High altitude balloon payload, from Sable-3 discussion |
High altitude balloon payload, from Sable-3 discussion |
Oct 19 2007, 08:21 AM
Post
#121
|
|
Member Group: Members Posts: 599 Joined: 26-August 05 Member No.: 476 |
Good show! All you need is a whiteboard that you can draw on to illustrate your concepts.
|
|
|
Oct 19 2007, 09:34 AM
Post
#122
|
|
Member Group: Members Posts: 593 Joined: 20-April 05 Member No.: 279 |
A short piece in the Guardian newspaper this week reported that US Meteorologists used to put signs on their balloon instrument packages, warning finders that they would be fined for not returning the contents.
Personally I think UMSF should take the "reward" route. Andy |
|
|
Oct 19 2007, 10:11 AM
Post
#123
|
|
Senior Member Group: Moderator Posts: 2262 Joined: 9-February 04 From: Melbourne - Oz Member No.: 16 |
Good show Doug.
Parafoils - Genius! Coming back to the camera pointing issue that you talked about. With two cameras, I'm as torn as you are about having one landscape and one portrait vs both in portrait. I don't think there is a lot in it, and determining which is best is probably rather dependent on how much the gondola is swinging. At the moment I think I'm inclined to go with the 'double portrait' mode to, as you say, maximize the coverage from horizon to nadir. A slight clarification from what you said, you probably don't want to mount them to get from horizon to nadir in one shot, we really want to be getting the horizon in as much as possible. So the first should probably be mounted so that the image centre is pointed somewhat at the horizon (maybe a little below). Hence the bottom edge of the lower camera will be at 60-65 degrees, hopefully low enough so that with a few fortuitous swings we get some direct nadir imaging. If you can do the tests on the field of view and get an idea of what frame rate we can manage (power, memory), I'll examine some images from other projects to try to get some better statistics on the expected gondola motion and then I'll run some more simulations. Oh, and about mixing units - I now know who I'll be blaming when we loose it on EDL! James -------------------- |
|
|
Oct 19 2007, 10:33 AM
Post
#124
|
|
Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
Man...you need an haircut...
-------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
|
|
Oct 19 2007, 11:28 AM
Post
#125
|
|
Founder Group: Chairman Posts: 14431 Joined: 8-February 04 Member No.: 1 |
You need a shave
|
|
|
Oct 19 2007, 11:52 AM
Post
#126
|
|
Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Hahahah... buuuuurn!
-------------------- |
|
|
Oct 19 2007, 11:54 AM
Post
#127
|
|
Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
-------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
|
|
Oct 19 2007, 01:14 PM
Post
#128
|
|
Member Group: Members Posts: 593 Joined: 20-April 05 Member No.: 279 |
Parafoils - Genius! ...and the mark XXIII-or-so could benefit from this in a big way. Assume a 30km release point and a (very poor = easily achievable) 5:1 sink rate, onboard gps and a "clever" payload - it could fly itself back to where it started. Preferably landing in the open boot of the UMSF Support Vehicle. As to Doug's hair - I'd sooner he was nailing stuff together than wasting time down the boutique, Ustrax! Andy G |
|
|
Oct 19 2007, 01:51 PM
Post
#129
|
|
Founder Group: Chairman Posts: 14431 Joined: 8-February 04 Member No.: 1 |
Parafoils - Genius! http://www.youtube.com/watch?v=HU2tymr4Rs0 Their plan is, hopefully, to do exactly that - have the payload fly home again. Not a simple problem however. As you can see, getting it to fly straight is non trivial. Doug |
|
|
Oct 19 2007, 02:06 PM
Post
#130
|
|
Member Group: Members Posts: 593 Joined: 20-April 05 Member No.: 279 |
I thought the parafoil's quote came from James burrowing into your videos, Doug. I mean we are all sat watching Gizmo, like myself, aren't we?
Andy |
|
|
Oct 19 2007, 02:34 PM
Post
#131
|
|
Senior Member Group: Moderator Posts: 2262 Joined: 9-February 04 From: Melbourne - Oz Member No.: 16 |
Actually my comment did come from Doug talking about it in the first video.
But I admit, I did then go, "Oooh Doug has some more videos" and watched parafoil tests and Gizmo. -------------------- |
|
|
Oct 19 2007, 04:11 PM
Post
#132
|
|
Founder Group: Chairman Posts: 14431 Joined: 8-February 04 Member No.: 1 |
Gizmo may well be involved in the final part of the trilogy If she'll sit still.
Doug |
|
|
Oct 19 2007, 06:19 PM
Post
#133
|
|
Senior Member Group: Members Posts: 1281 Joined: 18-December 04 From: San Diego, CA Member No.: 124 |
I am assuming that since this is UMSF we don't have to worry about Doug posting a video of him trying this concept vehicle:
Balloon Flight And I must protest that my UMSF addiction is now spilling over in to my YouTube addiction - Phobos-Grunt updates AND dogs on skateboards?!?!?! Where do I sign! -------------------- Lyford Rome
"Zis is not nuts, zis is super-nuts!" Mathematician Richard Courant on viewing an Orion test |
|
|
Oct 19 2007, 11:00 PM
Post
#134
|
|
Founder Group: Chairman Posts: 14431 Joined: 8-February 04 Member No.: 1 |
Part the Third
http://uk.youtube.com/watch?v=U0IJM5EWu9Q |
|
|
Oct 20 2007, 01:56 AM
Post
#135
|
|
Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
Does the data from the GPS device include ALTITUDE? If not, shouldn't some kind of altimeter/barometer be included?
(The shed looks smaller than it did in the original wide angle photos) -------------------- If Occam had heard my theory, things would be very different now.
|
|
|
Lo-Fi Version | Time is now: 29th March 2024 - 06:00 AM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |