Date   

Re: BASE 106 completed

David Akerman
 

I like the Gitup Git2; inexpensive, reliable (unlike some GoPros) and very good image quality.  It'll need attaching to a 5V powerbank to last throughout  HAB flight.  Usefully, it can be set to power up and start recording when the powerbank is switched on.

Dave

On 2 May 2018 at 22:12, BASE_DePauw <hlbrooks@...> wrote:
Friends,

Flew BASE 106 for the Greencastle Middle School today.  Surface winds picked up to just over 30 km/hr (20 mph) with gusts to 40 km/hr during balloon fill, but we got the flight string airborne.  Somewhat early burst at 26 km (85,500 feet).  Landed in edge of a grove of trees with lowest box 6 meters (20 feet) above the ground.  Easy pull for the Wonder Pole with hook attachment.

One disappointment, my Contour ROAM 3 camera has reached the end of its life with no easy battery replacement.  I am open to small camera suggestions.  Flying for Thorpe Creek Elementary in Fishers, IN on 16 May.  Looking to find a new camera before that flight.  I like cameras that take video to microSD cards, but could be persuaded to try something else.  It would be nice to stay under 200 grams total weight.

Thanks, as always, for the support,
Howard, BASE_DePauw, KC9QBN



Re: BASE 106 completed

L. Paul Verhage KD4STH
 

Apeman A60 is a good camera as us the Mobius ActionCam .

On May 2, 2018 3:17 PM, "BASE_DePauw" <hlbrooks@...> wrote:
Friends,

Flew BASE 106 for the Greencastle Middle School today.  Surface winds picked up to just over 30 km/hr (20 mph) with gusts to 40 km/hr during balloon fill, but we got the flight string airborne.  Somewhat early burst at 26 km (85,500 feet).  Landed in edge of a grove of trees with lowest box 6 meters (20 feet) above the ground.  Easy pull for the Wonder Pole with hook attachment.

One disappointment, my Contour ROAM 3 camera has reached the end of its life with no easy battery replacement.  I am open to small camera suggestions.  Flying for Thorpe Creek Elementary in Fishers, IN on 16 May.  Looking to find a new camera before that flight.  I like cameras that take video to microSD cards, but could be persuaded to try something else.  It would be nice to stay under 200 grams total weight.

Thanks, as always, for the support,
Howard, BASE_DePauw, KC9QBN


BASE 106 completed

BASE_DePauw
 

Friends,

Flew BASE 106 for the Greencastle Middle School today.  Surface winds picked up to just over 30 km/hr (20 mph) with gusts to 40 km/hr during balloon fill, but we got the flight string airborne.  Somewhat early burst at 26 km (85,500 feet).  Landed in edge of a grove of trees with lowest box 6 meters (20 feet) above the ground.  Easy pull for the Wonder Pole with hook attachment.

One disappointment, my Contour ROAM 3 camera has reached the end of its life with no easy battery replacement.  I am open to small camera suggestions.  Flying for Thorpe Creek Elementary in Fishers, IN on 16 May.  Looking to find a new camera before that flight.  I like cameras that take video to microSD cards, but could be persuaded to try something else.  It would be nice to stay under 200 grams total weight.

Thanks, as always, for the support,
Howard, BASE_DePauw, KC9QBN


Re: HABHUB iOS app

Dan Conley KD2NZQ
 

I believe iOS 11 requires apps to be 64 bit, which older ones aren’t. There were a few legacy apps I wasn’t able to use once I upgraded.

A new version could be released that would make it work again, but if it hasn’t had any development in a while I don’t know how likely that is. 

Dan KD2NZQ


On Sun, Apr 22, 2018 at 12:32 AM, John Fickes <kc0bmf@...> wrote:
Hi All
  My iphone just updated to iOS 11 and it says that the HABHUB  app won't work with this version. Does anyone have any information on this app ?

