10 Things: Mars Helicopter
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.
1. Its body is small, but its blades are mighty.
One of the biggest engineering challenges is getting the Mars Helicopter’s blades just right. They need to push enough air downward to receive an upward force that allows for thrust and controlled flight — a big concern on a planet where the atmosphere is only one percent as dense as Earth’s. “No helicopter has flown in those flight conditions – equivalent to 100,000 feet (30,000 meters) on Earth,” said Bob Balaram, chief engineer for the project at our Jet Propulsion Laboratory.
2. It has to fly in really thin Martian air.
To compensate for Mars’ 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’s 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’t flap around too much, as the helicopter’s design team discovered during testing. Their solution: make the blades more rigid. “Our blades are much stiffer than any terrestrial helicopter’s would need to be,” Balaram said. The body, meanwhile, is tiny — about the size of a softball. In total, the helicopter will weigh just under 4 pounds (1.8 kilograms).
3. 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’s never been done before!
4. 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’s performance on the Red Planet. “We had to invent how to do planetary helicopter testing on Earth,” said Joe Melko, deputy chief engineer of Mars Helicopter, based at JPL.
The team, led by JPL and including members from JPL, AeroVironment Inc., 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’s landing gear on Mars-like terrain. More tests are coming to see how it performs with Mars-like winds and other conditions.
5. The camera is as good as your cell phone camera.
The helicopter’s 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 — the same type commonly found in smart phones today. Engineers will attempt to take plenty of good pictures.
6. It’s battery-powered, but the battery is rechargeable.
The helicopter requires 360 watts of power for each second it hovers in the Martian atmosphere – equivalent to the power required by six regular lightbulbs. But it isn’t 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) — still chilly by Earth standards. The solar panel makes an average of 3 watts of power continuously during a 12-hour Martian day.
7. 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.
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 — between four and 21 minutes, depending on where Earth and Mars are in their orbits — so instantaneous communication with the helicopter will be impossible. That means flight controllers can’t 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’s 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.”
Read the full version of this week’s ‘10 Things to Know’ article on the web HERE.
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More Posts from Nasa and Others
World Teacher Appreciation Day!
On #WorldTeachersDay, we are recognizing our two current astronauts who are former classroom teachers, Joe Acaba and Ricky Arnold, as well as honoring teachers everywhere. What better way to celebrate than by learning from teachers who are literally out-of-this-world!
During the past Year of Education on Station, astronauts connected with more than 175,000 students and 40,000 teachers during live Q & A sessions.
Let’s take a look at some of the questions those students asked:
The view from space is supposed to be amazing. Is it really that great and could you explain?
Taking a look at our home planet from the International Space Station is one of the most fascinating things to see! The views and vistas are unforgettable, and you want to take everyone you know to the Cupola (window) to experience this. Want to see what the view is like? Check out earthkam to learn more.
What kind of experiments do you do in space?
There are several experiments that take place on a continuous basis aboard the orbiting laboratory - anything from combustion to life sciences to horticulture. Several organizations around the world have had the opportunity to test their experiments 250 miles off the surface of the Earth.
What is the most overlooked attribute of an astronaut?
If you are a good listener and follower, you can be successful on the space station. As you work with your team, you can rely on each other’s strengths to achieve a common goal. Each astronaut needs to have expeditionary skills to be successful. Check out some of those skills here.
Are you able to grow any plants on the International Space Station?
Nothing excites Serena Auñón-Chancellor more than seeing a living, green plant on the International Space Station. She can’t wait to use some of the lettuce harvest to top her next burger! Learn more about the plants that Serena sees on station here.
What food are you growing on the ISS and which tastes the best?
While aboard the International Space Station, taste buds may not react the same way as they do on earth but the astronauts have access to a variety of snacks and meals. They have also grown 12 variants of lettuce that they have had the opportunity to taste.
Learn more about Joe Acaba, Ricky Arnold, and the Year of Education on Station.
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A Beginner’s Guide to Sustainable Aviation
Do you dream of catching a short flight between cities or journeying across the globe? The aviation industry currently makes up 2-3% of all carbon emissions, but the shift toward electric and hybrid aircraft will help tackle climate change and minimize the environmental impacts of commercial aviation.
Sustainable flight will revolutionize the way we travel. From battery-powered aircraft that reduce fuel consumption, to new lightweight materials that can improve safety and efficiency during flight, here are a few important things to know about the world of sustainable aviation, and what it takes to make air travel cleaner and safer for our planet.
