About

Gender

Male


Location

johannesburg


About Me:

see google earth for distances. i was a qualified weapons mechanic in the 70,s with the South African airforce


Hometown:

Johannesburg South Africa


Activity Feed

ian powell left a comment for Carl Visagie
"howzit Carl
i also have been working and have not been able to do the things i like.
if in the 70's i had joined the anc then i would be eating off the gravy now.
but as i sided with old constance viljoen i am living in the kaaaai and eating pap and…"
Sep 5, 2008
ian powell replied to Tom Sozzi's discussion Lipoly batteries (problem)
"I also have the same problem with this type of battery.
Infact some of my batteries expanded and nearly popped.
I am told that the voltage must never drop below 2v of the actual voltage when at rest ,eg if indicating 12.5v at full charge when you…"
Aug 8, 2008
ian powell left a comment for Carl Visagie
"where you been"
Aug 3, 2008
ian powell commented on Nullified's blog post Missouri S&T UAV Team - More Autonomous Flying and Bottle Drop
"To stop the bottle breaking put a small drouge parachute to slow down the speed it hits the ground,this will help to calculate the trajectory and save the contents on the payload."
Jul 8, 2008
ian powell left a comment for Richard Embry
"is the rocket in your picture a loaned old mution from the army or is your own designed rocket
Looks interesting"
Jul 2, 2008
ian powell commented on Chris Anderson's blog post How can we make IR beacons with unique IDs for Blimpduino?
"First let the beacons have there own code.
Place the detector sensor facing forward nose first on the blimp
First command to blimp is rotate about its own axis recording the signals receceived
Second rotate until receiving the coded beacon…"
Jun 26, 2008
ian powell commented on Chris Anderson's blog post Five things I learned at AUVSI today
"On the point of mil specs
We used to steal ( in my youth) the 58 point connectors gold plated used on the aircraft to connect the various rocket pods, systems and such.Costing about R200 000.00( $ 50 000.00 70s price) a piece and receive about $70…"
Jun 25, 2008
ian powell commented on Chris Anderson's blog post Is GPS good enough for altitude hold?
"In my experiance in the airforce with various camera pods and mapping cameras attached to a pod on board an mirage jet in the 70,s, we first recorded the height before taking the frame.
If your intention is to map then use more distance between…"
Jun 25, 2008
ian powell commented on Chris Anderson's blog post Is GPS good enough for altitude hold?
"Why the need for accurate alt.
If it is to accurate then your uav and system is going to chase the height.
In real flight as a pilot the craft is going to rise and fall due to turbelance and other factours but on average will remain constant.
You…"
Jun 24, 2008
ian powell left a comment for Rory Paul
"Am starting a DIY POWER station for your home
Also starting a rubber powered UAV using mechnical nav based on sextants and old flint compasses

Thanks for the offer will keep you in mind for parts and such."
Jun 4, 2008
ian powell commented on Jack Crossfire's photo
"remines me of the first picture of Ivgor and the first flight by a rotor wing aircraft.
I think you need to clean up the line a bit."
May 31, 2008
ian powell replied to Bill's discussion Has any one tried the IATech, Micro SmartIMU
"Some times it about price,
Diy is about achieving the same but on a shoe string.
Still would like to see this items specs in the sea.
One can use a car nav sytem like ent or simlar it has all you need just need to link to the servos.
and you need to…"
May 31, 2008
ian powell posted a discussion
The spinoffs that this wesite is creating is amazing.The ideas been thrown around and discussed go to show that many people are thinking on the same plain.When it seems that one man come up the single idea that if fact many where working to a…
May 31, 2008
ian powell replied to SmashLab's discussion Discovery Channel seeks expert to help with experimental water rescue vehicle
"Just to move more thoughts about your idea.
If you use an old Kawaski jet ski,take off the handle,use chris,s autopilot project,remember you dont need to staberlise the unit, and hey presto you have the device you are looking for.
Just remember to…"
May 29, 2008
ian powell replied to SmashLab's discussion Discovery Channel seeks expert to help with experimental water rescue vehicle
"The cruising industry has what is know as a MOB(man overboard) device you throw into the water near the person overboard.
This device emits smoke and light so when you can turn around you have a visual of the persons position.
I tried to develop a…"
May 28, 2008
ian powell commented on Jack Crossfire's blog post Rotorcraft endurance records 4 U
"I think fixed wing is better suited to UAV roles than helis.
Faster delivery to area of opertation,remember helis have a terminal forward speed.
More fuel effience and longer staying on post.
i dont really see a need for a vertical UAV.
Small UAVS…"
May 27, 2008
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