              Thanks John W0JW   73


[UKHAS] Re: [GPSL] HABHUB iOS app

Steve G8KHW / AJ4XE
 

Cross posting to [UKHAS]

    Steve G8KHW


On 22/04/2018 05:32, John Fickes wrote:
Hi All
  My iphone just updated to iOS 11 and it says that the HABHUB  app won't work with this version. Does anyone have any information on this app ?

              Thanks John W0JW   73


Virus-free. www.avg.com


HABHUB iOS app

John Fickes
 

Hi All
  My iphone just updated to iOS 11 and it says that the HABHUB  app won't work with this version. Does anyone have any information on this app ?

              Thanks John W0JW   73


Re: Hydrogen safety ignition of full sized hydrogen weather balloon

jasonbunwin
 

Never heard about anti static wrist bands. Thanks.


Re: Hydrogen safety ignition of full sized hydrogen weather balloon

dampguy
 

A Cigarette is not hot enough to ignite Hydrogen. You need a spark to get to the ignition temperature. So you can smoke while filling :) If the air is very dry, one needs to do precautions about the static electricity, that might be generated. So you need grounding wires and anti static wristbands...


Re: Superlative high speed video of small hydrogen balloons exploding

Hank Riley
 

No, my post did not indicate one way or the other about:

1.  Having to work at causing hydrogen to burn (in a balloon such as we use).

2.  Normal procedures will not entail an unacceptable risk.


In addition, there was at least one other recent post that did not address
#1 and only #2 indirectly; that was Mark Conner's.

Also Kip's post did not speak about #1 or #2, either.

In a later email I will explain what things I found very valuable to know
that were revealed by the Nottingham video (some in slow motion).  Also a
myth that got busted that is held by some in the amateur radio balloon
launching field.




From: Jason Unwin via Groups.Io <generalripper_1999@...>
To: gpsl@groups.io
Sent: Friday, April 20, 2018 12:34 AM
Subject: Re: [GPSL] Superlative high speed video of small hydrogen balloons exploding

The bottom line seems to be one almost has to WORK AT causing the hydrogen to burn. Normal common sense behavior and procedure should not present an unacceptable risk. Am I reading you all right?



Re: Superlative high speed video of small hydrogen balloons exploding

Dennis Klipa - N8ERF
 

Jason,

Basically that is the right idea.  If you take appropriate precautions you can be OK.  

Technically, hydrogen/oxygen mixtures are some of the easiest to ignite.  This is based on the energy contained in the spark used to ignite the mixture.  Hydrogen/oxygen mixtures will ignite with the weakest of sparks.

Best Regards,
Dennis, N8ERF

On Thu, Apr 19, 2018 at 8:34 PM, Jason Unwin via Groups.Io <generalripper_1999@...> wrote:
The bottom line seems to be one almost has to WORK AT causing the hydrogen to burn. Normal common sense behavior and procedure should not present an unacceptable risk. Am I reading you all right?

Jason Unwin
KF5UEF



Re: Superlative high speed video of small hydrogen balloons exploding

Joe WB9SBD
 

And I'm sorry. the explosion of his party balloons is from the pressure.

I have flown almost just as many garbage bag H2 balloons and intentionally ignited them as I have done flights.

Even several that used gaylord liners. ( a large plastic bag that is a rectangular of 4 by 4 by 8 feet. 128 cuft)
and at best there was a whooshing sound NO POP whatsoever!

Even that video of a large latex balloon probably 6 feet in diameter and 12 feet tall intentionally being ignited with H2 in it did NOT explode.

Joe WB9SBD

The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com

On 4/19/2018 5:38 PM, Bill Brown via Groups.Io wrote:
This fellow claims he is doing this safely (pouring liquid nitrogen into large latex balloons) but I leave it to your opinion if he is doing this safely :-)


- Bill WB8ELK


-----Original Message-----
From: Hank Riley via Groups.Io <n1ltv@...>
To: GPSL <gpsl@groups.io>
Sent: Thu, Apr 19, 2018 5:11 pm
Subject: [GPSL] Superlative high speed video of small hydrogen balloons exploding

Can't give enough praise for this youtube from the University 
of Nottingham.





