3 For Mars

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Re: 3 For Mars

#41 Post by PHXPhlyer » Sun Apr 11, 2021 12:07 am

Ingenuity helicopter's first flight on Mars delayed

https://www.cnn.com/2021/04/10/world/ma ... index.html

Ingenuity helicopter's first flight on Mars delayed
By Ashley Strickland, CNN

Updated 7:17 PM ET, Sat April 10, 2021
(CNN)We'll have to wait a little bit longer before the first powered, controlled flight occurs on another planet. NASA's Ingenuity helicopter, originally scheduled to fly on Mars Sunday, is now set to take off no earlier than April 14, according to the agency.

The helicopter returned data to mission teams on Earth late Friday evening that caused NASA to reschedule the first flight. The team reports that the helicopter remains safe and healthy and is sharing all of its data.
Ingenuity conducted a high-speed test of its rotors Friday. During this test, the command sequence ended early due to a watchdog timer that expired.
This early end of the test happened when the helicopter was trying to shift the flight computer from preflight into flight mode.
The timer monitors the command sequence, and if any issues arise, it alerts the system and maintains the helicopter's safety by shutting down until the issue can be resolved.
In this case, the timer did exactly what it was supposed to do, according to the agency.
Meanwhile, the helicopter's team on Earth is reviewing the data so they can determine the issue that shut down the test. After this review, the high-speed test of the helicopter's rotors will be rescheduled.

When Ingenuity is able to fly on Mars for the first time, the 4-pound helicopter will fly for about 40 seconds total. The helicopter will spin up its two 4-foot blades, rise up 10 feet (3 meters) in the air, hover, make a turn, take a photo, and touch back down on Mars.
If this first flight is successful, Ingenuity could fly up to four more times this month.
The little helicopter has checked off multiple milestones so far, like wiggling its blades and surviving the freezing cold nights on Mars.

Now, it needs to autonomously fly through the thin Martian atmosphere, with no help from its teams on Earth. Radio signals take 15 minutes and 27 seconds to cross the current gap between Earth and Mars, which spans 173 million miles (278.4 million kilometers).
The Perseverance rover, which helps the helicopter and its mission team on Earth communicate with each other, will receive the flight instructions from NASA's Jet Propulsion Laboratory in Pasadena, California. The rover will then send those plans on to the helicopter. Perseverance will be parked at an overlook 215 feet (65 meters) away from the helicopter so it can safely watch the flight and capture images and video.

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Re: 3 For Mars

#42 Post by TheGreenGoblin » Sun Apr 11, 2021 4:15 am

Is this because Ingenuity is not ugly enough to be repelled by Mars, which is the basis for all helicopter flight in the known Universe? :)

Ah well, let's hope there is not some intractable problem. This issue may be software based which will mean up linking a code fix which can take some time.

From Space.Com
“We are going to be taking a very conservative flight to really nail the first flight,” said MiMi Aung, project manager for Ingenuity at JPL. “After that, we’ll be taking bolder and bolder flights. We’ll be going higher and further.”

The mission has five flights planned over a 30-day period. After each flight engineers will review telemetry from Ingenuity, as well as images from both the helicopter itself and from Perseverance. That process will take a couple of days given the volume of data, particularly snippets of video that project officials hope will show Ingenuity in flight. “We are just taking all the downlink we can get from all the orbiters so we can get back as much as possible,” said Elsa Jensen, the uplink operations lead for the Mastcam-Z camera on Perseverance, which will observe the flight.

If the first flight is a success, Aung said they expect to perform the second flight in four days. That will decrease to a three-day cadence for subsequent flights. Those later flights will include going to altitudes of up to five meters and going 50 meters downrange and back.

“Once we get to the fourth and fifth flights, we’ll have fun,” she said. “We really want to push our vehicle to the limit. It’s not every day you get to test a rotorcraft and do an experiment on Mars. After the third flight, we’re going to be very adventurous.”

By that fifth flight, she said the mission will take more risks with the vehicle with a greater probability that the vehicle will not survive. That’s to maximize the value of this technology demonstration, but also reflects that Ingenuity has a fixed 30-day period to conduct those tests before the main Perseverance mission has to proceed. Ingenuity relies on Perseverance as a data relay and cannot operate without it.

