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#helicopter
tikkety-tok4 days ago
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Helicopter crab 馃 馃殎
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fya-art22 days ago
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your honor he is baby
[Image Description:
A detailed digital portrait of Jonnit Kessler from the Campaign Skyjacks Podcast, painted from the chest up. He is a 15-year-old black boy with brown eyes and a black afro mohawk. His head is turned away from the viewer, looking off to the side, and his lips are slightly parted. He wears a turquoise patterned shirt with a ridiculously extravagant collar, opened to show his chest. The repeating pattern depicts a wide-open eye with a yellow iris and red pupil. Around his head and covering his forehead, Jonnit wears the Starwatcher Bandana that was available as a perk through the Worldbuilder鈥檚 2021 Fundraising Drive.
The Starwatcher Bandana is purple with white, yellow, red, turquoise, and orange accents, and has a repeating radial pattern. Motifs on the bandana are: an eye in the corner, a compass on a chain, three skulls, many stars, colorful sky-ships, kusari-gamas in saltire, constellations, and a ship鈥檚 steering wheel.
The background imitates a beige, stained cartoonish pirate map with islands and landmasses, the sailed path marked by an orange dotted line that frames the portrait. Along the path are very simple little doodles of: two skulls and a bone, a sky-ship, a big 鈥榅 marks the spot鈥, a dead smiley face with crosses for eyes, an island with a palm tree, and an anchor. The doodles are placed so they look like landmarks on the map.
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nasa3 months ago
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A dream takes flight! Today, our Ingenuity #MarsHelicopter became the first aircraft in history to make a powered, controlled flight on another planet.
In a video captured by our Perseverance Mars rover, the helicopter is shown hovering above the Red Planet's surface. During this first flight, the helicopter climbed to an altitude of 10 feet (3 meters), hovered, and then touched back down on the surface of Mars.
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More images and video to come...
Join us at 2 p.m. ET (18:00 UTC) for an analysis of Ingenuity鈥檚 first flight and what's to come:
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Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com
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motivationsforlife3 years ago
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Above LV Strip by Colton Kresser
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subject-283 years ago
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Akira (1988) / Sequential Setup (Cels x 7) + Genga / 240mm x 350mm
Crashing helicopter heralds Tetsuo鈥檚 arrival on the scene.
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bmashine2 years ago
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Mi-24 shot down with a 50 caliber rifle
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earthstorya year ago
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neohumanity
Grand Prismatic Spring: The most beautiful and dangerous hot spring in the world. Filmed from a helicopter 馃殎 聽Shot on
@lexarmemory
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one-time-i-dreamt4 months ago
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I was standing on a cliff overlooking the ocean in a lush green field. Suddenly, a helicopter enters my vision. Dangling from the helicopter is a white horse, suspended by rope of some sort. The rope is cut and the horse plummets into the ocean. It disappears beneath the waves and I wake up.
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earthstory3 years ago
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epiclava_A River of molten Lava! #epic#lava#river#kilauea#volcano#bigisland#hawaii#epiclava
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nasa3 years ago
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10 Things: Mars Helicopter
When our next Mars rover lands on the Red Planet in 2021, it will deliver a groundbreaking technology demonstration: the first helicopter to ever fly on a planetary body other than Earth. This Mars Helicopter will demonstrate the first controlled, powered, sustained flight on another world. It could also pave the way for future missions that guide rovers and gather science data and images at locations previously inaccessible on Mars. This exciting new technology could change the way we explore Mars.
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1.聽Its body is small, but its blades are mighty.
One of the biggest engineering challenges is getting the Mars Helicopter鈥檚 blades just right. They need to push enough air downward to receive an upward force that allows for thrust and controlled flight 鈥 a big concern on a planet where the atmosphere is only one percent as dense as Earth鈥檚. 鈥淣o helicopter has flown in those flight conditions 鈥 equivalent to 100,000 feet (30,000 meters) on Earth,鈥 said Bob Balaram, chief engineer for the project at our Jet Propulsion Laboratory.
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2. It has to fly in really thin Martian air.
To compensate for Mars鈥 thin atmosphere, the blades must spin much faster than on an Earth helicopter, and the blade size relative to the weight of the helicopter has to be larger too. The Mars Helicopter鈥檚 rotors measure 4 feet wide (about 1.2 meters) long, tip to tip. At 2,800 rotations per minute, it will spin about 10 times faster than an Earth helicopter. At the same time, the blades shouldn鈥檛 flap around too much, as the helicopter鈥檚 design team discovered during testing. Their solution: make the blades more rigid. 鈥淥ur blades are much stiffer than any terrestrial helicopter鈥檚 would need to be,鈥 Balaram said. 聽 The body, meanwhile, is tiny 鈥 about the size of a softball. In total, the helicopter will weigh just under 4 pounds (1.8 kilograms).
