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.
HCC Reels for Combines and Swathers
... HCC Reels are constructed with tines spaced at 6-inch increments and bat
tubes assembled to stagger the tines. This innovative layout reduces bat
wrapping, reduces reel weight, and creates an effective tine path of
3-inch spacing, reducing working distance between tines by one third.
HCC Reels effec ...
Weather research requirements to improve space launch from Cape
... no lightning observed, radar techniques, field mill
techniques, and integration of these methods.
Some research has been dome on the statistical
approach (Roeder, 2013; Stano et al., 2010; Stano
et al., 2008a; Stano et al., 2008b; Roeder and
Glover, 2005). Some research on radar and
lightning cessat ...
Asteroid Mining Negative - GDI
... Earth on average. Most of the top asteroid candidates are less than a quarter-mile across. The moon is about 2,160 miles in diameter.
Going to an asteroid could provide clues about the solar system's formation, because asteroids are essentially fossils from 4.6 billion
years ago, when planets first ...
NASA Workshop on Scientific Requirements for Mitigation of
... Direct measurements of the surface properties and interior structures of asteroids and
comets should be fundamental elements of future spacecraft missions to these primitive
solar system bodies, according to participants in a scientific workshop held in Arlington,
VA, from September 3-6.
Such inform ...
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 ...
... Airplanes are not the only example of
jet propulsion. Several animals have
adapted jet propulsion in order to get
around. A squid takes water into its
body chamber and rapidly pushes it
out of a backward-facing tube. The
water squirts backward and the squid
jets forward. What are the actionreaction ...
Mindy`s Wheel of Planets
... 1. Assign each child in the group to represent the Sun or one of the eight planets in our solar system
and then give that child the picture of their assigned planet to hold. If there are more than 9 children
in the group, pair up the children or put them into small groups or run the game more than o ...
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 ...
humanity and space - Worcester Polytechnic Institute
... all the variables that need to be addressed. Each asteroid must first be capable of traveling
between Earth’s and Mars’ orbit and also be large enough to both house and shield the
astronauts. The astronauts will travel between planets on the NEAs, while using a small
spacecraft to travel to and from ...
A Proposal for a Cross Support Service Architecture
... There are space and ground users for the same service. We
should consider how to specify these two users. (C. Sunshine)
I think, for a service provided by a CSSE, we should define
space user, ground user, and service utilization manager,
space side interface, ground side interface, and ser ...
... 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 outer space, so
engineers viewed flights by animals
as a necessary precursor to human
MOST Review April 18, 2007 - Massachusetts Institute of Technology
... technology using a thin facesheet with active rigid support. In Proceedings of the SPIE, Volume 3356, Space
Telescopes and Instrumentation, pages 690–701. SPIE, 1998
M. A. Ealey. Fully active telescope. In UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts,
Attitude and Orbit Control for small satellites
... themselves, investigating probes have to be sent out in advance. Their missions
are many, such as communication, global surveillance or planetary research. With
a combined name, these probes are often called articial satellites.
The satellite industry possesses huge possibilities, although the mark ...
... images were obtained and the data gathered by Rosetta will
be studied for years to come. It was the first time a full cycle
of a comet orbiting the sun was observed as it was
accompanied by a spacecraft while its activity changed from
dormant to highly active and back to sleep again.
AFSPC Briefing Template
... – SV01 In Testing Flow
• Baseline thermal vacuum testing completed 23 Dec 15
• Electromagnetic Interference (EMI) test completed 14 May 16
– SV02/03 In Assembly & Integration
– SV04 thru 08 in box level assembly
space wei qi - US Naval War College
... China has not, however, sent a man into space because Jiang Zemin is a space
visionary, yearning to explore the heavens as an expression of humankind’s essential nature. Jiang is a pragmatist, a skilled politician and a technocrat who ascended to power by maneuvering his way through the Byzantine ma ...
Solid propellant thruster for space application
... Ignition and combustion reliability must be improved
• Pyrotechnical material & electronic control
Nozzle theory must be studied because classical
theory breaks down as size and Reynolds number
Solid propellant chemical property are limitative
when dimensions decrease
• Open the technology ...
Fun experiments in astronomy at school
... speed. Now, imagine that the speed of one of these coins will be so fast that it won´t be hitting the Earth but
it will fall beside the Earth. Then its startingpoint must be more than 200 km above the Earth and have a
speed of 8 km/s. It will be outside the atmosphere and will not be stopped by the ...
... •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
Microfluidic Devices –
The Aerodynamic Forces code grew steadily over the course of the
... Fig. A.184.108.40.206.1, XCP vs angle of attack for a 3 stage vehicle at Mach 3
Figure A.220.127.116.11.1 shows that the center of pressure will move aft along the rocket body as angle
of attack changes, which is what we expect for a launch vehicle.3 We have some issues with the
validity of the resul ...
Orbital Maneuvering Vehicle Support To The Space Station
... drift, and the OMV's payload placement and
retrieval capability. A spacecraft whose
ballistic coefficient is less than the SS's is,
for example, deployed above and out of the
plane of the SS. As drag forces act on the
deployed spacecraft, its orbit will decay and
altitude will eventually fall below ...
... • SWx and SFx payloads operate continuously
• Momentum and power restrictions limit WPIx operations
– Field line tracking 1-2 hours/orbit
– TNT VLF high power transmission, 0.5 – 1 hour/orbit at 5 kV
– TNT is in passive or relaxation sounding when not in high-power
– BBR survey, LEE ...
Projeto de desenvolvimento de um propulsor do tipo Hall
... 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.
Non-rocket space launch refers to concepts for launch into space where some or all of the needed speed and altitude are provided by something other than expendable rockets. A number of alternatives to expendable rockets have been proposed. In some systems such as skyhook, rocket sled launch, rockoon and air launch, a rocket is used to reach orbit, but it is only ""part"" of the system.Present-day launch costs are very high – $10,000 to $25,000 per kilogram from Earth to low Earth orbit (LEO). As a result, launch costs are a large percentage of the cost of all space endeavors. If launch costs can be made cheaper the total cost of space missions will be reduced. Fortunately, due to the exponential nature of the rocket equation, providing even a small amount of the velocity to LEO by other means has the potential of greatly reducing the cost of getting to orbit.Getting launch costs down into the hundreds of dollars per kilogram range would make many of the proposed large-scale space projects such as space colonization, space-based solar power and terraforming Mars possible.