Here is a lunar lander design to solve some of the challenges to safely land on the moon. It is based on the Enclosed Rocket Nozzle design I proposed earlier. The idea is to encapsulate the large nozzle bell inside the rocket casing. In this case, the lunar lander casing. The lander will be an egg shaped tumbler that carries a robotic spider as the yolk.
The lander engine will be surrounded by the RP1 fuel. This will cool the nozzle effectively and pressurize the tank. The exhaust gas of the turbopumps of the engine will be pumped inside the propellent tanks to increase pressure. Additionally, these exhaust gasses will be used on the warm gas thrusters for navigation control while the main engine will not be gimbled.
The bottom heavy egg shaped design will reduce the touch down impact. Warm exhaust gas filled propellent tank casing will serve as a hard air bag on impact. After landing, the precisely placed explosives will crack the shell to reveal the spider robot explorer. The spider will operate with a nuclear battery and will communicate with the earth via the lunar relay satellites. I will not get into the advantages of using a spider bot over the stationary landers and wheeled rovers.
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