What is Electrified Aircraft Propulsion?
Similar to electric or hybrid-electric cars, sustainable aircraft designs feature electric powertrain systems – the system of components that help propel an aircraft during flight – to help reduce fuel use and emissions. Electrified Aircraft Propulsion (EAP) systems let aircraft work using electric motors, and alternative fuels, rather than relying solely on traditional jet engines burning fossil fuels. At NASA, we’re developing innovative EAP technologies ranging from advanced electric machines designed to increase power and performance to new aircraft materials developed to minimize weight and reduce fuel usage.
What are the challenges with electrifying flight?
Unlike electric vehicles on the ground, electrified aircraft face greater challenges when managing weight and heat while they’re running. In order to ensure maximum efficiency and safety, aircraft components must be designed with minimal weight to help reduce the amount of drag slowing the plane down and causing excess fuel burn. Electrified aircraft must also have advanced thermal management systems to help transfer heat effectively, and ensure onboard systems are kept cool to avoid damage.
Our research and development of EAP technologies offer innovative solutions to these challenges. Designed to keep weight at a minimum, aircraft components such as the High Efficiency Megawatt Motor feature advanced technology that enable increased power and efficiency with three times less heat loss and weight than traditional aircraft motors. New material technologies such as electrical insulation also help transport heat more effectively to minimize heat buildup and are made of lightweight materials to ensure efficiency at high altitudes.
What are the benefits of sustainable aviation?
From an environmental perspective, aircraft electrification offers unique opportunities to lower global emissions and minimize reliance on fossil fuels. The introduction of hybrid- or fully electric aircraft will significantly reduce overall fuel consumption by generating power and thrust via electricity and electric motors. Lightweight EAP systems and components can also help improve aircraft efficiency and reduce fuel burn, while using non-conventional, alternative fuels can help reduce harmful emissions. From an economic standpoint, EAP technologies could help strengthen commercial airliner markets with aircraft designed for around 180 passengers. Green technologies can also benefit both airline companies and you when you fly by potentially reducing aircraft maintenance and in-flight energy costs, making air travel more affordable.
When will sustainable flight take off?
To help turn visions of eco-friendly air travel into reality, we’re teaming up with industry to test EAP technologies on aircraft and introduce them to the U.S. commercial aviation fleet no later than 2035.
Under our Electrified Powertrain Flight Demonstration (EPFD) project, we will conduct ground and flight tests using existing aircraft modified with EAP systems to assist in transitioning these technologies into commercial products. Flight demonstrations will also enable us to identify key risks and barriers associated with integrating new EAP systems into commercial airliners and develop new standards for future EAP aircraft as they take to the skies within the next decade.
There you have it: a quick glimpse into the world of sustainable aviation, and the shift towards keeping our skies cleaner and safer. As we embark on this journey, climb aboard and stay up to date on our latest technology developments and future flight demonstrations.
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This animation blinks between two images of our Mars Phoenix Lander. The first – dark smudges on the planet’s surface. The second – the same Martian terrain nearly a decade later, covered in dust. Our Mars orbiter captured this shot as it surveyed the planet from orbit: the first in 2008. The second: late 2017.
In August 2008, Phoenix completed its three-month mission studying Martian ice, soil and atmosphere. The lander worked for two additional months before reduced sunlight caused energy to become insufficient to keep the lander functioning. The solar-powered robot was not designed to survive through the dark and cold conditions of a Martian arctic winter.
Read the full story HERE.
Credit: NASA/JPL-Caltech/Univ. of Arizona
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Greenland Refrozen
It won’t be until summertime that a significant amount of melt shows up across the Greenland Ice Sheet. For now, most indications of meltwater ponds and lakes are leftovers from past seasons that have since refrozen.
These photographs were snapped during research flights for NASA’s Operation IceBridge—now in its final year after a decade of airborne missions to map polar ice.
This second image was acquired on April 18, 2019, with the Continuous Airborne Mapping by Optical Translator (CAMBOT) system. The system takes downward-looking images throughout a flight, which can later be used by scientists to interpret other data. This image shows part of a large, frozen lake on Storstrømmen Glacier. This lake also thaws in summertime, which is why it shows up as blue ice.
