altimeter

[C.I.A.C]

hi, again

here is our way to make an altimeter, its telemetry , here is our team making sure that works

[CSAldridge]

will this type of measurement be allowed for contests instead of a device on the rocket?

it would seem you would need to keep your survey device pretty far from the launch spot to get an accurate reading. lower the angle the more accurate it would be.

and deviation from a vertical launch would compound the inaccuracy. if you could keep the angle below 45 degrees it would seem to be reasonably accurate.

setting it to 45 degrees and pacing off X distance would allow you to quickly determine if you are launching over X feet. (assuming you have a near vertical launch)

now if you had two of these setup at 90 degrees from each other with video cameras, I dont see why it wouldnt be accepted as a legitimate measurement. all necessary data for verifying the flight would be there i would think. put a curved marker to sight against with the angles marked on it so it could show up on the video. would need two surveyors with steady hands though.

on second thought it would be cheaper just to buy an altimeter. interesting method though.

[Spaceman Spiff]

will this type of measurement be allowed for contests instead of a device on the rocket?

it would seem you would need to keep your survey device pretty far from the launch spot to get an accurate reading. lower the angle the more accurate it would be.

and deviation from a vertical launch would compound the inaccuracy. if you could keep the angle below 45 degrees it would seem to be reasonably accurate.

setting it to 45 degrees and pacing off X distance would allow you to quickly determine if you are launching over X feet. (assuming you have a near vertical launch)

now if you had two of these setup at 90 degrees from each other with video cameras, I dont see why it wouldnt be accepted as a legitimate measurement. all necessary data for verifying the flight would be there i would think. put a curved marker to sight against with the angles marked on it so it could show up on the video. would need two surveyors with steady hands though.

I think the concerns people had in the past were that the readings were subject to human error so anyone could dispute them if they wanted to be a pain.



on second thought it would be cheaper just to buy an altimeter. interesting method though.

[Spaceman Spiff]

will this type of measurement be allowed for contests instead of a device on the rocket?

it would seem you would need to keep your survey device pretty far from the launch spot to get an accurate reading. lower the angle the more accurate it would be.

and deviation from a vertical launch would compound the inaccuracy. if you could keep the angle below 45 degrees it would seem to be reasonably accurate.

setting it to 45 degrees and pacing off X distance would allow you to quickly determine if you are launching over X feet. (assuming you have a near vertical launch)

now if you had two of these setup at 90 degrees from each other with video cameras, I dont see why it wouldnt be accepted as a legitimate measurement. all necessary data for verifying the flight would be there i would think. put a curved marker to sight against with the angles marked on it so it could show up on the video. would need two surveyors with steady hands though.

on second thought it would be cheaper just to buy an altimeter. interesting method though.

Oops. I accidentally posted inside your quote.

I said: I think the concerns people had in the past were that the readings were subject to human error so anyone could dispute them if they wanted to be a pain.

[CSAldridge]

yeah i suppose.

The idea of being so reliant on electronics for something so simple festers in my soul though.

think i might make one of these till i can get the required equipment.

[C.I.A.C]

hi,
we use that because in the moments we won`t use electronics, it`s 100m away fram the louncher

[Spaceman Spiff]

hi,
we use that because in the moments we won`t use electronics, it`s 100m away fram the louncher

I think I read somewhere that the optimal distance to take the measurement of the angle is the same distance from the launcher as the expected altitude of the rocket. If you are going to fly 200 meters high you should be 200 meters away from the launcher.

[U.S. Water Rockets1]

hi,
we use that because in the moments we won`t use electronics, it`s 100m away fram the louncher

I think I read somewhere that the optimal distance to take the measurement of the angle is the same distance from the launcher as the expected altitude of the rocket. If you are going to fly 200 meters high you should be 200 meters away from the launcher.

I don't think we could reliably see our launching pad from 2200+ feet away. The rocket is practically invisible at this height too. You would need some like of scope to sight in on our rocket. We'll stick to what we've been using. It's a lot less work!