missions to Mars. References to the latter are e.g. Luhmann and Schwingenschuh (1990) (single particle pickup) or Pérez-de Tejada (1987), Lundin and Dubinin (1992), Lundin et al. ...
... of the solar wind energy and momentum exchange with comet 67/P Churyomov– Gerasimenko based on the knowledge gained from missions to Mars. References to the latter are e.g. Luhmann and Schwingenschuh (1990) (single particle pickup) or Pérez-de Tejada (1987), Lundin and Dubinin (1992), Lundin et al. ...
Validating a Novel Theoretical Expression for Burn time and
... surface area changes over the motor’s burn time. The various grain geometries alter the initial burning surface, which determines the initial mass flow rate and the initial thrust. The hot reaction gases of the burnt propellant flow along the perforation or grain cavity toward the nozzle. For amateu ...
... surface area changes over the motor’s burn time. The various grain geometries alter the initial burning surface, which determines the initial mass flow rate and the initial thrust. The hot reaction gases of the burnt propellant flow along the perforation or grain cavity toward the nozzle. For amateu ...
Low energy particle spectrometer for 3-axis stabilized spacecraft Yoshifumi Saito
... Express (Barabash et al., 2006) and ASPERA-4 on Venus Express can cover similar size of the solid angle. IMA has a wide annular field of view centered by the annular 2π radian field of view of the standard top-hat type analyzer by electrically scanning its field of view by +/−45 deg. The latest exam ...
... Express (Barabash et al., 2006) and ASPERA-4 on Venus Express can cover similar size of the solid angle. IMA has a wide annular field of view centered by the annular 2π radian field of view of the standard top-hat type analyzer by electrically scanning its field of view by +/−45 deg. The latest exam ...
Projeto de desenvolvimento de um propulsor do tipo Hall
... The main objective of PHALL project and research is to develop a Hall Plasma Thruster with innovative and new concepts, in which, an array of permanent magnets is used to produce and accelerate plasma with efficient propellant mass use, high specific impulse and low electric power consumption. ...
... The main objective of PHALL project and research is to develop a Hall Plasma Thruster with innovative and new concepts, in which, an array of permanent magnets is used to produce and accelerate plasma with efficient propellant mass use, high specific impulse and low electric power consumption. ...
Experimental Study of the Machian Mass Fluctuation Effect
... Figure 4 depicts the Mach5C device mounted on the thrust balance. This is a preliminary arrangement where the electrical connections are not yet implemented. On the left it is possible to see the counterweight: the white Teflon blocks next to it constitute part of the damping system actuator. The ar ...
... Figure 4 depicts the Mach5C device mounted on the thrust balance. This is a preliminary arrangement where the electrical connections are not yet implemented. On the left it is possible to see the counterweight: the white Teflon blocks next to it constitute part of the damping system actuator. The ar ...
Chapter 6
... and opposite forces on each other. However, the effect of the force is not always the same. Imagine two hockey players moving at the same speed toward each other, one with twice the mass of the other. The force on each during the collision is the same strength, but they do not have the same change i ...
... and opposite forces on each other. However, the effect of the force is not always the same. Imagine two hockey players moving at the same speed toward each other, one with twice the mass of the other. The force on each during the collision is the same strength, but they do not have the same change i ...
Electric Rocket Propulsion
... • Most efforts focused on applications with exhaust velocities (Isp) greater than arc jets • Typically require higher powers than currently available on in-space vehicles • Exhaust speed ue ∝ j 2 m ...
... • Most efforts focused on applications with exhaust velocities (Isp) greater than arc jets • Typically require higher powers than currently available on in-space vehicles • Exhaust speed ue ∝ j 2 m ...
Momentum – Concept Overview
... spaceship keeps moving after it gets blasted. Momentum (p): The product of an object’s mass(m)and velocity(vvector) so p=mv. Can be: – Linear: momentum of an object moving in a straight line (pool ball on table) – Angular: momentum of an object moving NOT in straight line (rotation) Newtons 3 Laws o ...
... spaceship keeps moving after it gets blasted. Momentum (p): The product of an object’s mass(m)and velocity(vvector) so p=mv. Can be: – Linear: momentum of an object moving in a straight line (pool ball on table) – Angular: momentum of an object moving NOT in straight line (rotation) Newtons 3 Laws o ...
Solid propellant thruster for space application
... Choose a simple mission scenario Calculate the velocity decrement due to the atmospheric drag From the performances of our DEMO thrusters calculate the number of shots required to compensate the velocity ...
... Choose a simple mission scenario Calculate the velocity decrement due to the atmospheric drag From the performances of our DEMO thrusters calculate the number of shots required to compensate the velocity ...
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 ...
to see a sample homework problem set from Dynamics
... 12.103 The Chandra X-ray observatory, launched in 1999, achieved an elliptical orbit of minimum altitude 6200 mi and maximum altitude 86,900 mi above the surface of the earth. Assuming that the observatory was transferred to this orbit from a circular orbit of altitude 6200 mi at point A, determine ...
... 12.103 The Chandra X-ray observatory, launched in 1999, achieved an elliptical orbit of minimum altitude 6200 mi and maximum altitude 86,900 mi above the surface of the earth. Assuming that the observatory was transferred to this orbit from a circular orbit of altitude 6200 mi at point A, determine ...
