41. The bleed air comes from the engines but is " bled " from the engine upstream of the combustor . 42. This air is further compressed by the centrifugal stage, and burned in a reverse-flow annular combustor . 43. The blades are responsible for extracting energy from the high temperature, high pressure gas produced by the combustor . 44. The glass component has the lowest melting temperature lower than temperatures inside the combustor of a gas turbine engine. 45. 855 parts were replaced with 12 3D-printed parts : frames, combustor liners, sumps, rotors. 46. Integrated boosters provide a more efficient packaging option, since the booster propellant is cast inside the otherwise empty combustor . 47. Ramjets utilize high-speed characteristics of air to literally'ram'air through an inlet diffuser into the combustor . 48. At exit from the impeller the air flowed forwards, then turned through 180 degrees to flow rearward through the combustor . 49. It carried a passive scramjet engine combustor module as a test-bed for demonstration of air-breathing propulsion technology. 50. The D-436 incorporated an updated, higher RPM fan, a lower emissions combustor , and new compressor sections.