Lakes atop a glacier, or “supraglacial lakes,” are somewhat stable in terms of their location, according to Joe MacGregor, NASA project scientist for Operation IceBridge. The lake on Storstrømmen is visible in satellite data at least as far back as May 2012. On occasion, water in lakes like this can drain away through a vertical shaft known as a “moulin.” Scientists initially wondered if the dark circular area on the right side of this image could be a moulin, but closer inspection suggested it is just a deeper part of the lake.
See more photos of the frozen lakes in Greenland: https://earthobservatory.nasa.gov/images/144965/greenland-refrozen
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A Journey of Eight Years
We’re taking time to highlight our progress and accomplishments over the past 8 years. Join our historical journey!
Obama Visit to NASA in 2010
President Barack Obama visited our Kennedy Space Center in Florida to deliver remarks on the bold new course the administration is charting for America’s space program. During a speech at the center, President Obama said, “I believe we can send humans to orbit Mars and return them safely to Earth. And a landing on Mars will follow. And I expect to be around to see it.” R
Commercial Crew
Our Commercial Crew and Cargo Program is investing financial and technical resources to stimulate efforts within the private sector to develop safe, reliable and cost-effective space transportation systems. This program has allowed us to continue to reach low-Earth orbit, even after the retirement of the Space Shuttle Program. In the coming years, we will once again launch U.S. astronauts from American soil to the International Space Station through this commercial partnership.
Revamping KSC: Vehicle Assembly Building
Our Vehicle Assembly Building (VAB) at Kennedy Space Center served through the Apollo and Space Shuttle Programs, and is now undergoing renovations to accommodate future launch vehicles…like our Space Launch System (SLS) rocket that will carry astronauts to deep space destinations, like Mars. Already, shuttle-era work platforms have been removed from the VAB to make way for our advanced heavy-lift launch vehicle, SLS.
Revamping KSC: Pad 39B
For the first time since our Apollo-era rockets and space shuttles lifted off on missions from Launch Complex 39 at our Kennedy Space Center in Florida, one of the launch pads is undergoing extensive upgrades to support our 21st century space launch complex. At launch pad B, workers are making upgrades to support our Space Launch System (SLS) rocket and a variety of other commercial launch vehicles. .
Commercial Resupply Program
Our commercial partnerships with companies like SpaceX and Orbital ATK are allowing us to find new ways to resupply the International Space Station. Orbital ATK’s Cygnus cargo spacecraft is shown being captured using the Station’s Canadarm2 robotic arm. Packed with more than 5,100 pounds of cargo and research equipment, the vehicle made Orbital ATK's fifth commercial resupply flight to the station in October 2016.
Pluto Flyby
After a seven-year journey, our New Horizons spacecraft arrived at dwarf planet Pluto. It captured this high-resolution enhanced color view of the planet on July 14, 2015. The image combines blue, red and infrared images taken by the craft’s imaging camera. Pluto’s surface sports a remarkable range of subtle colors, enhanced in this view to a rainbow of pale blues, yellows, oranges, and deep reds. Many land forms have their own distinct colors, which tell a complex geological and climatological story.
Juno at Jupiter
Juno’s 2011 launch brought it into orbit around Jupiter. This composite image depicts Jupiter’s cloud formations as seen through the eyes of Juno’s Microwave Radiometer (MWR) instrument as compared to the top layer, a Cassini Imaging Science Subsystem image of the planet. The MWR can see several hundred miles (kilometers) into Jupiter’s atmosphere with its largest antenna. The belts and bands visible on the surface are also visible in modified form in each layer below.
Orion EFT-1
As we strived to make deep-space missions a reality, on Dec. 5, 2014, a Delta IV Heavy rocket lifted off from Cape Canaveral carrying our Orion spacecraft on an unpiloted flight test to Earth orbit. During the two-orbit, four-and-a-half hour mission, engineers evaluated the systems critical to crew safety, the launch abort system, the heat shield and the parachute system.
Building of SLS
Meet the Space Launch System, our latest rocket system and see how it stacks up (no pun intended) to earlier generations of launch vehicles. While we engaged commercial partners to help us reach low-Earth orbit, we also were able to focus on deep-space exploration. This resulted in the creation of SLS, the world’s most powerful rocket and the one that will carry humans to deep-space destinations, like Mars.
Small Satellite Technology
Our latest generation of small satellite technology represents a new way of advancing scientific research and reducing costs. These small sats are part of a technology demonstration that were deployed from the International Space Station in December 2016.