H2Go: The Untapped Power Source ASME Student Design
... Insert Picture of Device As the bucket falls, the Kevlar line unwinds on the vehicle generating a rotating motion The bucket falls and contacts the release mechanism rolling the vehicle forward The vehicle touches the ground and rolls down the course ...
... Insert Picture of Device As the bucket falls, the Kevlar line unwinds on the vehicle generating a rotating motion The bucket falls and contacts the release mechanism rolling the vehicle forward The vehicle touches the ground and rolls down the course ...
Slide 1
... – The British Project Daedalus explored theory of continual fusion via pellets; – These are all currently beyond our technology. ...
... – The British Project Daedalus explored theory of continual fusion via pellets; – These are all currently beyond our technology. ...
Dusty Plasma Solar Sails
... NASA's Human Exploration Initiative has refocussed on high-efficiency, highthrust rocket propulsion, which has returned attention to the potential of nuclear rockets to provide a unique, high-efficiency, high-thrust propulsion technology. There have been many nuclear rocket designs suggested over th ...
... NASA's Human Exploration Initiative has refocussed on high-efficiency, highthrust rocket propulsion, which has returned attention to the potential of nuclear rockets to provide a unique, high-efficiency, high-thrust propulsion technology. There have been many nuclear rocket designs suggested over th ...
Momentum-Impulse-Collisions - juan
... when fired. This recoil is the result of action-reaction force pairs. A gunpowder explosion creates hot gases that expand outward allowing the rifle to push forward on the bullet. Consistent with Newton's third law of motion, the bullet pushes backwards upon the rifle. The acceleration of the recoil ...
... when fired. This recoil is the result of action-reaction force pairs. A gunpowder explosion creates hot gases that expand outward allowing the rifle to push forward on the bullet. Consistent with Newton's third law of motion, the bullet pushes backwards upon the rifle. The acceleration of the recoil ...
Interstellar probes: are they feasible with present technology?
... • requiring current or near-term technology • requiring as low cost as possible (compatibly with feasibility) • entailing data return times well less than a normal job lifetime • involving truly international co-operation ...
... • requiring current or near-term technology • requiring as low cost as possible (compatibly with feasibility) • entailing data return times well less than a normal job lifetime • involving truly international co-operation ...
Mission to Mercury
... Ion engines use beams of ions (charged atoms or molecules) to create thrust in accordance with Newton’s 3rd Law. Unlike a chemical rocket which burns fuel very quickly, an ion engine produces much less thrust but can keep running for a long time. This allows a spacecraft to slowly build up speed and ...
... Ion engines use beams of ions (charged atoms or molecules) to create thrust in accordance with Newton’s 3rd Law. Unlike a chemical rocket which burns fuel very quickly, an ion engine produces much less thrust but can keep running for a long time. This allows a spacecraft to slowly build up speed and ...
Chapter18
... • We cannot travel at the speed of light, but we can send and receive radio waves and other electromagnetic waves at the speed of light. • In this sense, we are virtual interstellar ...
... • We cannot travel at the speed of light, but we can send and receive radio waves and other electromagnetic waves at the speed of light. • In this sense, we are virtual interstellar ...
Newton’s Laws of Force
... is this law different from the other two? Forces don’t cancel each other out even if they are equal and opposite. There are always two objects involved If forces are equal then how can a swimmer move through the water? Newton’s second law determines the acceleration of an object ...
... is this law different from the other two? Forces don’t cancel each other out even if they are equal and opposite. There are always two objects involved If forces are equal then how can a swimmer move through the water? Newton’s second law determines the acceleration of an object ...
U08_Prop1-Intro_v2 - Port Fest Baltimore 2015
... to drive train (line shaft losses: 2-5%) ENGINE converts Thermal Energy to Mechanical Energy (efficiencies < 50%) Thermal Energy produced by the combustion of fuel ...
... to drive train (line shaft losses: 2-5%) ENGINE converts Thermal Energy to Mechanical Energy (efficiencies < 50%) Thermal Energy produced by the combustion of fuel ...
Spacecraft propulsion
Spacecraft propulsion is any method used to accelerate spacecraft and artificial satellites. There are many different methods. Each method has drawbacks and advantages, and spacecraft propulsion is an active area of research. However, most spacecraft today are propelled by forcing a gas from the back/rear of the vehicle at very high speed through a supersonic de Laval nozzle. This sort of engine is called a rocket engine.All current spacecraft use chemical rockets (bipropellant or solid-fuel) for launch, though some (such as the Pegasus rocket and SpaceShipOne) have used air-breathing engines on their first stage. Most satellites have simple reliable chemical thrusters (often monopropellant rockets) or resistojet rockets for orbital station-keeping and some use momentum wheels for attitude control. Soviet bloc satellites have used electric propulsion for decades, and newer Western geo-orbiting spacecraft are starting to use them for north-south stationkeeping and orbit raising. Interplanetary vehicles mostly use chemical rockets as well, although a few have used ion thrusters and Hall effect thrusters (two different types of electric propulsion) to great success.