Conceptual design of an automatic fluid level controller for aerospace applications

In this paper an attempt has been made for the conceptual design of an automatic fluid level controller for cryogenic tank lucratively for aerospace applications. An ideal design technique of the low temperature multi-phase fluid level control system for estimating the boil-off rate and/or the flow rate to facilitating the estimation of the total quantity of effective fluid available for completing the mission based on the use of microcontroller has been presented. The proposed control system model is mainly composed of microcontroller, level sensor, temperature sensors, pump and relay. This system could estimate the actual fluid volume of the low temperature cryogenic fluid for the evaluation of the effective propulsive efficiency of the entire aerospace vehicle. The preliminary sea level test results, using water as the base fluid, show that the system model being proposed is able to monitor the liquid level very effectively and accurately for estimating the total volume of the fuel and oxidiser for estimating the operating time of the aerospace vehicle lucratively.