Technology Development Organization
In 2013, we created a standalone technology development organization at NASA. Why? This new organization was an outgrowth of President Obama’s recognition of the critical role that space technology and innovation will play in enabling both future space missions and bettering life on Earth. The President’s most recent budget request included $4 million per year for our Centennial Challenges prizes. This program seeks innovations from diverse and non-traditional sources and competitors are not supported by government funding. Awards are only made to successful teams when the challenges are met. Throughout this administration (2009 – 2016), more than $6.5 million has been awarded to winners.
Spinoffs
Did you know that many technologies originally designed for space exploration are now being used by the general public? Yes, there’s space in your life! We have a long history of transferring technology to the private sector, things we like to call NASA Spinoffs. From enriched baby formula, to digital camera sensors…you may be surprised where this technology came from.
Space Station Extended to 2024
In 2014, the Obama Administration announced that the United States would support the extension of the International Space Station to at least 2024. This gave the station a decade to continue its already fruitful microgravity research mission. This offered scientists and engineers the time they need to ensure the future of exploration, scientific discoveries and economic development.
Year in Space Mission
Former NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko spent a year in space to help us understand the impacts of long-duration spaceflight on the human body. The studies performed throughout their stay will yield beneficial knowledge on the medical, psychological and biomedical challenges faced by astronauts that will one day travel to Mars. Scott Kelly was a particularly interesting candidate for the job, as he has a twin brother. While Scott spent a year on the International Space Station, his brother Mark spent the year on Earth. Comparing test results from both subjects will provide an even deeper understanding of the human body and how it reacts to the space environment.
EPIC Earth Images
From one MILLION miles away, our EPIC camera on the Deep Space Climate Observatory (DSCOVR) satellite returned its first view of the entire sunlit side of Earth in 2015. Because of this spacecraft, you can now see a daily series of images of our home planet! These images are available 12 to 36 hours after they are acquired.
James Webb Space Telescope
The James Webb Space Telescope represents a giant leap forward in our quest to understand the universe and our origins. The successor to the Hubble Space Telescope, JWST is designed to examine every phase of cosmic history: from the first luminous glows after the Big Bang to the formation of galaxies, stars, and planets to the evolution of our own solar system. More:
Green Aviation
Our commitment to advancing aeronautics has led to developments in today’s aviation that have made air travel safer than ever. In fact, every U.S. aircraft flying today and every U.S. air traffic control tower uses NASA-developed technology in some way. Streamlined aircraft bodies, quieter jet engines, techniques for preventing icing, drag-reducing winglets, lightweight composite structures, software tools to improve the flow of tens of thousands of aircraft through the sky, and so much more are an everyday part of flying thanks to our research that traces its origins back to the earliest days of aviation. Our green aviation technologies are dramatically reducing the environmental impact of aviation and improving its efficiency while maintaining safety in more crowded skies, and paving the way for revolutionary aircraft shapes and propulsion.
X-Planes
History is about to repeat itself as the Quiet Supersonic Technology, or QueSST, concept begins its design phase to become one of the newest generation of X-planes. Over the past seven decades, our nation’s best minds in aviation designed, built and flew a series of experimental airplanes to test the latest fanciful and practical ideas related to flight. Known as X-planes, we are again are preparing to put in the sky an array of new experimental aircraft, each intended to carry on the legacy of demonstrating advanced technologies that will push back the frontiers of aviation.
Drones
Blazing the trail for safely integrating drones into the national airspace, we have been testing and researching uncrewed aircraft. The most recent “out of sight” tests are helping us solve the challenge of drones flying beyond the visual line of sight of their human operators without endangering other aircraft.
Solar Dynamics Observatory
Our Solar Dynamics Observatory, which launched in 2010, observes the sun in unparalleled detail and is yet another mission designed to understand the space in which we live. In this image, the sun, our system’s only star seems to be sending us a message. A pair of giant filaments on the face of the sun form what appears to be an enormous arrow pointing to the right. If straightened out, each filament would be about as long as the sun’s diameter—1 million miles long. Such filaments are cooler clouds of solar material suspended above the sun's surface by powerful magnetic forces. Filaments can float for days without much change, though they can also erupt, releasing solar material in a shower that either rains back down or escapes out into space, becoming a moving cloud known as a coronal mass ejection, or CME.
