to an altitude of 5.9 km at speeds over Mach 1, and Zuni, a solid fuel rocket capable of launching a heavier payload to an altitude of approximately 7 km, and reaching speeds of Mach 2.5. Launch vehicle development The aim of the AUSROC program is to develop a micro-satellite launch vehicle capable of being scaled up for use in heavier launch vehicles. AUSROC I The AUSROC I program commenced in 1988 with a group of undergraduate students in Mechanical Engineering at Monash University, who designed and built AUSROC I. It was successfully launched on 9 February 1989. The flight lasted one minute, reaching 3 km in altitude and 161 m/s. AUSROC I was a liquid-fueled rocket based on a modified Pacific Rocket Society design. AUSROC II AUSROC II was a larger pressure fed kerosene-oxygen bipropellant rocket that was developed in the 1990s. It was designed to reach an altitude of 10 km. The first attempt at launching an AUSROC II suffered a spectacular failure on the launch pad in 1992. The subsequent rocket, named AUSROC II-2 was successfully launched in 1995 from Woomera, although it did not reach its target apogee due to pressurisation problems with the LOX tank. AUSROC 2.5 AUSROC 2.5 was designed to provide an intermediate step between the AUSROC II and III programs. It uses the same size engine as the AUSROC III but with simpler and easier to implement cooling methods. The primary objective was to deliver a 10 kg payload to an altitude of 20 km and recover the rocket intact. AUSROC 2.5 was the principal subject of current developments efforts. It was projected to launch in late 2007. Prior to that, a key milestone was the ground testing of the propulsion subsystem. The project is currently seeking volunteers to assist with manufacturing, integration and testing. AUSROC III AUSROC III was designed to launch a payload of 150 kg to an altitude of 500 km. It was a sounding rocket that will incorporate active guidance for "live" steering, and a steerable parachute recovery system. AUSROC IV AUSROC IV was the final stage of the AUSROC program and consisted of five AUSROC IIIs, four for the first stage and one for the second stage. It was intended to place a small satellite (up to 35 kg) into a Low Earth Orbit. AUSROC Nano AUSROC Nano is a three-stage, liquid-liquid-solid orbital launch vehicle, designed to