Does this mean three burns for the second stage, initial launch to 500-600 km, circularization in SSO, and pseudo-TLI or even four burns?Has any Falcon second stage done three burns? (Inject, circularization, disposal?)
Quote from: Comga on 10/07/2015 03:38 pmDoes this mean three burns for the second stage, initial launch to 500-600 km, circularization in SSO, and pseudo-TLI or even four burns?Has any Falcon second stage done three burns? (Inject, circularization, disposal?)Not sure about previous launches but Jason-3 just had 3 upper stage burns. Sort of flew under the radar because it came around the time that NASA got confirmation of the solar panel deployment from tracking in Alaska.
Quote from: deruch on 01/22/2016 04:33 amQuote from: Comga on 10/07/2015 03:38 pmDoes this mean three burns for the second stage, initial launch to 500-600 km, circularization in SSO, and pseudo-TLI or even four burns?Has any Falcon second stage done three burns? (Inject, circularization, disposal?)Not sure about previous launches but Jason-3 just had 3 upper stage burns. Sort of flew under the radar because it came around the time that NASA got confirmation of the solar panel deployment from tracking in Alaska.Unless you were paying attention and following along on NSF. We certainly read about it here.edit: OG2 demonstrated direct injection (single second stage burn) into a high inclination orbit around 600 km altitude. The flight in question for my post, taking the secondary payload from SSO to or near to TLI, could be done with two burns. However a three burn launch would be more efficient, resulting in a higher transfer apogee with a lower required delta V for the lunar mission, and now three burns have been demonstrated.
This seems to be one of the payloads for the flight, EU:CROPIS, a small greenhouse growing tomatoes under simulated Lunar and then Martian gravity.May 24, 2016 Project description at DLRFeb 5, 2016 The Space Show episode on EU:CROPISJul 8, 2014 Satnews article on the launch booking
I assume they are going to spin the payload.
DLR: Flight-model construction, yr late, now begun on Eu:CROPIS greenhouse sat; launch late 2017 on SpaceX Falcon 9.
Tweet from Peter B. de SeldingQuoteSpaceflight: 90-sat Sherpa tug on Q4 SpaceX launch is sold out. Space available for Q4 2017 on dedicated Falcon 9.Sun Synch Express now Q4 2017.
Spaceflight: 90-sat Sherpa tug on Q4 SpaceX launch is sold out. Space available for Q4 2017 on dedicated Falcon 9.
...In a letter dated July 1 to Congressional defense committees, Deborah Lee James, the secretary of the Air Force, said the Compact Ocean Wind Vector Radiometer, would launch in September 2017 as part of a rideshare mission. The launch is part of a previously undisclosed contract with Spaceflight Industries, which arranges rideshare launches....
This sounds like it might be on the Sun Synch Express...SpaceNews:
In an Oct. 11 interview, Curt Blake, president of Spaceflight, said he couldn’t provide the number of Terra Bella satellites that will fly on the mission, at the request of the company, other than “it’s more than one.”
While the announcement said that Terra Bella will be a “co-lead” on the SSO-A mission, Blake said that the company will be the only customer with that designation on the mission, giving it more control over the launch schedule.
SpaceIL, an Israeli group competing in the Google Lunar X Prize competition, had previously been named a primary payload for the flight, but Blake said their lunar lander will fly on another, unnamed launch.
Odd we all missed this blog post from spaceflight industries. http://www.spaceflight.com/model-preparation-sso/They reseved a plywood MDF mock-up of a new version of the CubeStack from LoadPath/Moog. My impression is that this rideshare adapter ring can accomodate six 6U cubesat deployers. That's 1.5x the capacity of the old cubestack design. It looks lighter weight then the old design, nice improvement....I assume the CubeStack has a 38.8" diameter and a height of about 10". ...
Quote from: Rik ISS-fan on 11/27/2016 11:32 amOdd we all missed this blog post from spaceflight industries. http://www.spaceflight.com/model-preparation-sso/They reseved a plywood MDF mock-up of a new version of the CubeStack from LoadPath/Moog. My impression is that this rideshare adapter ring can accomodate six 6U cubesat deployers. That's 1.5x the capacity of the old cubestack design. It looks lighter weight then the old design, nice improvement....I assume the CubeStack has a 38.8" diameter and a height of about 10". ...I'm not so sure that's the diameter, it looks bigger to me. The original CubeStack was sized for smaller launch vehicles. This one might be EELV adapter sized?
QuoteDLR: Flight-model construction, yr late, now begun on Eu:CROPIS greenhouse sat; launch late 2017 on SpaceX Falcon 9.https://twitter.com/pbdes/status/738646013427212289
We are well underway in preparations for our Dedicated Rideshare launch on a Falcon 9 (SSO-A). Right now, our first milestones have been met and everything is running according to schedule. Our engineers are completing dry runs on our integration activities, using our detailed mockups. We’ve done our first actuations of the system and have successfully operated the separation system with our avionics.The ESPA ring has arrived, and we will have a full engineering model to conduct tests. Other large structures will arrive to a new build facility this summer. We’ll keep you posted as we move into final assembly!