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Contra-rotating helicopter now based on Mars

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Contra-rotating helicopter now based on Mars

Old 20th Feb 2021, 00:51
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Originally Posted by munnst View Post
Wasn't one of the surprising things learnt about Mars is the wind and dust is very light.
I seem to recall previous rovers were expected to have a limited life span due to dust build up on the solar panels but this never happened. Which is why the older rovers are still going, or at least went for a lot longer than expected.
Not sure about that, think the Curiosity panels are down to about 23% of clean panel power because of the dust, with no easy fix in sight..Future martians may need a whisk broom as their national emblem>
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Old 20th Feb 2021, 02:50
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Just in...


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Old 20th Feb 2021, 05:17
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Rules

Originally Posted by md 600 driver View Post
Does the operator need a licence or permit to pilot the helicopter on Mars and who woukd they apply too
public use aircraft...
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Old 20th Feb 2021, 06:24
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Originally Posted by etudiant View Post
Not sure about that, think the Curiosity panels are down to about 23% of clean panel power because of the dust, with no easy fix in sight..Future martians may need a whisk broom as their national emblem>
Curiosity is powered by isotope battery, no solar cells!

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Old 20th Feb 2021, 13:28
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Originally Posted by Jetstream67 View Post
Anyone know if a UK licence is ok there ?
It might be, but you will have to wait until they build a hotel so you can isolate for 14 days upon arrival.
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Old 20th Feb 2021, 18:09
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Originally Posted by Jetstream67 View Post
Anyone know if a UK licence is ok there ?
You can use a Martian license in the UK, but not a UK license on Mars.
Thats the way the #MARSBARS agreement was negotiated, but good news. It’s a soft border, just don’t order oysters.
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Old 20th Feb 2021, 19:55
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I'd posted a thread about this helicopter back in August 2019 but there wasn't any discussion on it. Here's a great video with more details on the helicopter:

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Old 21st Feb 2021, 05:39
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Originally Posted by skadi View Post
Curiosity is powered by isotope battery, no solar cells!
According to the video filmed at NASA and linked in post #27 it has solar cells and a rechargeable battery. The solar cells are in the small panel above the blades. A one day charge fully charges the battery and allows a 90 second (I think it was) flight.

I don't think Atomic batteries are used very often because of the concern of the results of them falling back to Earth in the event of some failure.
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Old 21st Feb 2021, 06:35
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Originally Posted by jimjim1 View Post
According to the video filmed at NASA and linked in post #27 it has solar cells and a rechargeable battery. The solar cells are in the small panel above the blades. A one day charge fully charges the battery and allows a 90 second (I think it was) flight.

I don't think Atomic batteries are used very often because of the concern of the results of them falling back to Earth in the event of some failure.
I referred to post#21: Curiosity is the first rover, powered by isotope battery. Inguenity, the helicopter transported with rover Persevance, ( also with isotope battery ) is powered by solar cells.

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Old 22nd Feb 2021, 15:51
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Wink




A Martian Kamov-er and thought the Russians sent Ingenuity!
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Old 22nd Feb 2021, 18:59
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Dont forget Ken Wallis flew one of his autogiros "on Mars" for the Ray Bradbury " Martian Chronicles" film
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Old 24th Feb 2021, 19:56
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Originally Posted by etudiant View Post
Not sure about that, think the Curiosity panels are down to about 23% of clean panel power because of the dust, with no easy fix in sight..Future martians may need a whisk broom as their national emblem>
And of course the Perseverance rover is powered by heat from Plutonium radioactive decay; I wonder how long it will operate?
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Old 25th Feb 2021, 07:18
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Originally Posted by Winemaker View Post
And of course the Perseverance rover is powered by heat from Plutonium radioactive decay; I wonder how long it will operate?
More than 10 years:

https://space.stackexchange.com/ques...-nuclear-power

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Old 24th Mar 2021, 00:03
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Mars helicopter

I can only begin to imagine the work and engineering that went into building the helicopter drone they are about to fly on Mars and although we have many problems to solve here, on the only planet we are likley to inhabit for a long while or even ever, I believe the money is well spent for reasons most on this forum would not doubt.

However, I read something that stuck in my craw today about one of the little " easter eggs" they packed away on the the little Mars ship. A postage stamp sized piece of original fabric from the Wright flier is abord the rotorcraft. I do appreciate the sentiment and the fact that they made the gesture, even as wrong headed as I find it. Many of you have seen the quote below so forgive me for that. The Wrights brothers were not fans of the helicopter ever being practical beyond the childs toy that consists of a one piece set of blades glued to a stick that gets spun up between your palms and makes short hops across the room, until Mom points out that " you're gonna put someone's eye out with that thing, take it outside!". One of those things was apparently early inspiration for them to start the whole thing about flying around, so there is a connection to helicopters albeit a weak one. "Like all novices we began with the helicopter in childhood, but soon saw that the helicopter had no future, and dropped it. The helicopter does with great labor only what the balloon does without labor, and is no more fitted than the balloon for rapid horizontal flight. If its engine stops, it must fall with deathly violence, for it can neither glide like the aeroplane or float like the balloon. The helicopter is much easier to design than the aeroplane, but is worthless when done.

Wilbur Wright, letter written in 1907. Quoted in the 1954 book
Miracle at Kitty Hawk: The Letters of Wilbur and Orville Wright Miracle at Kitty Hawk: The Letters of Wilbur and Orville Wright
."

Clearly they were not future casters in the vein of Leonardo, Jules Vern, or hey.....how about Sikorsky or Juan de la Cierva. Maybe there are no people at JPL who know who Arthur Young, Frank Piasecki, or Stanley Hiller are. How cool would it have been to put a piece of the fabric from the VS 300 on the Mars helicopter?

