US 12,278,416 B2
Gas injection system for plasma blackout alleviation studies
Humberto L. Caldelas, II, Severn, MD (US); and Wesley Harris, Cambridge, MA (US)
Assigned to Massachusetts Institute of Technology, Cambridge, MA (US)
Filed by Massachusetts Institute of Technology, Cambridge, MA (US)
Filed on Jul. 13, 2022, as Appl. No. 17/863,784.
Claims priority of provisional application 63/221,437, filed on Jul. 13, 2021.
Prior Publication US 2023/0019034 A1, Jan. 19, 2023
Int. Cl. H01Q 1/28 (2006.01); B64G 1/62 (2006.01); B64G 1/66 (2006.01); H01Q 1/00 (2006.01); B33Y 80/00 (2015.01)
CPC H01Q 1/002 (2013.01) [B64G 1/62 (2013.01); B64G 1/66 (2013.01); H01Q 1/28 (2013.01); B33Y 80/00 (2014.12)] 21 Claims
OG exemplary drawing
 
1. A test article for mitigating RF blackout in a hypersonic flow using electrophilic gas injection, the test article comprising:
a body having a forward end an and aft end, the body defining an exterior surface configured to be exposed to the hypersonic flow, the exterior surface having a nozzle integrally formed therein;
an ablator coupled to the forward end of the body, the ablator being configured to be directly exposed to the hypersonic flow and direct the flow around the body;
an RF window disposed in a recess in the exterior surface of the body, the RF window defining an exterior surface coextensive with the exterior surface of the body; and
a connector extending through the RF window and from a first opening in a first side of the recess to a second opening in a second opposite side of the recess,
wherein the nozzle is located upstream of the RF window with respect to a direction of the hypersonic flow after being deflected by the ablator.