“Even if it survives, we are going to turn back the keys to the rover team,” she said. “Ken Farley, the project scientist for Perseverance, has been so generous. He gave us 30 invaluable days on Mars, and then Perseverance really must go on to the primary mission it is on.”

During development of Ingenuity, engineers tested it in conditions simulating the reduced gravity and tenuous atmosphere of Mars. Up until the issue before its final pre-flight test, the vehicle had been operating well, deploying itself from the underside of Perseverance and then charging its batteries using a small solar panel and briefly testing its rotors at low speed.

Aung said that gave her confidence in the chances of success on that first flight. “The only uncertainty remains the actual environment of Mars,” she said, in particular winds that have been averaging about six meters per second. She noted, though, that Ingenuity was tested on Earth in winds up to 11 meters per second, and simulations show the helicopter’s control system can handle winds approaching 30 meters per second.
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Re: 3 For Mars

#43 Post by Boac » Sun Apr 11, 2021 7:51 am

I hope they de-ice it properly.

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Re: 3 For Mars

#44 Post by TheGreenGoblin » Sun Apr 11, 2021 10:21 am

Boac wrote:
Sun Apr 11, 2021 7:51 am
I hope they de-ice it properly.
Frozen carbon dioxide? Most of the power that the helicopter has its disposal is used to keep the electrics, batteries and rotor hub warm (in the case of the blades mostly to ensure that the lubricant, used to ensure smooth running at 2400 RPM, does not congeal or freeze). I must check to see if they have considered blade icing a high risk or an issue.

I know, I am a sad git (and your tongue was in your cheek), but it is Sunday and they have postponed the flight! =))
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Re: 3 For Mars

#45 Post by TheGreenGoblin » Sun Apr 11, 2021 12:48 pm

Ok so here it is, the first Mars weather report that I have ever looked at. I pray that I will not have to post a METAR next week, which will imply that Ingenuity has crashed.

https://mars.nasa.gov/news/8909/nasas-f ... r-on-mars/
showed a temperature high of minus 7.6 degrees Fahrenheit (minus 22 degrees Celsius) and low of minus 117.4 degrees Fahrenheit (minus 83 degrees Celsius) in Jezero Crater.
Given the low atmospheric density on Mars, CO2 freezes at around minus 120 degrees Celsius as opposed to the minus 78.5 degrees Celsius on earth (at sea level) so one can safely say that at the moment CO2 rotor blade icing is unlikely in the Jezero crater! Night flying would imply a greater risk but, still, a relatively low one.

But you knew that anyway Boac! :)

https://mars.nasa.gov/resources/where-o ... orm-often/

Apparently it was a "spin test" that failed, necessitating the delay...
NASA has delayed the first flight of its Ingenuity Mars helicopter after a crucial test-spin of the drone's rotor blades abruptly stopped.

This was the last major test to make sure the helicopter would be ready for its first flight, which was originally scheduled for early Monday. Now NASA has delayed the historic liftoff - which would mark the first powered, controlled flight on another planet - to Wednesday.

For the test on Friday, Ingenuity was supposed to spin its blades at full speed while on the ground. The two pairs of blades should have spun in opposite directions at more than 2,500 rotations per minute - about eight times faster than an Earth helicopter. On flight day, they'll need that speed to lift the 4-pound drone into the thin Martian atmosphere. That air has just 1% the density of Earth's atmosphere, making Ingenuity's task the equivalent of flying three times higher than the peak of Mount Everest.

But that test spin was abruptly halted when a "watchdog" timer expired, NASA announced on Saturday. This timer ended the command sequence that was instructing Ingenuity to conduct each step of the test. The stop happened as the command sequence was trying to transition the helicopter's flight computer from "pre-flight" to "flight" mode.

"The watchdog timer oversees the command sequence and alerts the system to any potential issues. It helps the system stay safe by not proceeding if an issue is observed and worked as planned," NASA's announcement said.

