SSI-97 - Revision history

Bjing at 00:36, 8 December 2019

2019-12-08T00:36:46Z

← Older revision		Revision as of 00:36, 8 December 2019
Line 31:		Line 31:
	'''Balloon''': 0.8 mil polyethylene tubing, various topologies, width 2.5 m, various lengths and volumes. PVC of length approximately 12 inches and diameter 1/2 inch, as usual.		'''Balloon''': 0.8 mil polyethylene tubing, various topologies, width 2.5 m, various lengths and volumes. PVC of length approximately 12 inches and diameter 1/2 inch, as usual.

	'''Avionics''': Teensy 3.2 transmitting at adjustable intervals over Rockblock. Vent ~~control~~.		'''Avionics''': Teensy 3.2 transmitting at adjustable intervals over Rockblock. Vent controlled by TB6612 motor driver.

	'''Power''': 3 L91 lithium AA batteries.		'''Power''': 3 L91 lithium AA batteries.

Bjing at 23:04, 7 December 2019

2019-12-07T23:04:14Z

← Older revision		Revision as of 23:04, 7 December 2019
Line 4:		Line 4:
	\| designations = '''CY-8'''		\| designations = '''CY-8'''
	\| launch date = November 17, 2019		\| launch date = November 17, 2019
	\| launch site = ~~Brigantino Park~~, ~~Hollister~~, CA		\| launch site = Pigeon Point Light Station, Pescadero, CA
	\| launch coordinates = 36.~~849~~, -~~121~~.~~433~~		\| launch coordinates = 37.1827, -122.3923
	\| flight duration =		\| flight duration =
	\| flight length =		\| flight length =

Bjing at 23:02, 7 December 2019

2019-12-07T23:02:50Z

← Older revision		Revision as of 23:02, 7 December 2019
Line 17:		Line 17:


	'''SSI-97''' (project designation '''CY-8''') was the seventh launch of [[Cycloon\|Project Cycloon]] on November 17, 2019. Not a true launch, it was instead a series of ground tests of various properties of polyethylene tubing envelopes and the newly designed Cycloon vent mechanism. It was also the first return of Cycloon to Pigeon Point since the first launch.		'''SSI-97''' (project designation '''CY-8''') was the seventh launch of [[Cycloon\|Project Cycloon]] on November 17, 2019. Not a true launch, it was instead a series of ground tests of various properties of polyethylene tubing envelopes and the newly designed Cycloon vent mechanism. It was also the first return of Cycloon to Pigeon Point since the first launch, [[SSI-83]].

	==Project context==		==Project context==

			The original launch schedule for the quarter had called for a second altitude controlled flight in mid-November after a first test in October, [[SSI-93]]. When that first test became a ballast-only flight, the November flight would have been the first altitude-controlled flight. However, the outcome of SSI-93 demonstrated that Cycloon needed a better understanding of zero pressure balloons, a more rigorous pre-launch procedure, checklists, and better balloon envelope quality control. Thus, it was decided to conduct a series of ground tests for that purpose. Additionally, as the first version of a Cycloon vent mechanism was approaching completion, it was decided to test this mechanism on a ZPB envelope. Initially scheduled for '''November 16''', the tests were pushed back one day to accommodate schedules.

			The simple avionics for these tests were constructed on November 8, followed by the balloons on November 14. A working version of the vent was also produced by that date, and operational vent control was achieved and tested over RockBlock on that day. A final integration session installed the vent on November 16.

			The chief goals of these tests were to determine the mass capacity of the ZPB envelope, test the envelope at full volumetric strain, and obtain a rough estimate of vent rate. For details, please see the appropriate document in the Cycloon Google drive.

	==Configuration==		==Configuration==

Bjing at 22:39, 7 December 2019

2019-12-07T22:39:10Z

← Older revision		Revision as of 22:39, 7 December 2019
Line 17:		Line 17:


			'''SSI-97''' (project designation '''CY-8''') was the seventh launch of [[Cycloon\|Project Cycloon]] on November 17, 2019. Not a true launch, it was instead a series of ground tests of various properties of polyethylene tubing envelopes and the newly designed Cycloon vent mechanism. It was also the first return of Cycloon to Pigeon Point since the first launch.

	==Project context==		==Project context==


			==Configuration==

			'''Balloon''': 0.8 mil polyethylene tubing, various topologies, width 2.5 m, various lengths and volumes. PVC of length approximately 12 inches and diameter 1/2 inch, as usual.

			'''Avionics''': Teensy 3.2 transmitting at adjustable intervals over Rockblock. Vent control.

	~~==Configuration==~~		'''Power''': 3 L91 lithium AA batteries.

			'''Vent''': Cycloon zero-pressure

			'''Payload''': Half valbal-style polycarbonate cylinder within styrofoam enclosure. Mass 1.25 kg including ballast.

			'''Mass budget''': Various

	==Flight synopsis==		==Flight synopsis==

			Since this was a series of ground tests, no flight synopsis is available. Please see the test report in the Cycloon Google Drive.

	{{balloon-footer}}		{{balloon-footer}}

	[[Category: High Altitude Balloons]][[Category: Balloon Launches]]		[[Category: High Altitude Balloons]][[Category: Balloon Launches]]

Bjing at 09:40, 6 December 2019

2019-12-06T09:40:36Z

← Older revision		Revision as of 09:40, 6 December 2019
Line 1:		Line 1:
	{{balloon-launch		{{balloon-launch
	\| header = SSI-82		\| header = SSI-97
	\| img link =		\| img link =
	\| designations = '''CY-6'''		\| designations = '''CY-8'''
	\| launch date = ~~October 5~~, 2019~~, 11:00 PDT~~		\| launch date = November 17, 2019
	\| launch site = Brigantino Park, Hollister, CA		\| launch site = Brigantino Park, Hollister, CA
	\| launch coordinates = 36.849, -121.433		\| launch coordinates = 36.849, -121.433
	\| flight duration = ~~9h:28m~~		\| flight duration =
	\| flight length =		\| flight length =
	\| flight profile = ~~Standard zero pressure~~		\| flight profile = Ground tests
	\| landing time = ~~October 5, 2019, 20:38 PDT~~		\| landing time =
	\| landing site=~~16 km SSW of Alamo, Lincoln County, NV~~		\| landing site=
	\| landing coordinates = ~~37.144, -115.262~~		\| landing coordinates =
	\| last = 93		\| last = 93
	\| next =		\| next =

Bjing: Created page with "{{balloon-launch | header = SSI-82 | img link = | designations = '''CY-6''' | launch date = October 5, 2019, 11:00 PDT | launch site = Brigantino Park, Hollister, CA | launc..."

2019-12-06T06:53:08Z

Created page with "{{balloon-launch | header = SSI-82 | img link = | designations = '''CY-6''' | launch date = October 5, 2019, 11:00 PDT | launch site = Brigantino Park, Hollister, CA | launc..."

New page

{{balloon-launch
| header = SSI-82
| img link =
| designations = '''CY-6'''
| launch date = October 5, 2019, 11:00 PDT
| launch site = Brigantino Park, Hollister, CA
| launch coordinates = 36.849, -121.433
| flight duration = 9h:28m
| flight length =
| flight profile = Standard zero pressure
| landing time = October 5, 2019, 20:38 PDT
| landing site=16 km SSW of Alamo, Lincoln County, NV
| landing coordinates = 37.144, -115.262
| last = 93
| next =
}}

==Project context==

==Configuration==

==Flight synopsis==

{{balloon-footer}}

[[Category: High Altitude Balloons]][[Category: Balloon Launches]]