Vacuum protected flight recorder memory
Various systems may benefit from appropriate thermal protection. For example, various flight recorder systems may benefit from a vacuum protected flight recorder memory. A system can include a memory core of a flight recorder. The system can also include an inner chamber housing the memory core. The system can further include an outer chamber housing the inner chamber with a vacuum between the inner chamber and the outer chamber. The system can additionally include a signal path from avionics equipment to the memory core through the outer chamber and the inner chamber. The system can also include a power path for the memory core through the outer chamber and the inner chamber.
1. A system, comprising:
a memory core of a flight recorder;
an inner chamber housing the memory core;
an outer chamber housing the inner chamber with a vacuum between the inner chamber and the outer chamber;
a signal path from avionics equipment to the memory core through the outer chamber and the inner chamber; and
a power path for the memory core through the outer chamber and the inner chamber;
wherein an outer surface of the inner chamber is coated with a silvering material configured to reflect radiant heat.
2. The system of claim 1 , wherein the inner chamber and the outer chamber are cylinders, concentric boxes, or concentric spheres.
3. The system of claim 1 , wherein the inner chamber is set off from the outer chamber by one or more insulating supports.
4. The system of claim 1 , wherein outer chamber comprises stainless steel or titanium.
5. The system of claim 1 , wherein an inner surface of the outer chamber is coated with a black material that is configured to absorb radiant heat.
6. The system of claim 1 , wherein the inner chamber comprises stainless steel or titanium.
7. The system of claim 1 , further comprising an underwater locater beacon.
8. The system of claim 7 , wherein the underwater locater beacon is located at one end of the outer chamber.
9. The system of claim 1 , further comprising:
a heat sink provided for the memory core and located within the inner chamber.
10. The system of claim 1 , further comprising:
a ballistic casing provided around the outer core.
11. The system of claim 10 , wherein the ballistic casing comprises an aluminum honeycomb structure.