It's not yet clear what the issue was, but NASA said the helicopter is "safe and healthy" and fully communicating with mission controllers on Earth. The agency's helicopter team is reviewing data from the test to diagnose the issue. NASA will have to reattempt the full-speed spin before Ingenuity can fly.
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Re: 3 For Mars

#46 Post by TheGreenGoblin » Sun Apr 11, 2021 12:56 pm

A bit more on the Martian climate. Most interesting.

https://en.wikipedia.org/wiki/Climate_o ... emperature

Ice_Clouds_in_Martian_Arctic.gif
Ice_Clouds_in_Martian_Arctic.gif (303.83 KiB) Viewed 730 times
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Re: 3 For Mars

#47 Post by Boac » Sun Apr 11, 2021 3:38 pm

What is the ICAO code for Ingenuity base? Will FR24 track it? Will the first pub on Mars be called ..................

So many questions.

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Re: 3 For Mars

#48 Post by PHXPhlyer » Sun Apr 11, 2021 3:59 pm

Interplanetary Civil Aviation Organization
FTFY :ymdevil:

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Re: 3 For Mars

#49 Post by ian16th » Mon Apr 12, 2021 11:21 am

Boac wrote:
Sun Apr 11, 2021 3:38 pm
What is the ICAO code for Ingenuity base? Will FR24 track it? Will the first pub on Mars be called ..................

So many questions.
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Re: 3 For Mars

#50 Post by Boac » Mon Apr 12, 2021 12:14 pm

Not 'The Mars Bar'?

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Re: 3 For Mars

#51 Post by TheGreenGoblin » Mon Apr 12, 2021 12:20 pm

The Mekon Bar and Dance Club featuring the three breasted belle of Olympus Mons!

It is rumoured that that lady will set up her own pub called The 3 for Mars.
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Re: 3 For Mars

#52 Post by ian16th » Mon Apr 12, 2021 12:56 pm

2nd choice; 'The Little Green Man'.
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Re: 3 For Mars

#53 Post by PHXPhlyer » Tue Apr 13, 2021 5:21 pm

There's a fix for what ails the Mars helicopter's software

https://www.azfamily.com/news/us_world_ ... _id=997200

There's a fix for what ails the Mars helicopter's software
BY ASHLEY STRICKLAND, CNN
UPDATED 1 HR AGO | POSTED ON APR 13, 2021
There's a fix for what ails the Mars helicopter's software

(CNN) -- The first flight of the Ingenuity helicopter on Mars is still delayed, but the mission's team is working on a solution to make it possible.

The helicopter returned data to mission teams on Earth late Friday evening that caused NASA to reschedule the first flight. Ingenuity conducted a high-speed test of its rotors Friday, but the command sequence ended early due to a watchdog timer that expired.

This early end of the test happened when the helicopter was trying to shift the flight computer from preflight into flight mode.

The helicopter remains healthy and is sending back all of its data. Over the weekend, the Ingenuity team tested a multitude of solutions. They determined that modifying and reinstalling the helicopter's flight control software is the best way to fix the issue.

The software fix will change the way the helicopter's two flight controllers start up. This should ease the transition from preflight to flight for both the hardware and software.

The Ingenuity team is reviewing these software modifications and using testbeds to validate them at NASA's Jet Propulsion Laboratory in Pasadena, California, which manages the mission.

Multiple steps need to happen now to ensure this update goes through ahead of Ingenuity's first flight.

Once the software solution is developed and has been tested and approved, then it needs to be loaded to the Perseverance rover, which acts as a base station for Ingenuity. The helicopter will then boot up the new software.

Then, the high-speed test of the rotors will need to be rescheduled, as well as the first flight.

All of these steps will take time, according to the mission team.

"Our best estimate of a targeted flight date is fluid right now, but we are working toward achieving these milestones and will set a flight date next week," according to an update from NASA. "We are confident in the team's ability to work through this challenge and prepare for Ingenuity's historic first controlled powered flight on another planet."

Fortunately, Ingenuity's power, thermal control and communications are still functioning normally.

The helicopter is a technology demonstration, meaning that it's an experiment to test out concepts, so these challenges are expected, NASA officials said. It also means the Ingenuity team is being deliberate with each step leading up to the first powered, controlled flight on another planet.

Meanwhile, the Perseverance rover is observing its surroundings, taking new images and preparing a test of its MOXIE instrument -- which is also a technology demonstration.

MOXIE, or the Mars Oxygen In-Situ Resource Utilization Experiment, will convert Mars' plentiful carbon dioxide into oxygen.