Everyone on this list should take a look at it. Certainly those 
who launch with hydrogen.

Pure hydrogen and the optimum stoichiometric mix (two H to one O) 
latex balloons filmed by a high speed camera showing exactly what's 
going on.

Narration by Sir Martyn Poliakoff CBE.  Distinguished professor and 
world class authority on chemistry; the recipient of many honors 
and awards.

Hank
____________________________










Re: Superlative high speed video of small hydrogen balloons exploding

Jason Unwin
 

The bottom line seems to be one almost has to WORK AT causing the hydrogen to burn. Normal common sense behavior and procedure should not present an unacceptable risk. Am I reading you all right?

Jason Unwin
KF5UEF


Re: Hydrogen safety ignition of full sized hydrogen weather balloon

Bill Brown
 


This was a test done by a student balloon group from Portland State Univ showing what would happen to a weather balloon of the kind we normally fly. But they ignited it with thermite I believe. I think it would take a lot to actual get one to ignite under safe and normal filling procedures short of sticking a lit cigarette into the balloon.

https://www.youtube.com/watch?v=cQvpK9cl0No

- Bill WB8ELK




-----Original Message-----
From: Bill Brown via Groups.Io <wb8elk@...>
To: GPSL <GPSL@groups.io>
Sent: Thu, Apr 19, 2018 5:39 pm
Subject: Re: [GPSL] Hydrogen safety

Same goes for these folks....hmmm...safety first? :-)


- Bill WB8ELK


-----Original Message-----
From: Hank Riley via Groups.Io <n1ltv=yahoo.com@groups.io>
To: GPSL <GPSL@groups.io>
Sent: Wed, Apr 18, 2018 10:29 pm
Subject: Re: [GPSL] Hydrogen safety

Joe,

It's probably a case of not having a groups.io password, which is
not necessary to just get email the way Mark set this group up.

Here's a sample of groups.io wording that mentions that situation:  
"Are you receiving emails from a Groups.io group but have never visited the
Groups.io website? You probably don't have a password set up yet."

To get a file you do have to have a password.  To just receive GPSL
mail, you don't need the password.  I'm guessing a lot of subscribers
here just read the email.

You probably know all of this, but I'm saying it for the benefit of others
who might not.

HR


From: Joe WB9SBD <nss@...>

That's Interesting.

How can you not be a member and be reading these e mails?

Joe WB9SBD



Re: Hydrogen safety

Bill Brown
 

Same goes for these folks....hmmm...safety first? :-)

https://www.youtube.com/watch?v=WtPrIH0T3b0

- Bill WB8ELK


-----Original Message-----
From: Hank Riley via Groups.Io <n1ltv@...>
To: GPSL <GPSL@groups.io>
Sent: Wed, Apr 18, 2018 10:29 pm
Subject: Re: [GPSL] Hydrogen safety

Joe,

It's probably a case of not having a groups.io password, which is
not necessary to just get email the way Mark set this group up.

Here's a sample of groups.io wording that mentions that situation:  
"Are you receiving emails from a Groups.io group but have never visited the
Groups.io website? You probably don't have a password set up yet."

To get a file you do have to have a password.  To just receive GPSL
mail, you don't need the password.  I'm guessing a lot of subscribers
here just read the email.

You probably know all of this, but I'm saying it for the benefit of others
who might not.

HR


From: Joe WB9SBD <nss@...>

That's Interesting.

How can you not be a member and be reading these e mails?

Joe WB9SBD



Re: Superlative high speed video of small hydrogen balloons exploding

Bill Brown
 

This fellow claims he is doing this safely (pouring liquid nitrogen into large latex balloons) but I leave it to your opinion if he is doing this safely :-)

https://www.youtube.com/watch?v=3g6dwljJAJ8

- Bill WB8ELK


-----Original Message-----
From: Hank Riley via Groups.Io <n1ltv@...>
To: GPSL <gpsl@groups.io>
Sent: Thu, Apr 19, 2018 5:11 pm
Subject: [GPSL] Superlative high speed video of small hydrogen balloons exploding

Can't give enough praise for this youtube from the University 
of Nottingham.





