Do BLUNTNOSE SPACECRAFT Create Less Atmospheric Heat?

Question

Let me try this again :)
Scientists figured out that making spacecraft 'bluntnosed' helped dissipate the heat on their reentry. So the greater the drag, the less the heat load. Through making the reentry vehicle blunt, the shock wave and heated shock layer were pushed forward, away from the vehicle's outer wall. Since most of the hot gases were not in direct contact with the vehicle, the heat energy would stay in the shocked gas and simply move around the vehicle to later dissipate into the atmosphere.
This still adds heat to the atmosphere.
But does this add less heat than if the spacecraft were more streamlined and therefore less drag or does it create more heat to the atmosphere.
In Other Words, which objects entering the global atmosphere cause the most heat, fatter and blunt or smaller and streamlined.

Answer 1

Just before the spacecraft enters the atmosphere, it will possess some amount of kinetic energy, due to its speed, plus some amount of gravitational potential energy, due to its position above the earth.

The usual requirement for a spacecraft (as distinct from a missile) is that it arrives at the surface with something approaching zero energy in order to make a safe landing.

The only place all that energy can end up is in the atmosphere as heat, either directly, or by heat transfer from the body of the craft. The shape of the thing can only alter the dissipation/time profile of the energy transfer, not the total amount. If I were designing a spacecraft, my concern would be to ensure that it did not reach a temperature which would endanger the vehicle or its contents.

Answer 2

Chances are that a sharp-nosed spacecraft would become blunt-nosed in very short order, without the benefit of aerodynamic smoothness.