The small MOXIE experiment will switch on and convert carbon dioxide into oxygen for a couple of hours every month or two of the mission, using about a day's worth of energy on the rover. It will only produce about 10 grams of oxygen an hour -- enough for half of an average size adult.

The MOXIE team will apply lessons learned for developing a larger and more powerful system for a manned mission. Astronauts could one day use this oxygen on Mars for life support systems as well as generating fuel.

When Ingenuity is able to fly on Mars for the first time, the 4-pound helicopter will fly for about 40 seconds total. The helicopter will spin up its two 4-foot blades, rise up 10 feet (3 meters) in the air, hover, make a turn, take a photo, and touch back down on Mars.

If this first flight is successful, Ingenuity could fly up to four more times in the weeks after.

The little helicopter has checked off multiple milestones so far, like wiggling its blades and surviving the freezing cold nights on Mars.

Now, it needs to autonomously fly through the thin Martian atmosphere, with no help from its teams on Earth. Radio signals take 15 minutes and 27 seconds to cross the current gap between Earth and Mars, which spans 173 million miles (278.4 million kilometers).

Perseverance will be parked at an overlook 215 feet (65 meters) away from the helicopter so it can safely watch the flight and capture images and videos.

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Re: 3 For Mars

#54 Post by TheGreenGoblin » Tue Apr 13, 2021 5:31 pm

TheGreenGoblin wrote:
Sun Apr 11, 2021 4:15 am

Ah well, let's hope there is not some intractable problem. This issue may be software based which will mean up linking a code fix which can take some time.

Ah software uber alles! ;)))

I don't see them flying tomorrow!
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Re: 3 For Mars

#55 Post by PHXPhlyer » Tue Apr 13, 2021 5:56 pm

Not just software.
What about the TAF?

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Re: 3 For Mars

#56 Post by TheGreenGoblin » Tue Apr 13, 2021 6:05 pm

PHXPhlyer wrote:
Tue Apr 13, 2021 5:56 pm
Not just software.
What about the TAF?

PP

Without the TAF? The recklessness of these people knows no bounds! ;)))
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3 For Mars+1 more?

#57 Post by TheGreenGoblin » Sun Apr 18, 2021 2:20 am

Though you remain
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Your destination remains
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Re: 3 For Mars

#58 Post by PHXPhlyer » Sun Apr 18, 2021 2:34 am

Mars helicopter's first flight could happen on Monday

https://www.cnn.com/2021/04/17/world/ma ... index.html

Mars helicopter's first flight could happen on Monday

(CNN)The Ingenuity helicopter is preparing for its historic flight on Mars Monday if everything goes according to plan. The first powered, controlled flight on another planet will take place at 3:30 a.m. ET on April 19, according to NASA.

Unlike when the helicopter's fellow traveler, the Perseverance rover, landed on Mars on February 18, we won't be able to see images or know if it was successful right away.
The helicopter team will be in mission control at NASA's Jet Propulsion Laboratory in Pasadena, California, early Monday morning to receive and analyze the first data from Ingenuity's flight attempt.
Live coverage will be available on NASA's site Monday morning beginning at 6:15 a.m. ET, and a postflight briefing is scheduled for 2 p.m. ET Monday afternoon.
The Ingenuity helicopter has unlocked and spun its blades in preparation for flight.

The flight was originally scheduled for April 11 but shifted after a command-sequence issue was discovered when the helicopter went through a system of preflight checks with its software.
Ingenuity conducted a high-speed test of its rotors on April 10, but the command sequence ended early due to a watchdog timer that expired. This early end of the test happened when the helicopter was trying to shift the flight computer from preflight into flight mode.
The helicopter team determined a software fix that will change the way the helicopter's two flight controllers start up. This should ease the transition from preflight to flight for both the hardware and software.
The helicopter team received data on April 16 showing that the helicopter successfully completed its rapid spin test.
Now, the chopper needs to autonomously fly through the thin Martian atmosphere, with no help from its teams on Earth.
First flight
Ingenuity, which is a technology demonstration, will fly for about 40 seconds total on Monday. The 4-pound helicopter will spin up its two 4-foot blades, rise up 10 feet (3 meters) in the air, hover, make a turn, take a photo, and touch back down on Mars.
If this first flight is successful, Ingenuity could fly up to four more times over the coming weeks.
The little helicopter has checked off multiple milestones so far, like wiggling its blades and surviving the freezing cold nights on Mars.