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3.聽It will make up to five flights on Mars.
Over a 30-day period on Mars, the helicopter will attempt up to five flights, each time going farther than the last. The helicopter will fly up to 90 seconds at a time, at heights of up to 10 to 15 feet (3 to 5 meters). Engineers will learn a lot about flying a helicopter on Mars with each flight, since it鈥檚 never been done before!
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4.聽The Mars Helicopter team has already completed groundbreaking tests.
Because a helicopter has never visited Mars before, the Mars Helicopter team has worked hard to figure out how to predict the helicopter鈥檚 performance on the Red Planet. 鈥淲e had to invent how to do planetary helicopter testing on Earth,鈥 said Joe Melko, deputy chief engineer of Mars Helicopter, based at JPL.
The team, led by JPL and including members from JPL, AeroVironment Inc.,聽 Ames Research Center, and Langley Research Center, has designed, built and tested a series of test vehicles.
In 2016, the team flew a full-scale prototype test model of the helicopter in the 25-foot (7.6-meter) space simulator at JPL. The chamber simulated the low pressure of the Martian atmosphere. More recently, in 2018, the team built a fully autonomous helicopter designed to operate on Mars, and successfully flew it in the 25-foot chamber in Mars-like atmospheric density.
Engineers have also exercised the rotors of a test helicopter in a cold chamber to simulate the low temperatures of Mars at night. In addition, they have taken design steps to deal with Mars-like radiation conditions. They have also tested the helicopter鈥檚 landing gear on Mars-like terrain. More tests are coming to see how it performs with Mars-like winds and other conditions.
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5.聽The camera is as good as your cell phone camera.
The helicopter鈥檚 first priority is successfully flying on Mars, so engineering information takes priority. An added bonus is its camera. The Mars Helicopter has the ability to take color photos with a 13-megapixel camera 鈥 the same type commonly found in smart phones today. Engineers will attempt to take plenty of good pictures.
6. It鈥檚 battery-powered, but the battery is rechargeable.
The helicopter requires 360 watts of power for each second it hovers in the Martian atmosphere 鈥 equivalent to the power required by six regular lightbulbs. But it isn鈥檛 out of luck when its lithium-ion batteries run dry. A solar array on the helicopter will recharge the batteries, making it a self-sufficient system as long as there is adequate sunlight. Most of the energy will be used to keep the helicopter warm, since nighttime temperatures on Mars plummet to around minus 130 degrees Fahrenheit (minus 90 Celsius). During daytime flights, temperatures may rise to a much warmer minus 13 to minus 58 degrees Fahrenheit to (minus 25 to minus 50 degrees Celsius) 鈥 still chilly by Earth standards. The solar panel makes an average of 3 watts of power continuously during a 12-hour Martian day.
7.聽The helicopter will be carried to Mars under the belly of the rover.
Somewhere between 60 to 90 Martian days (or sols) after the Mars 2020 rover lands, the helicopter will be deployed from the underside of the rover. Mars Helicopter Delivery System on the rover will rotate the helicopter down from the rover and release it onto the ground. The rover will then drive away to a safe distance.
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8. The helicopter will talk to the rover.
The Mars 2020 rover will act as a telecommunication relay, receiving commands from engineers back on Earth and relaying them to the helicopter. The helicopter will then send images and information about its own performance to the rover, which will send them back to Earth. The rover will also take measurements of wind and atmospheric data to help flight controllers on Earth.
9. It has to fly by itself, with some help.
Radio signals take time to travel to Mars 鈥 between four and 21 minutes, depending on where Earth and Mars are in their orbits 鈥 so instantaneous communication with the helicopter will be impossible. That means flight controllers can鈥檛 use a joystick to fly it in real time, like a video game. Instead, they need to send commands to the helicopter in advance, and the little flying robot will follow through. Autonomous systems will allow the helicopter to look at the ground, analyze the terrain to look how fast it鈥檚 moving, and land on its own.
10. It could pave the way for future missions.
A future Mars helicopter could scout points of interest, help scientists and engineers select new locations and plan driving routes for a rover. Larger standalone helicopters could carry science payloads to investigate multiple sites at Mars. Future helicopters could also be used to fly to places on Mars that rovers cannot reach, such as cliffs or walls of craters. They could even assist with human exploration one day. Says Balaram: "Someday, if we send astronauts, these could be the eyes of the astronauts across Mars.鈥
Read the full version of this week鈥檚 鈥10 Things to Know鈥 article on the web HERE.
Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.
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alpaganimateura year ago
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All my respect and support for the firefighters who put their lives in danger to try to contain the flames. They are the real heroes.聽
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