Haas 2B

Haas 2B is a single stage suborbital manned rocket. It has the capability to transport a crew of five into suborbital flight, inside a manned capsule. Haas 2B is designed to compete on the suborbital space tourism market.

The rocket is built primarily of composite materials and the liquid oxygen tank is made of 304L stainless steel. At the rear end is the Executor 2 rocket engine with a sea level thrust of 50,660 lbf (23,000 kgf). The engine is fueled with liquid oxygen and kerosene. On top of the rocket engine is the composite kerosene tank. The composite pressurization sphere is placed in the middle of the rocket airframe. The liquid oxygen tank is at the top of the booster. The service module is located just beneath the manned capsule containing five Venator engines. Four lateral engines can be used as an escape system, while the central engine can be utilized as a second stage motor to increase the maximum altitude for the capsule, after the booster separation.

Executor 2 rocket engine

The pressure fed Executor 2 rocket engine is specially designed for the Haas 2B suborbital rocket. It was designed as a moderate performance, highly reliable engine for manned suborbital applications.

The combustion chamber and the nozzle are built from composite materials comprising of two layers. The internal layer is made of silica fiber and phenolic resin, and the external one is made of carbon fiber and epoxy resin. The phenolic resin reinforced with silica fiber pyrolyzes endothermally in the combustion chamber walls, releasing gases like oxygen and hydrogen, leaving a local carbon matrix. The gases spread through the carbon matrix and reach the internal surface of the wall where they meet the hot combustion gases and act as a cooling agent. Furthermore, the engine is equipped with a cooling system that injects on the internal wall 10 percent of the total kerosene mass.