Radio signals take 15 minutes and 27 seconds to cross the current gap between Earth and Mars, which spans 173 million miles (278.4 million kilometers).
"Mars is hard not only when you land, but when you try to take off from it and fly around, too," said MiMi Aung, Ingenuity project manager at JPL, in a statement. "It has significantly less gravity, but less than 1% the pressure of our atmosphere at its surface. Put those things together, and you have a vehicle that demands every input be right."
Capturing first flight
The Perseverance rover, which helps the helicopter and its mission team on Earth communicate with each other, will receive the flight instructions from JPL. The rover will then send those plans on to the helicopter. Perseverance will be parked at an overlook 215 feet (65 meters) away from the helicopter so it can safely watch the flight and capture images and videos.

After some initial tests of the blades before flight, Ingenuity will spin up the rotors and conduct its flight. The preflight tests will allow the helicopter to configure the pitch of the blades to help it lift up.
"It should take us about six seconds to climb to our maximum height for this first flight," said Håvard Grip, flight control lead for Ingenuity at JPL, in a statement. "When we hit 10 feet, Ingenuity will go into a hover that should last -- if all goes well -- for about 30 seconds."
During this hover, the helicopter will capture images 30 times per second to feed into the navigation computer, making sure Ingenuity remains level and in the middle of its 33-by-33-feet (10-by-10-meter) air field.

Ingenuity will use a second higher-resolution camera pointing toward the horizon to capture images each time the helicopter is aloft.
Once the helicopter lands on Mars, it will send back data through the rover to Earth.
Lower-resolution black-and-white images from the helicopter's navigation camera likely will be available first, followed by the color image the next day. The rover will also send back images and video from several of its cameras. Perseverance has been practicing capturing video of the helicopter as it has tested its blades in recent days.

"The Wright brothers only had a handful of eyewitnesses to their first flight, but the historic moment was thankfully captured in a great photograph," said Michael Watkins, director of JPL, in a statement. "Now 117 years later, we are able to provide a wonderful opportunity to share the results of the first attempt at powered, controlled flight on another world via our robotic photographers on Mars."
That first black-and-white image from the helicopter's navigation camera is key because "that will help us localize where the helicopter landed," said Tim Canham, Ingenuity operations lead at JPL.
This graphic shows a simulation of Ingenuity's flight and the Perseverance rover's plan to capture video of the flight.
This graphic shows a simulation of Ingenuity's flight and the Perseverance rover's plan to capture video of the flight.
Grip, the chief pilot for Ingenuity, will be analyzing the first data returned from the helicopter to determine if it lifted, hovered, rotated and landed successfully.
"The primary purpose of this project is to get that detailed engineering data that we can see the performance of the vehicle, and then that data can be used by future projects to make even bigger and better helicopters," Canham said.
Future flights
Members of the Ingenuity team are nervous but excited looking ahead to this historic moment, which they have been preparing for over the last eight years.
There are four possibilities for Monday: full success, partial success, insufficient or lack of data, or failure, Aung said.
"From day one of this project our team has had to overcome a wide array of seemingly insurmountable technical challenges," Aung said. "We got this far with a never-say-die attitude, a lot of friends from many different technical disciplines, and an agency that likes to turn far-out ideas into reality."

After the first flight, Ingenuity will get a "rest day" to charge up using its solar panel. The team will use data sent back by the helicopter that week to plan its next flight.

The cadence between flights will get progressively shorter. Ingenuity could fly four days after the first flight, then three days after the second flight and so on. The latter flights could see the helicopter rising as high as 16 feet (5 meters) and performing lateral movements up to 50 feet (15 meters) out and back.
"Once we get to the fourth and fifth flights, we'll have fun," Aung said. "We really want to push the limits. It's not every day that you get to test a rotorcraft on Mars. So we want to be very adventurous."

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Re: 3 For Mars

#59 Post by TheGreenGoblin » Sun Apr 18, 2021 6:57 am

All power to Ingenuity's rotors! A new helicopter altitude record of 16 feet... :-bd
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Re: 3 For Mars

#60 Post by Boac » Sun Apr 18, 2021 7:22 am

?? Is this a TGG hover record or what?

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