Curiosity Launch and Landing
There are selfies and there are selfies—from a world more than 33 million miles away. When the Curiosity Rover launched on Nov. 6, 2011, to begin a 10-month journey to the Red Planet, who knew it would be so photogenic. Not only has Curiosity sent back beauty shots of itself, its imagery has increased our knowledge of Mars manyfold. But it’s not just a camera; onboard are an array of scientific instruments designed to analyze the Red Planet’s soil, rocks and chemical composition.
Astronaut Applications
On Dec. 14, 2015, we announced that astronaut applications were open on USAJOBS. The window for applications closed on Feb. 18 with a record turnout! We received more than 18,300 applications from excited individuals from around the country, all hoping to join the 2017 astronaut class. This surpassed the more than 6,100 received in 2012, and the previous record of 8,000 applicants in 1978.
OSIRIS-REx
Asteroids are a part of our solar system and in our quest to learn more about their origins, we sent the OSIRIS-Rex, the Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer, to rendezvous with comet Bennu and return a sample of the comet to scientists here on Earth. Along the way, the mission will be multitasking during its two-year outbound cruise to search for elusive “Trojan” asteroids. Trojans are asteroids that are constant companions to planets in our solar system as they orbit the sun, remaining near a stable point 60 degrees in front of or behind the planet.
Habitable Zone Planets
In December 1995, the first exoplanet (a planet outside our solar system) was found. Since then, our Kepler mission has surveyed the Milky Way to verify 2,000+ exoplanets. On July 23, 2015, the Kepler mission confirmed the discovery of the first Earth-sized planet in the habitable zone. Not only that, but the planet orbits a sun very much like our own.
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solivanas: I’ve been designing a space habitat for school that rotates to provide gravity for astronauts within it. Any tips?
Flying to New Heights With the Magnetospheric Multiscale Mission
A mission studying Earth’s magnetic field by flying four identical spacecraft is headed into new territory.
The Magnetospheric Multiscale mission, or MMS, has been studying the magnetic field on the side of Earth facing the sun, the day side – but now we’re focusing on something else. On February 9, MMS started the three-month-long process of shifting to a new orbit.
One key thing MMS studies is magnetic reconnection – a process that occurs when magnetic fields collide and re-align explosively into new positions. The new orbit will allow MMS to study reconnection on the night side of the Earth, farther from the sun.
Magnetic reconnection on the night side of Earth is thought to be responsible for causing the northern and southern lights.
To study the interesting regions of Earth’s magnetic field on the night side, the four MMS spacecraft are being boosted into an orbit that takes them farther from Earth than ever before. Once it reaches its final orbit, MMS will shatter its previous Guinness World Record for highest altitude fix of a GPS.
To save on fuel, the orbit is slowly adjusted over many weeks. The boost to take each spacecraft to its final orbit will happen during the first week of April.
On April 19, each spacecraft will be boosted again to raise its closest approach to Earth, called perigee. Without this step, the spacecraft would be way too close for comfort -- and would actually reenter Earth’s atmosphere next winter!
The four MMS spacecraft usually fly really close together – only four miles between them – in a special pyramid formation called a tetrahedral, which allows us to examine the magnetic environment in three dimensions.
But during orbit adjustments, the pyramid shape is broken up to make sure the spacecraft have plenty of room to maneuver. Once MMS reaches its new orbit in May, the spacecraft will be realigned into their tetrahedral formation and ready to do more 3D magnetic science.
Learn more about MMS and find out what it’s like to fly a spacecraft.
Home is Where the Astronaut Is…
The International Space Station serves as a home, office and recreation room for astronauts. They share this confined space far above the Earth with crew members from different countries and cultures for as long as six months or more. At the same time, maintaining individual well-being and crew harmony is important for the crew and mission success.
The Culture, Values and Environmental Adaptation in Space (At Home in Space) Investigation, looks at changes in perceptions about home in space and the ways a unique culture may develop aboard the station during a mission. Discover more about this study HERE.
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What's next for NASA? In 2019, we’re once again preparing for human missions to the Moon. We're keeping the promise by developing new systems and spacecraft, making innovations in flight and technology, living and doing science on the International Space Station, and delivering images and discoveries from our home planet, our solar system and beyond.
Check out What’s Next for NASA: https://www.nasa.gov/next
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What’s your favorite part of the job?
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