25

Reaction control system jet interactions with a vehicle's aerodynamic flowfield can be counterintuitive. Here's a capsule simulation results graphic showing similar spreading effects below the jet as well as laterally (from the first link below). This paper states in reference to Apollo: Interference heating in the case of the yaw and roll jets covered ...


5

New Horizon's Integrated Electronics Modules are not pressurized. The spacecraft's thermal control system works by managing radiant and conductive heat transfer, not by convection. The approach taken by New Horizons is to retain heat like a thermos bottle – New Horizons is already in the vacuum of space where no conductive and convective heat will be lost ...


4

Unfortunately telemetry readings aren't shown on ISSLive.com (Tristan has actually pointed out to me there is no telemetry, which to me is a surprise, but there you go). See this analysis for the ISS. It is an analysis rather than a measurement and was performed in 1997 and so take it with a pinch of salt. Headline is -100 degF (-73°C) in eclipse to +150 ...


2

I think one thing to consider here is that the ISS's solar panels are not fixed and rotating with the station, they have their own rotating action (see ) so they always face the sun. The idea to have solar panels always blocking the sun from hitting the habitat (and probably more importantly the propellant tanks which likely ...


1

How much aerodynamic heating is left in the atmosphere, vs how much is retained/reabsorbed tl;dr: By necessity nearly all of it must be left in the atmosphere or radiated into space or towards Earth, and only a tiny bit could be absorbed. Using $E = 1/2 m v^2$ and an initial velocity of 7800 m/s, we see that each kilogram of a reentering body starts with ...


Only top voted, non community-wiki answers of a minimum length are eligible