Vigils Suck

[ScottyE 0]

Anyone know the altitude of his home DZ ? subtract Atlanta = Phantom ground ?

[LloydDobbler 2]

Quote

It is also possible the unit was not operated properly by the jumper due to being left on from traveling and still recognized the Colorado ground as zero.

Interesting thought.

Cedartown's elevation is 974 ft. Depending on this guy's home DZ, he could have about 500 feet of variance in elevation:

Mile-Hi - 5052 ft
Boulder - 5288 ft
Canon City - 5439 ft

So if we take the highest one of those, ~4450 AGL is the number I come up with as where the unit would think the ground would be. (or ~4075 if the jumper jumps at Mile-Hi). But that's ground level, not firing height.

Of course, as we all know, pilot chute hesitations & other things (density altitude, etc) could possibly affect an AAD fire, so it's all speculation until we see the actual data from Vigil.

I just thought I'd throw those numbers out there, in case anyone wanted to play with them a little more.

Signatures are the new black.

[Cuse313 0]

Quote

Quote

It is also possible the unit was not operated properly by the jumper due to being left on from traveling and still recognized the Colorado ground as zero.

Interesting thought.

Cedartown's elevation is 974 ft. Depending on this guy's home DZ, he could have about 500 feet of variance in elevation:

Mile-Hi - 5052 ft
Boulder - 5288 ft
Canon City - 5439 ft

So if we take the highest one of those, ~4450 AGL is the number I come up with as where the unit would think the ground would be. (or ~4075 if the jumper jumps at Mile-Hi). But that's ground level, not firing height.

Of course, as we all know, pilot chute hesitations & other things (density altitude, etc) could possibly affect an AAD fire, so it's all speculation until we see the actual data from Vigil.

I just thought I'd throw those numbers out there, in case anyone wanted to play with them a little more.

Wouldn't the pressure differences between the two environments (from weather) also affect the unit, not just the ground level differences.

I know we don't know if that's what happened just checking my knowledge.

[LloydDobbler 2]

Quote

Quote

Of course, as we all know, pilot chute hesitations & other things (density altitude, etc) could possibly affect an AAD fire, so it's all speculation until we see the actual data from Vigil.

Wouldn't the pressure differences between the two environments (from weather) also affect the unit, not just the ground level differences.

I know we don't know if that's what happened just checking my knowledge.

Yep. That's 'density altitude' - the pressure altitude adjusted for non-standard temperature. humidity, etc.

Signatures are the new black.