Everyone on this list should take a look at it. Certainly those 
who launch with hydrogen.

Pure hydrogen and the optimum stoichiometric mix (two H to one O) 
latex balloons filmed by a high speed camera showing exactly what's 
going on.

Narration by Sir Martyn Poliakoff CBE.  Distinguished professor and 
world class authority on chemistry; the recipient of many honors 
and awards.

Hank
____________________________









Superlative high speed video of small hydrogen balloons exploding

Hank Riley
 

Can't give enough praise for this youtube from the University 
of Nottingham.





Everyone on this list should take a look at it. Certainly those 
who launch with hydrogen.

Pure hydrogen and the optimum stoichiometric mix (two H to one O) 
latex balloons filmed by a high speed camera showing exactly what's 
going on.

Narration by Sir Martyn Poliakoff CBE.  Distinguished professor and 
world class authority on chemistry; the recipient of many honors 
and awards.

Hank
____________________________









Re: Hydrogen safety

Hank Riley
 

Joe,

It's probably a case of not having a groups.io password, which is
not necessary to just get email the way Mark set this group up.

Here's a sample of groups.io wording that mentions that situation:  
"Are you receiving emails from a Groups.io group but have never visited the
Groups.io website? You probably don't have a password set up yet."

To get a file you do have to have a password.  To just receive GPSL
mail, you don't need the password.  I'm guessing a lot of subscribers
here just read the email.

You probably know all of this, but I'm saying it for the benefit of others
who might not.

HR


From: Joe WB9SBD <nss@...>

That's Interesting.

How can you not be a member and be reading these e mails?

Joe WB9SBD



Re: Hydrogen safety

Joe WB9SBD
 

That's Interesting.

How can you not be a member and be reading these e mails?

Joe WB9SBD

The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com

On 4/18/2018 7:19 PM, jasonbunwin via Groups.Io wrote:
1. I tried clicking on the link and the page said I wasn't a member to see the article about the club that flew the hydrogen fueled balloon since the 80s.

2. From what I can gather in the conversation, the following safety measures should be taken when dealing with hydrogen:

     A. No smoking.
     B. No spark generating electrical equipment.
     C. Wear gloves. Non cloth to limit production of static electricity?
     D. Cloth cover on ground. That was a point made in the PARK launches.
     E. Don't let the balloon rub on clothing. Shouldn't do that anyway.
     F. FILL OUTDOORS!!!
     G. Use the proper regulator.
     H. Be on the lookout for a clear flame.
     I. Slowly release the gas. Don't open it "wide open".

3. Did I miss anything?

4. I am sharing with others in our planning process.

5. Is there anyone in this group from Oklahoma willing to help?

Sincerely,

Jason Unwin
KF5UEF


Re: Hydrogen safety

Hank Riley
 

I'll send you the file in a minute.  Mentioning that here and now
so that others won't have to bother and you won't get a bunch of
similar emails containing the file.

Not sure if it's the sort of thing that needs to be posted
and therefore received by everyone who has email delivery.


From: jasonbunwin via Groups.Io <jasonbunwin@...>
To: gpsl@groups.io
Sent: Thursday, April 19, 2018 12:19 AM
Subject: Re: [GPSL] Hydrogen safety

1. I tried clicking on the link and the page said I wasn't a member to see the article about the club that flew the hydrogen fueled balloon since the 80s.



Re: Hydrogen safety

Jason Unwin
 

PARK used a regular "Walmart" tarp most of the time. One of the members recommended cloth. Latex gloves were used all the time to not mess up the ballon. Cloth gloves were also used. Long sleeved clothes is a new one.

Jason Unwin
KF5UEF