Offtopic: I think the tilt was done for aesthetic reasons. If you think about the hero images produced (fairing deploy, slowly rotating starman, etc) it seems clear that they carefully choreographed the exact camera angles, roll rates, etc, to get the earth framed properly in the shot. I'm pretty sure equal attention was paid to framing the car on top of the stage.
Since there is only boat with a giant net, could it be that fairing 2.0 is able to separate as some sort of clam shell and even close it self back up before coming down through the atmosphere? I vaguely remember Elon mentioning the aerodynamics of the half fairing and parachute was causing problems, a closed up whole fairing could maybe help solve that problem?
While it would not fit the current Falcon 9 design and flight profile, a first stage booster with a clam shell fairing containing both the second stage and the payload seems quite possible. The fairing mass and aerodynamic woulds seem to be well suited to flying back attached firmly to the first stage booster.
On ascent, the fairing's protect the payload (so it doesn't have to do so as a capsule usually does) from aeroloads.When there are no aeroloads, there is no reason to keep lifting the fairing, so it's jettisoned along the separation plane, so that nothing intersects the volume of the payload itself in the process.
Quote from: Space Ghost 1962 on 02/16/2018 07:31 pmOn ascent, the fairing's protect the payload (so it doesn't have to do so as a capsule usually does) from aeroloads.When there are no aeroloads, there is no reason to keep lifting the fairing, so it's jettisoned along the separation plane, so that nothing intersects the volume of the payload itself in the process.Nitpick: The fairing actually detaches when the free molecular heating imparted by the airstream is below about solar input - 1100W/m^2, not due to force as such.(F9 payload guide)
Quote from: speedevil on 02/16/2018 08:39 pmQuote from: Space Ghost 1962 on 02/16/2018 07:31 pmOn ascent, the fairing's protect the payload (so it doesn't have to do so as a capsule usually does) from aeroloads.When there are no aeroloads, there is no reason to keep lifting the fairing, so it's jettisoned along the separation plane, so that nothing intersects the volume of the payload itself in the process.Nitpick: The fairing actually detaches when the free molecular heating imparted by the airstream is below about solar input - 1100W/m^2, not due to force as such.Nitpick on the nitpick: depends on incident particle flux / solar wind (raises density) and velocity of vehicle, as well as ionized oxygen as well. Can also have corona discharge in odd cases too.Basically you want it to protect until there's nothing you need to be protected against.
Quote from: Space Ghost 1962 on 02/16/2018 07:31 pmOn ascent, the fairing's protect the payload (so it doesn't have to do so as a capsule usually does) from aeroloads.When there are no aeroloads, there is no reason to keep lifting the fairing, so it's jettisoned along the separation plane, so that nothing intersects the volume of the payload itself in the process.Nitpick: The fairing actually detaches when the free molecular heating imparted by the airstream is below about solar input - 1100W/m^2, not due to force as such.
Quote from: Espen on 02/16/2018 11:46 amSince there is only boat with a giant net, could it be that fairing 2.0 is able to separate as some sort of clam shell and even close it self back up before coming down through the atmosphere? I vaguely remember Elon mentioning the aerodynamics of the half fairing and parachute was causing problems, a closed up whole fairing could maybe help solve that problem?While it would not fit the current Falcon 9 design and flight profile, a first stage booster with a clam shell fairing containing both the second stage and the payload seems quite possible. The fairing mass and aerodynamics would seem to be well suited to flying back attached firmly to the first stage booster.Of course, this implies that the staging event happens high enough up that the fairing is no longer needed.
Quote from: Space Ghost 1962 on 02/16/2018 09:09 pmQuote from: speedevil on 02/16/2018 08:39 pmQuote from: Space Ghost 1962 on 02/16/2018 07:31 pmOn ascent, the fairing's protect the payload (so it doesn't have to do so as a capsule usually does) from aeroloads.When there are no aeroloads, there is no reason to keep lifting the fairing, so it's jettisoned along the separation plane, so that nothing intersects the volume of the payload itself in the process.Nitpick: The fairing actually detaches when the free molecular heating imparted by the airstream is below about solar input - 1100W/m^2, not due to force as such.Nitpick on the nitpick: depends on incident particle flux / solar wind (raises density) and velocity of vehicle, as well as ionized oxygen as well. Can also have corona discharge in odd cases too.Basically you want it to protect until there's nothing you need to be protected against.Further wrinkle: payload owners can (potentially for an additional fee) specify a different threshold should they so desire and theoretically it could be one that is not strictly based on or related to FMH.Quote from: freddo411 on 02/16/2018 04:40 pmQuote from: Espen on 02/16/2018 11:46 amSince there is only boat with a giant net, could it be that fairing 2.0 is able to separate as some sort of clam shell and even close it self back up before coming down through the atmosphere? I vaguely remember Elon mentioning the aerodynamics of the half fairing and parachute was causing problems, a closed up whole fairing could maybe help solve that problem?While it would not fit the current Falcon 9 design and flight profile, a first stage booster with a clam shell fairing containing both the second stage and the payload seems quite possible. The fairing mass and aerodynamics would seem to be well suited to flying back attached firmly to the first stage booster.Of course, this implies that the staging event happens high enough up that the fairing is no longer needed. ... snip ...If the suggestion was that "someone" (not SpaceX) could look into doing things this way--with a different vehicle at some point in the future--I might say okay. But, IMO, there's 0% chance that SpaceX tries it.
Official:https://twitter.com/SpaceX/status/964937069901447168QuoteTeam at Vandenberg is taking additional time to perform final checkouts of upgraded fairing. Payload and vehicle remain healthy. Due to mission requirements, now targeting February 21 launch of PAZ.
Team at Vandenberg is taking additional time to perform final checkouts of upgraded fairing. Payload and vehicle remain healthy. Due to mission requirements, now targeting February 21 launch of PAZ.
Awesome!Seems remarkably 'mundane' from some of the upthread discussions.No second level, no slide off fairing, no ...