AIAA Journal of Spacecraft and Rockets |
  |
AIAA Journal of Spacecraft and Rockets |
 Jan 2 2010, 10:49 AM
Post
#1
|
|
 Senior Member  Group: Members Posts: 1147 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004  |
Issue 6 from 2009 is freely accessible
http://www.aiaa.org/content.cfm?pageid=322...=25&sItem=6 UMSF related papers: Phoenix Landing Site Hazard Assessment and Selection Supersonic Performance of Disk-Gap-Band Parachutes Constrained to a 0-Degree Trim Angle (MSL) -------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
 |
 
|
|
Jan 2 2010, 05:42 PM
Post
#2
|
|
 Member Group: Members Posts: 642 Joined: 23-December 05 From: Forest of Dean Member No.: 617 |
As @doug_ellison pointed out on Twitter, the authors of the latter paper have made an old, unfortunate error. It's apparent in the first sentence of the introduction...
QUOTE Supersonic wind-tunnel tests of 0.813 m disk-gap-band parachutes were conducted in a 10 x 10 ft cross section of a closed-loop wind tunnel. 
-------------------- --
Viva software libre! |
|
|
|
|
Jan 2 2010, 05:44 PM
Post
#3
|
|
 Administrator Group: Chairman Posts: 13250 Joined: 8-February 04 Member No.: 1 |
My gripe was the drawing of the parachute that was marked out in inches - without even, anywhere, saying 'inches'. Just '22.00 approx' on the width. Oh, and the well known ounces per square yard.
|
|
|
|
|
Jan 2 2010, 08:15 PM
Post
#4
|
|
 Senior Member Group: Moderator Posts: 6481 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Man...If there's ONE lesson that should have been permanently learned for a reason I won't rehash in every aspect of UMSF, this is it.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
|
|
|
|
|
Jan 2 2010, 08:41 PM
Post
#5
|
|
|
Administrator Group: Chairman Posts: 13250 Joined: 8-February 04 Member No.: 1 |
The 10ft x 10ft wind tunnel doesn't bother me so much - it was probably built as a 10ft x 10ft wind tunnel, like the 120ft wind tunnel at Ames - that's what it's called.
But unless it's in the form of a pseudo proper noun like that - it is utterly horrifying (as Scott suggested in marsandme a sol or so ago) that they would use these outdated units. |
|
|
|
|
Jan 7 2010, 06:17 PM
Post
#6
|
|
|
Senior Member Group: Members Posts: 1147 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
A few more UMSF-related papers in sample issues of AIAA journals
JOURNAL OF GUIDANCE, CONTROL, AND DYNAMICS Multiple-Model Adaptive Fault-Tolerant Control of a Planetary Lander Design of Solar Sail Trajectories with Applications to Lunar South Pole Coverage JOURNAL OF PROPULSION AND POWER Numerical Simulation of SMART-1 Hall-Thruster Plasma Interactions Dawn Ion Propulsion System: Initial Checkout After Launch -------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
|
|
|
|
Jan 1 2011, 05:31 PM
Post
#7
|
|
|
Senior Member Group: Members Posts: 1147 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
the 6th issue of 2010 of the Journal of Spacecraft and Rockets is now accessible for free
http://www.aiaa.org/content.cfm?pageid=322...=25&sItem=6 lots of Stardust-reentry related paper, ExoMars, human exploration of asteroids etc -------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
|
|
|
|
|
Lo-Fi Version | Time is now: 24th May 2013 - 01:50 PM |
|
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 a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here. |
|
