STAND FOR TESTING RAMJET ENGINES Russian patent published in 2005 - IPC

FIELD: devices for testing ramjet engines.

SUBSTANCE: adjusting orifice is mounted in branch of stand air-intake device at leeward side of flying vehicle. Drainage branch is connected lower along the flow. There are measuring device and adjusting orifice inside drainage branch. Depending on angle of attack the adjusting orifice turns (shifts) in such a way that it overlaps part of flow area of branch which results to reduction in air discharge through that branch. Air discharge through branches simulating location at windward side of flying vehicle can increase (change) due to brake of coming air by case of flying vehicle. Corresponding increase in air discharge through those branches can be achieved due to change in total pressure in connected pipe-line, which pressure is provided due to adjustable stand orifice (regulating door) placed on line of supply pipe-line. Stand allows measuring parameters of combustion chamber and ramjet engine - as completeness of combustion of fuel, draught, specific pulse) when simulating flight of flying vehicle at different angles of attack.

EFFECT: improved precision.

3 cl, 2 dwg