This is a cross section of the shield with simplified but principally correct geometry. The liquid methane is ejected through a single "pipe" directly over the most heated part of the shield. The methane vapor is ejected through a gas "trap" (View A) in radial direction towards the upper part - after many experiments this redirection of the vapor seems most logical, as it helps cooling the upper part without creating excessive force in the reentry direction. The temperature of the exhausted methane is still low enough - about 170-180 K





Comments

Post a Comment

Popular posts from this blog

Image
Surface temperature plot of Starship /tile protection/ top and bottom part with very mild reentry conditions - only 5000m/s speed, AOA=70 degree and  atm. pressure only 10 Pascals. As it is seen the shield temperature well exceeds 3000K in about 40-50% of the surface.
Read more
Image
 Starship shield upgrade which would decrease the thermal load in critical areas as flap hinges. As well this design makes the Starship aerodynamically stable during the reentry, which allows to replace the rear driven flaps with fixed wings as a part of the shield. The forward flaps would be enough to keep the angle of attack and perform the belly flop maneuver.
Read more