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INTO THE BEYOND: A CREWED MISSION TO A NEAR-EARTH OBJECT
ABSTRACT Aside from the exploration of Mars, the objects that most capture our interest for a new human visit are the Near-Earth Objects (NEOs). These objects are ideal candidates for deep space operations and explorations as we extend the human presence out into the solar system. The notion of a crewed mission to a NEO was first discussed in the Apollo era. The most recent assessment has been undertaken by the Advanced Projects Office within NASA’s Constellation Program. This particular study examined the feasibility of sending NASA’s new Orion spacecraft (also referred to as the Crew Exploration Vehicle, or CEV) to a NEO. Depending on the specifications of spacecraft and integrated components, a mission profile would include two or three astronauts on a 90- to 180-day spaceflight; including a 7- to 14-day stay at the NEO itself. These missions to NEOs provide Exploration with an excellent suite of benefits: operational experience beyond cislunar space; risk reduction for space hardware; confidence building for future mission scenarios; in situ resource utilization evaluation; as well as a rich scientific return. This incremental step along the way towards Mars would mark humanity’s first foray beyond the Earth-Moon system.
JSC2011-E-015760 (21 Jan. 2011) --- The Lockheed Martin Orion team at NASA’s Michoud Assembly Facility in New Orleans inspects the Orion crew module ground test structure prior to shipping. From there, the spacecraft goes to Lockheed Martin’s Denver facilities to be integrated with an encapsulating aeroshell to provide thermal protection before undergoing rigorous testing to verify it can withstand the harsh environments of a deep space mission. The aeroshell will complete the exterior of the spacecraft, as depicted in the hanging banner displayed in the upper left. Photo credit: NASA or National Aeronautics and Space Administration
Originally posted by Illustronic
Well you edited the post after I replied. I'm well aware of the progress of the components, but they have no planned mission, and my point is that your previous post is from the late 60's and early 70's. Where is it now?
CURRENT CREWED NEO STUDY The objective of the 2006-20007 NASA study was to examine the flight elements of the Constellation Program, such as the Orion manned spacecraft as well as the Ares launch vehicles, for suitability for deep space missions beyond the Moon, and in particular, missions to NEOs. These missions can test Cumulative PHOs and NEOs 1990-2020 Yr #NEO>140m #NEO>100m #PHO>140m #PHO>100m 1990 100 100 20 20 1995 300 300 60 60 2000 800 800 160 160 2005 3000 3000 600 600 2010 6000 10000 1200 2000 2015 30000 50000 6000 10000 2020 40000 80000 8000 160004 spacecraft systems, operational techniques, c r ew expe r i enc e , and a cqui r e pr a c t i c a l knowledge of NEO physical characteristics (e.g., internal structure and composition).
Previous studies were reviewed as a starting point for establishing mission objectives and identifying candidate target bodies and mission profiles. Mission objectives would be updated in consultation with Constellation P r o g r am mi s s i o n d e s i g n e r s a n d NEO scientists. The existing database of NEOs was mined to identify candidate targets. The study used special software to identify candidate NEOs with short trip times and low v’s in the appropriate time frame (late 2010s t h r o u g h t h e 2 0 2 0 s ) . P e r f o r m a n c e characteristics of the Orion spacecraft and Ares launch vehicles were analysed against the mission requirements for a selected set of candidate targets
At first order, the NEOs that are good targets of opportunity for initial piloted missions are those with the following characteristics: • Earth-like orbits (low eccentricity and low inclination), • close Earth approaches (i.e., ~0.05 AU of the Earth – a potentially hazardous object or PHO), • slow rotation (i.e., rotation periods of ~10 hours or longer), • single, solitary objects (nearly 1/6 th of all NEOs are binary objects) • asteroidal origin (i.e., not a cometary or extinct comet, or transition object) Some 35 candidate NEOs for exploration by piloted CEV missions were found in the current NEO catalog. Four launch options were assessed. These ranged from using an Ares 1/CEV with an EELV to launch a Centaur-class upper stage for NEO orbit injection, to the full Ares 1 and Ares V launch systems.
CONCLUSIONS As new telescopes come on line in the next few years (e.g., Pan-STARRS in 2010 and the LSST in 2014), and/or as an expanded survey by NASA gets underway, the number of new NEOs d e t e c t e d i s e x p e c t e d t o g r ow exponentially. Depending upon their orbital parameters and geometries (relative to Earth), these newly discovered NEOs offer many targets for a visit using the Ares launch vehicles and Orion spacecraft, demonstrating and va l ida t ing an e a r ly int e rpl ane t a ry capability of the Constellation hardware.
Originally posted by scottlpool2003
Would it be possible to set up camp on an asteroid and hitch a lift somewhere?
How fast do these things go? Faster than we can go?
An asteroid has an average orbital speed (how fast an object orbits the sun) of 25 kilometers per second. However, asteroids orbiting closer to a sun will move faster than asteroids orbiting between Mars and Jupiter and beyond. The closest orbiting asteroid found so far is 2004 JG6 with an approximate orbital velocity of over 30 kilometers per second. The asteroid was discovered at the Lowell observatory on May 10, 2004.
Originally posted by zookey
When the space suits cannot be used to enter a nuclear reactor (confirmed by manufacturer)
how do you expect the astronauts to go past the van allen belts into space to an asteroid for long periods of time and be healthy to do their job?
Originally posted by kdog1982
ABSTRACT. The notion of a crewed mission to a NEO was first discussed in the Apollo era.
Originally posted by CLPrime
I don't know why officials even bother announcing things like this anymore. They must know by now that, as soon as they announce that they're preparing for some potential disaster, the paranoid people are going to be on their heals shouting, "They're preparing for a disaster! They must know a disaster's coming! A disaster's coming! We're all gonna die!"
NASA should just shut up and do thing secretly from now on. But, then, that would start a whole new set of conspiracy theories, wouldn't it?