- #1
Islam Hassan
- 233
- 5
Is the pressure due to the hot gas exhaust stream on the inside walls of a rocket motor bell nozzle positive or negative?
Does the rocket exhaust exert a outward pressure on the nozzle walls due to the sheer volume of the exhaust gases or is the pressure a negative one due to the exhaust stream following a trajectory which is quasi-parallel to the nozzle walls?
It would seem in any case that at very high altitudes and low air densities, the pressure is positive since the exhaust stream fans out very broadly on its exist from the nozzle. What is the case at sea level however?IH
Does the rocket exhaust exert a outward pressure on the nozzle walls due to the sheer volume of the exhaust gases or is the pressure a negative one due to the exhaust stream following a trajectory which is quasi-parallel to the nozzle walls?
It would seem in any case that at very high altitudes and low air densities, the pressure is positive since the exhaust stream fans out very broadly on its exist from the nozzle. What is the case at sea level however?IH