Multiple fluid flow proportioning system

摘要

A multiple liquid flow proportioning system for use in reentry vehicles with transpiration cooled nose tips (TCNT). The basic system includes: a first reservoir containing coolant; a second reservoir containing the same type or a different coolant; a piston for forcing the coolant from the first reservoir and a piston for forcing the coolant from the second reservoir with both pistons integrated to form a unified structure movable in unison; and, a gas-operated mechanism to actuate the pistons and control the flow of coolants to the TCNT. The system provides for the simultaneous fluid cooling of the nose tip at high pressure and low flow rate and cooling of the nose-skirt area at low pressure and high flow rate with a single control device (e.g., valve).