Following up on aeronautics and human performance appears to be a strong past time of mine. I don't have the cajones to do anything like I what I saw today live. But...having nothing interesting to do on a Sunday, I decided to collect 1 min sample data for the point leading up to the jump. The data came from the streamed telemetry on Red Bull's Youtube channel. How much difference that had compared to the actual instruments, I do not know. What is interesting to see is the variation of the outside temperature with altitude (blue line) as it crosses the 50000 ft point. You can also see things like the ascend rate lulling between 40 and 80 minutes and altitude leveling off at 128,000 as the helium was vented and the capsule depressurized to facilitate the jump. What would have been great to check out is how the ground speed varied, as the capsule came into contact with the easterly jet streams at some point.
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I missed the live broadcast, and now I was wondering if there would be some way to get the telemetry data. Thanks for making this graph, and wouldn't you happen to know if there was any way to get the descent suit telemetry?
ReplyDeleteJarfil,
ReplyDeleteEven i too missed the broadcast, but i think you can get telemetry data info on their official site. good luck.
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I'd like to use this chart, with attribution, with my physics students. How should the attribution read, if you are amenable to its use?
ReplyDeletePeter,
ReplyDeleteGo ahead and use the plot by saving as a jpeg or taking a screenshot. If you want the raw data, feel free to email me and I'll send it to you.
Hi, that altitude plot made from telemetry data is very interesting. I'm interested in the free fall physics, do you know if the jump data is available somewhere (height or pressure or anything vs time would already be enough to get started) ?
ReplyDeleteThx
Great plot! I teach maths in Oxford, I am interested too in the speed/time data; it is an amazing example of terminal velocity. I use an example in maths of a differential equation describing the motion of a parachutist of mass m kg travelling downwards with an initial speed u metres per second and subject to air resistance proportional to his current speed v. It would be great to see some real data to compare to the theoretical model - I have been looking on the net to no avail! I am david.harris@stclares.ac.uk
ReplyDeleteHello
ReplyDeleteIf you could send me the raw data I would be very pleased.
I teach physics at a Danish High School andwe have been talking a lot about the skydive.
I would be very nice to have the descend data. I can not find them at the official RedBull website.
You can use the offical video to get time and velocity just before Felix hits the maximum velocity.
Best regards
Mikkel Rønne
mr @ brondby-gym.dk
Any chance of getting that raw telemetry data for Friday?
ReplyDeleteThis is all I have see on the official website so far:
ReplyDeleteAltitude Felix Baumgartner stepped off the capsule:
39,045 meters / 128,100 feet
Fastest speed achieved during freefall:
1,342.8 km/h / 833.9 mph (Mach 1.24)
Time elapse before reaching speed of sound during freefall:
34 seconds
Vertical distance of freefall:
36,529 meters / 119,846 feet
Total time spent in freefall:
4 minutes 22 seconds
Parachute pulled:
5,300 ft above the ground
Total time from the moment he jumped to landing:
9 minutes 9 seconds
Distance between launch and landing positions:
70.5km / 43.8miles
Records achieved (awaiting certification):
- First human to break the speed of sound in freefall without mechanical intervention
- Freefall from the highest altitude
- Longest vertical distance in freefall
- Highest manned balloon flight
I was really hoping for that telemetry data for a pro-d session tomorrow.
ReplyDeleteHi I don't have the telemetry data for the way up, but here you go for the way down - also taken by stepping through the video.
ReplyDeleteif you compare his velocity with that predicted by the equations of motion he did a pretty good rendition of a falling rock till about 32 seconds, when air resistance started slowing him down.
good luck,
M.
time (s) predicted v(m/s) actual v(m/s) actual v(km/hr)
0 0 0
1 9.81
2 19.6
3 29.4
4 39.2
5 49.1
6 58.9
7 68.7
8 78.5
9 88.3
10 98.1
11 108
12 118
13 128
14 137
15 147
16 157
17 167
18 177
19 186
20 196
21 206 189 681
22 216 198 713
23 226 207 744
24 235 210 755
25 245 228 821
26 255 232 836
27 265 244 878
28 275 248 892
29 284 259 932
30 294 266 957
31 304 273 981
32 314 276 992
33 324 286 1029
34 334 290 1044
35 343 293 1053
36 353 298 1071
37 363 303 1090
38 373 310 1115
39 383 312 1123
40 392 316 1137
41 402 320 1153
42 412 322 1158
43 422 323 1161
44 432 324 1167
45 441 326 1173
46 451 325 1171
47 461 326 1173
48 471 326 1173
49 481 326 1173
50 491 326 1173
51 500 326 1173
This is great. I must be missing something, but why does the first 21 secs have only the predicted velocity?
ReplyDelete