I know this is a bit like the folks who go to movies ( remember doing that?)and point out all the errors in something because they happen to know more than your average Joe about it. It's a small thing but generating lift with a rotary wing is a lot different from a fixed wing. Sikorsky designed both types with admirable results, The Wrights scoffed at one and barely flew the other before many others joined them. They were brilliant about some thngs and it paid off when they were persistant but how about credit where it is due?

Hmmmmm. I'm adding an after thought here. Perhaps it is splendid irony that the fabric patch was placed on board. A slight poke in the eye to Wilbur for his disregard of the helicopter.

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Old 10th Apr 2021, 07:45
  #35 (permalink)  
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https://phys.org/news/2021-04-nasa-m...ht-sunday.html

NASA's Mars Helicopter to make first flight attempt Sunday

NASA's Ingenuity Mars Helicopter is two days away from making humanity's first attempt at powered, controlled flight of an aircraft on another planet. If all proceeds as planned, the 4-pound (1.8-kg) rotorcraft is expected to take off from Mars' Jezero Crater Sunday, April 11, at 12:30 p.m. local Mars solar time (10:54 p.m. EDT), hovering 10 feet (3 meters) above the surface for up to 30 seconds. Mission control specialists at NASA's Jet Propulsion Laboratory in Southern California expect to receive the first data from the first flight attempt the following morning at around 4:15 a.m. EDT......

[At] 10:53 p.m. EDT, Ingenuity will begin undergoing its myriad preflight checks. The helicopter will repeat the blade-wiggle test it performed three sols prior. If the algorithms running the guidance, navigation, and control systems deem the test results acceptable, they will turn on the inertial measurement unit (an electronic device that measures a vehicle's orientation and rotation) and inclinometer (which measures slopes). If everything checks out, the helicopter will again adjust the pitch of its rotor blades, configuring them so they don't produce lift during the early portion of the spin-up.

The spin-up of the rotor blades will take about 12 seconds to go from 0 to 2,537 rpm, the optimal speed for the first flight. After a final systems check, the pitch of the rotor blades will be commanded to change yet again—this time so they can dig into those few molecules of carbon dioxide, nitrogen, and argon available in the atmosphere near the Martian surface. Moments later, the first experimental flight test on another planet will begin.

"It should take us about six seconds to climb to our maximum height for this first flight," said JPL's Håvard Grip, the flight control lead for Ingenuity. "When we hit 10 feet, Ingenuity will go into a hover that should last—if all goes well—for about 30 seconds."

While hovering, the helicopter's navigation camera and [email protected] altimeter will feed information into the navigation computer to ensure Ingenuity remains not only level, but in the middle of its 33-by-33-foot (10-by-10-meter) airfield—a patch of Martian real estate chosen for its flatness and lack of obstructions. Then, the Mars Helicopter will descend and touch back down on the surface of Jezero Crater, sending data back to Earth, via Perseverance, to confirm the flight.

Perseverance is expected to obtain imagery of the flight using its Navcam and Mastcam-Z imagers, with the pictures expected to come down that evening (early morning Monday, April 12, in Southern California). The helicopter will also document the flight from its perspective, with a color image and several lower-resolution black-and-white navigation pictures possibly being available by the next morning......

NASA TV will air live coverage of the team as they receive the data, with commentary beginning at 3:30 a.m. EDT.
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Old 10th Apr 2021, 10:13
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How do they recharge it?
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Old 10th Apr 2021, 11:18
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Originally Posted by Fareastdriver View Post
How do they recharge it?
Solar panel. The flat lunch-tray sized thing on top.
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Old 12th Apr 2021, 14:27
  #38 (permalink)  
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https://mars.nasa.gov/technology/hel...than-april-14/

Mars Helicopter Flight Delayed to No Earlier than April 14

Based on data from the Ingenuity Mars helicopter that arrived late Friday night, NASA has chosen to reschedule the Ingenuity Mars Helicopter’s first experimental flight to no earlier than April 14.

During a high-speed spin test of the rotors on Friday, the command sequence controlling the test ended early due to a “watchdog” timer expiration. This occurred as it was trying to transition the flight computer from ‘Pre-Flight’ to ‘Flight’ mode.

The helicopter is safe and healthy and communicated its full telemetry set to Earth.

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.

The helicopter team is reviewing telemetry to diagnose and understand the issue. Following that, they will reschedule the full-speed test.
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Old 14th Apr 2021, 14:20
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https://spaceflightnow.com/2021/04/1...-first-flight/

Mars helicopter needs a software update before attempting first flight

NASA said Monday the Ingenuity helicopter needs a software update to resolve a problem that cut short the drone’s rotor startup sequence on Mars last week, postponing the craft’s first flight in the Red Planet’s atmosphere until later this month.

The helicopter — set to try to become the first craft to perform powered flight in the atmosphere of another planet — aborted an attempted spin-up of the its counter-rotating blades Friday after its autonomous control software detected a problem.

The lightweight helicopter was programmed to power up its rotors to flight speed near 2,500 rpm for a final pre-flight checkout Friday, leading to an attempt at a first flight Sunday, April 11. But the premature end to the high-speed spin test prompted ground teams to delay Ingenuity’s first test flight to no earlier than Wednesday, April 14.

In an update released late Monday by NASA’s Jet Propulsion Laboratory, mission managers said engineers identified a software fix for the “command sequence issue” that ended the high-speed spin-up test Friday.

Officials at JPL, which manages the Ingenuity helicopter project, did not announce a new target date for the rotorcraft’s first test flight. Ground teams hope to determine a new target date next week for the helicopter’s first flight.....
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Old 15th Apr 2021, 07:53
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Did they try turning it off and turning it back on again?
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