Thrust Vectoring Autonomous LEM (Lunar Excursion Module) Build - Page 2 - RCCanada - Canada Radio Controlled Hobby Forum
RCCanada - Canada's Radio Control Hobby Forum
Electric Flight Discuss Electric Flight in Canada

Reply
 
Thread Tools Display Modes
Old 06-27-2019, 04:03 PM   #11
mattcave
RCC Apprentice
 
I am: Matt C
Join Date: Jan 2014
Location: Toronto, ON
Radio of choice:
Spektrum DX7s
# of RCs: 4

Feedback: 8 / 100%
Posts: 43
Total Props: 0
Re: Thrust Vectoring Autonomous LEM (Lunar Excursion Module) Build


       Remove this ad - become a site supporter!
I wonder if some of the modern flight controllers (e.g something like the STM32 based board that run iNav) could handle the thrust vectoring system?
mattcave is offline   Quick reply to this message.

Sponsored Links - Subscribe to remove this ad.
Old 06-28-2019, 11:15 PM   #12
vaalleon
RCC Contributor
 
vaalleon's Avatar
 
I am: VAL
Join Date: Feb 2014
Location: phoenix

Feedback: 0 / 0%
Posts: 406
Total Props: 1
Re: Thrust Vectoring Autonomous LEM (Lunar Excursion Module) Build

Thanks all for the comments and the ideas. I will try to answer all questions in one:

- I found the problem. I was happy that the nozzle was letting me take care of pitch and roll with only two servos... Not any more. it took me tens of tests and some super deep thinking to figure it out. The slight flexing of the nozzle in the Y axis when X servo was pulling and vice versa was causing the trouble. I added one more servo to pitch to counter the existing servo and the wobble almost diminished. Of course, you never until you do the field test and it will still need some fine tuning. Before going forward I need to get the landing gear in so I don't damage the servos outdoors.
- The flight controller is CC3D revolution.
- Adding weight to the bottom is not a stabilizing factor in this concept. These units work with the same logic of balancing a stick on your finger. However, many times the tuning is supported with lowering the center of lateral resistance.

Contacting NASA is an awesome idea

Attached a pic of the landing gear build.

Thanks!
Attached Thumbnails
Click image for larger version

Name:	IMG_20190628_203318696.jpg
Views:	51
Size:	902.4 KB
ID:	1635531  
vaalleon is offline   Quick reply to this message.
Old 06-29-2019, 08:43 PM   #13
vaalleon
RCC Contributor
 
vaalleon's Avatar
 
I am: VAL
Join Date: Feb 2014
Location: phoenix

Feedback: 0 / 0%
Posts: 406
Total Props: 1
Re: Thrust Vectoring Autonomous LEM (Lunar Excursion Module) Build

Outdoors maiden… The first very short flight (or long crash landing) is before the fine tuning. The unit was uncontrollable because of the T. bowl effect. I did some further tuning after this flight, re-charged and hit the park. The wind picked up before the second flight but still wanted to give it a shot. The second flight was a success. The unit was very controllable despite the wind. Will need some further tuning but so far so good. My only concern is how the electronics will hold in a longer flight. This is one of the heaviest 64mm units that I have built, and the nozzle is equipped with 2 variable and 4 fixed vanes, packing the airway with lots of hardware. So, I will do a flight time test and see if the ESC, motor and the batteries will handle a full flight which will probably take 5 minutes.
The rest of the additions will need to be extremely light. I am not the best artist in town but will do my best to give it a genuine look
Thanks
vaalleon is offline   Quick reply to this message.
 
Old 07-02-2019, 09:00 PM   #14
vaalleon
RCC Contributor
 
vaalleon's Avatar
 
I am: VAL
Join Date: Feb 2014
Location: phoenix

Feedback: 0 / 0%
Posts: 406
Total Props: 1
Re: Thrust Vectoring Autonomous LEM (Lunar Excursion Module) Build

Longer hover test. After 2:30 minutes I touched the motor to see if it overheated and it literally gave me a 3rd degree burn as expected. It was about to give up. I will need to bump up the power setup with a new motor and ESC, possible new batteries. It will probably take about a week. Hoping to get it ready for the 50th anniversary. The tuning seems to be OK for now, didn’t have to touch that again.

vaalleon is offline   Quick reply to this message.
Old 07-07-2019, 08:43 PM   #15
vaalleon
RCC Contributor
 
vaalleon's Avatar
 
I am: VAL
Join Date: Feb 2014
Location: phoenix

Feedback: 0 / 0%
Posts: 406
Total Props: 1
Re: Thrust Vectoring Autonomous LEM (Lunar Excursion Module) Build

