Explore: Cold Flow Tests

that flows around the nozzle and back into the injector again. The KSR team performed a cold flow testing in October 2019 to verify the engine's flow rate

hot-fire flight test because of liquid oxygen leaks in the test apparatus. The ground firings and the airborne cryogenic gas flow tests provided enough

rocket engine. Like any other injector, its purpose is to ensure appropriate flow rate and intermixing of the propellants as they are forcibly injected under

engines must be ground-fired some number of times before launch. Even cold-flow tests, in which the propellants are not ignited, can leave residues. On the

full power. A subsequent full-power Kiwi B4A test on 30 November 1962, along with a series of cold flow tests, revealed that the problem was vibrations that

and hence the engine needs very little refurbishment. The LPSC began cold flow tests of engine prototypes in 2020. ISRO's current launch vehicles lack the

common of the pulmonary function tests (PFTs). It measures lung function, specifically the amount (volume) and/or speed (flow) of air that can be inhaled and

pallor) and becomes cold and numb. These events are episodic, and when the episode subsides or the area is warmed, the blood flow returns and the skin

turbulence between the flow and the overlying air, admixing and heating cold atmospheric air causing expansion and convection. Flows can deposit less than

will be evaluated in a cold-flow test with a nonnuclear engine mock-up to assess the mechanical integrity of the core. Such tests were conducted during