Gravity Assist Will Help Pluto-Bound Craft
Gravity assist? The New Horizons spacecraft, the first probe ever sent to Pluto and the Kuiper Belt, launched a year ago atop a Lockheed Martin-build Atlas 5 rocket. With an after-burn speed of 36,250 miles per hour, it's NASA's fastest probe ever. How much assistance could it need?
It needs help, because even at that rate, the New Horizons craft would take twelve years to get to Pluto. The "slingshot" effect of Jupiter's gravity will shave about three years off that schedule.
(Gravity assist from Jupiter helps New Horizons craft )
At it's closest approach, the New Horizons spacecraft will come within 1.7 million miles of the gas giant. At present, the probe is about 41 million miles from Jupiter and is now closing in at a speed of about 44,000 miles per hour.
The spacecraft will be seized by Jupiter's gravitational field and hauled along with the gas giant in its orbit. By the time New Horizons breaks free, it should achieve a velocity of about 52,000 miles per hour.
Who first thought of the idea of using a gravity assist to speed space craft through the solar system? The first scientists to work on it were Derek Lawden in 1954 and Michael Minovitch in 1961 at JPL. As far as I know, the first person to explicitly suggest that a gravity assist would work for spacecraft was science fiction writer Ray Cummings in his 1931 novel Brigands of the Moon.
We were at this time no more than some sixty-five thousand miles from the moon's surface. The Planetara presently would swing upon her direct course for Mars. There was nothing that would cause passenger comment in this close passing of the moon; normally we used the satellite's attraction to give us additional starting speed.
(Read more about Ray Cummings' gravity assist)
Read more about Pluto-Bound Spacecraft to Nab Speed Boost in Jupiter Flyby; find out more about gravity assisted space missions. (Technorati Profile)
Scroll down for more stories in the same category. (Story submitted 1/20/2007)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 0 )
Related News Stories -
NASA's LADEE Enters Lunar Orbit
'... dust normally on the surface picks up and keeps a charge.' - Hal Clement, 1956.
Nuclear Interceptors Designed For Planetary Protection
See NASA's concept for a nuclear interceptor.
SpaceX Grasshopper Divert Video
Isn't this the way that rocket ships were meant to land?
Ultrasonic Noise Betrays ISS Leaks
Gentlemen, Be Seated!
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Army's New Bird-Like Surveillance UAV
'The prototype blue-bellied, gray-backed tracer-bird with the wide-angle eye...'
Honda's Tumblebug - The UNI-CUB beta
'A tumblebug does not give a man dignity...'
NASA's LADEE Enters Lunar Orbit
'... dust normally on the surface picks up and keeps a charge.'
3D Printing An Entire Car
"... Almost as good as the original it was printed from."
Aldebaran Robot Talks Like C3PO - Almost
'See Vee Threepio - Vee for versatility - at your service...'
Google's Skin Tattoo Lie Detector
'Three and a half centimetres in diameter, permanently fixed in the centre of his forehead.'
inFORM Dynamic Shape Output Device
Like that pushpin device you remember, but supercharged.
Owlet Vitals, The Future Of Baby Monitoring
'In every diaper there is a fine copper wire...'
Robert Heinlein, Your Personal Electric Helicopter Will Be Ready In 2016
"They were half way home when a single flyer, hopping free in a copter harness, approached the little parade."
WildCat Runs Faster Than You, Untethered
'...moving with such drifting ease that it was like a single solid cloud of black-grey smoke blown at him in silence.' Almost.
HiBot's ACM-R5H Robot Video Shows Graceful Terminator-Style Swimming
'No! No! Aaaaaaarrrrrrgh!'
tDCS Jumpstarts Your Future
'We invented a scanner that can change the labyrinthine neural connections of the brain by tiny electronic impulses...'.
RealView Interactive Live Medical Holography
Surgeons can see an organ in its entirety in a live image.
Britney Spears And Lynn Minmay - Weapons Of Choice
An attack can take many forms.
Aireal Haptics Inching Towards Holodeck Experience
How to feel something that isn't there?
Starchase Pursuit Management ala Star Wars
Yes, but does it follow evil doers through hyperspace?
More SF in the News Stories
More Beyond Technovelgy science news stories