Below is another motor test. Haven’t found the right motor yet. Meanwhile working on the rest of the body while waiting for the new motor that I have ordered.
Attached Thumbnails
Click image for larger version

Name:	IMG_20190707_153436920_HDR.jpg
Views:	55
Size:	756.5 KB
ID:	1636361  
vaalleon is offline   Quick reply to this message.
Old 07-13-2019, 09:37 PM   #16
vaalleon
RCC Contributor
 
vaalleon's Avatar
 
I am: VAL
Join Date: Feb 2014
Location: phoenix

Feedback: 0 / 0%
Posts: 406
Total Props: 1
Re: Thrust Vectoring Autonomous LEM (Lunar Excursion Module) Build

New 12 blade fan and ESC installed. It completely threw the prior PID out of the window. Added weight & torque, combined with added body parts messed it up. After a couple of crash landings and one week of trying re-figure the PID and all the rest of the stuff, finally there.

This short flight shows a pretty good performance WITH THE FIRST SUCCESSFUL LANDING��

Now I will work on the GPS for auto-land and do the final touches on the looks.

Thanks

vaalleon is offline   Quick reply to this message.
Old 07-19-2019, 06:55 PM   #17
Ghostflyer
RCC Apprentice
 
I am: David Brouillet
Join Date: Jan 2018
Location: Saint-Basile-Le-Grand, Quebec
Radio of choice:
DX18

Feedback: 3 / 100%
Posts: 30
Total Props: 0
Re: Thrust Vectoring Autonomous LEM (Lunar Excursion Module) Build

Great job.
You should make yourself a saturn5 look alike and launch it with your lem inside.
Rocket come back by paracnute and you pilot the lem to the ground.

That would be awsome.
Ghostflyer is offline   Quick reply to this message.
Old 07-21-2019, 12:58 AM   #18
vaalleon
RCC Contributor
 
vaalleon's Avatar
 
I am: VAL
Join Date: Feb 2014
Location: phoenix

Feedback: 0 / 0%
Posts: 406
Total Props: 1
Re: Thrust Vectoring Autonomous LEM (Lunar Excursion Module) Build

Quote:
Originally Posted by Ghostflyer View Post
Great job.
You should make yourself a saturn5 look alike and launch it with your lem inside.
Rocket come back by paracnute and you pilot the lem to the ground.

That would be awsome.
Thanks bud! That is a possibility actually, as some rocket builders are interested in a project like that

Windy day at the trail. Unfortunately my brain doesn't have an abort button, and after working this hard I have to land this machine on the 50th anniversary. One crash landing due to the LEM antenna getting sucked into the fan. No damage and two successful landings after. Tried to angle the onboard camera like the famous landing footage of LEM. One video shows only onboard cam and the other one is an attempt to show both cams simultaneously. Flag and ladder were contracted to my 7-year-old daughter. They came they came in a little out of spec but she was the lowest bidder😊

Attached Thumbnails
Click image for larger version

Name:	IMG_20190719_201634371 (1).jpg
Views:	49
Size:	781.1 KB
ID:	1638269   Click image for larger version

Name:	IMG_20190719_201648479.jpg
Views:	44
Size:	1.09 MB
ID:	1638271  
vaalleon is offline   Quick reply to this message.
Old 07-21-2019, 09:19 PM   #19
Carlisler
RCC Master Contributor
 
I am: Scott B
Join Date: Sep 2012
Location: Mississauga, ON
Radio of choice:
Jeti
# of RCs: 6

Feedback: 40 / 100%
Posts: 1,096
Total Props: 10
Re: Thrust Vectoring Autonomous LEM (Lunar Excursion Module) Build

Great project bud!

Congrats!!
Carlisler is online now   Quick reply to this message.
Old 07-21-2019, 11:19 PM   #20
Bronson06
RCC Noob
 
I am: Bronson006
Join Date: Nov 2017
Location: Guelph, Ontario, Canada
Radio of choice:
Taranis X9D Plus
# of RCs: 40

Feedback: 0 / 0%
Posts: 10
Total Props: 1
Re: Thrust Vectoring Autonomous LEM (Lunar Excursion Module) Build

Incredible project!!!
Well done!!!!!

Sent from my LM-Q710.FGN using Tapatalk
Bronson06 is offline   Quick reply to this message.
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the RCCanada - Canada Radio Controlled Hobby Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionally, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Radio of choice?
Which radio is your current favorite to use?
Number of RC Vehicles?
How many boats, cars, planes do you own?

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
vBulletin Message

Thread Tools
Display Modes

Forum Jump


All times are GMT -5. The time now is 02:23 PM.


vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.