Science Fiction
Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 |
Orion's 'Skip-to-M'Lou' Entry
A few weeks ago, when NASA's Orion returned to Earth, engineers made use of a guidance and control maneuver called a skip-entry – the first time a skip entry maneuver has been attempted for a human spacecraft.
While it’s not a perfect analogy, Orion will mimic a stone skipping across a pond by dipping into the Earth’s atmosphere, skipping out, then re-entering. Performed by the crew module, this maneuver gives Orion more space to travel before splashing down, allowing it to be more precise with where it lands.“Skip entry gives us a consistent landing site that supports astronaut safety because it allows teams on the ground to better and faster coordinate recovery efforts,” said Joe Bomba, Lockheed Martin’s Orion Aerosciences Aerothermal Lead.
(Phases of Skip Reentry)
The first time I'd ever heard of this idea was in science fiction writer Robert Heinlein's classic Methuselah's Children, first serialized in Astounding Science Fiction in 1941. Heinlein expanded the three-part story into a full-length novel in 1958, which provides the quote used below.
In the story, the Howard Families are attempting to escape the Solar System in a vast generation ship, the New Frontiers. They are aided in their efforts by Slayton Ford, the chief executive of Earth's government. Ford is forced to go with them, joining them in orbit:
One figure emerged. Lazarus saw that it was Ford, pressed the switch again to close the port, kicked the blind latch into place, while never taking his blaster off his visitor. “Now what the hell?” he demanded. “What are you doing here? And who else is here? Patrol?”“I’m alone.”
“Huh?”
“I want to go with you . . . if you’ll have me.”
Lazarus looked at him and did not answer. Then he went back to the bull’s-eye and inspected all that he could see. Ford appeared to be telling the truth, for no one else was in sight. But that was not what held Lazarus’ eye.
Why the ship wasn’t a proper deep-space craft at all. It did not have an air1ock but merely a seal to let it fasten to a larger ship; Lazarus was staring right into the body of the craft. It looked like-yes, it was a “Joy-boat Junior,” a little private strato-yacht, suitable only for point-to-point trajectory, or at the most for rendezvous with a satellite provided the satellite could refuel it for the return leg.
There was no fuel for it here. A lightning pilot possibly could land that tin toy without power and still walk away from it provided he had the skill to play Skip-to-M’Lou in and out of the atmosphere while nursing his skin temperatures-but Lazarus wouldn’t want to try it. No, sir! He turned to Ford. “Suppose we turned you down. How did you figure on getting back?”
“I didn’t figure on it,” Ford answered simply.
Heinlein didn't originate the idea. The skip-glide concept was originated in the WWII era as a way to extend the range of bombers and missiles; the technique was used by the Soviet Zond series of circumlunar spacecraft (1964-70), which used one skip before landing. In this case a true skip was required in order to allow the spacecraft to reach the higher-latitude landing areas. Zond 6, Zond 7 and Zond 8 made successful skip entries.
Update 15-Jan-2023: Fans of Raymond Z. Gallun will not be surprised to find that he had included this idea in his wonderful 1961 story The Planet Strappers - see the entry for skip-glide. End update.
Scroll down for more stories in the same category. (Story submitted 1/1/2023)
Follow this kind of news @Technovelgy.| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
Would
you like to contribute a story tip?
It's easy:
Get the URL of the story, and the related sf author, and add
it here.
Comment/Join discussion ( 0 )
Related News Stories - (" Space Tech ")
'If Anyone Is Watching Earth...'
'Our study of your race has convinced us that you are not fitted to leave your planet in the present state of your civilization.' - Arthur C. Clarke, 1946.
Cloud Of Space Rubbish From China's Long March Rocket
'Within seconds the material was spread out over fifty yards, in a matter of hours it might occupy several cubic miles of space...'
ESA's Draco To Study Heat Of Reentry
'...a synthetic which air-friction would erode.' - EE Doc Smith, 1934.
The United States Space Academy Is Official
'Is our orbit to Space Academy clear?' - Carey Rockwell
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.
Science Fiction
Timeline
1600-1899
1900-1939
1940's 1950's
1960's 1970's
1980's 1990's
2000's 2010's
Current News
'If Anyone Is Watching Earth...'
'Our study of your race has convinced us that you are not fitted to leave your planet in the present state of your civilization.'
Epirus High-Power Microwave Defeats Drones
'...the spreading beam of the deranging ray struck them, and Then one toppled and fell. Then another.'
Cloud Of Space Rubbish From China's Long March Rocket
'Within seconds the material was spread out over fifty yards, in a matter of hours it might occupy several cubic miles of space...'
Biomimetic Tendons From Rochu Robotics
'... the curious parallelism to animal motions.'
Living Human Neuron Biological Compute Rack
'The men are dead, but their acquired wisdom lives on and I am the beneficiary.'
Martha Stewart Approves Ojai 'Living Room On Wheels'
'Young people found the driverless car admirable for petting.'
ESA's Draco To Study Heat Of Reentry
'...a synthetic which air-friction would erode.'
Buy A Galaxy? Maybe Start Smaller
'The sky is the limit' just got higher.
The United States Space Academy Is Official
'Is our orbit to Space Academy clear?'
Is There A Global Problem With Who Is Having Children?
'After twenty generations of shillyshallying...'
You Will Eat The Cookies Made From Plastic...
'Our planes are going to start bringing in bales of discarded plastics...'
It's A Giant Robot! You Reporters Have Been Warned!
'... completely forgetting the ship at sight of the awesome figure and great head of the giant Gaut...'
Birds Learn To Sing Pictures ala Frank Herbert's Distrans
'We will fight in the time of fighting.'
ElectionSim: China's 'Ender's Game' Battle Sim, Or Lem's 'Kingdom In A Box'?
'So, Ender, we will now begin your education.'
Tactile Skin Supplier Map
'What strange sensitivity! What an amazing development of science was manifested in every move and act and word of this Robot!'
Flock Stymied By 'Adversarial Fashion'
'Forget the head atop it, the legs below, feet, arms, hands. It compels erasure.'
