Dual deployment recovery will be used. Figure : The Mission Profile Chart includes the flight sequences for both stages and is described with more detail below Event Time [s] Altitude [ft] Velocity [mph] Triggering Condition Triggering Device 1 Launch 0.0 0 0 Ready to launch Launch Control 2 Separation 0.7 75 125 Booster burnout (negative acceleration) Flight computer 3 Sustainer burn 0.8 – 1.5 85 - 400 125 - 490 Stage 2 ignition delay elapses Flight computer (timer) 4 Sustainer 22.0 5168 0 Apogee Deployment altimeter (MAWD) Booster apogee, main deployment 11.0 720 0 Apogee Deployment altimeter (MAWD) Booster touchdown 76.0 0 0 - - 5 Descent drogue -60 Drogue deployment - 6 Main 64 500 -13 500ft reached Deployment altimeter (MAWD) 7 Sustainer touchdown 88 0 0 - - Table : Flight events, including time and altitude of each event, condition that trigger an event and a device that executes the action associated with the event. Removable shear pins will be used for both the main parachute compartment and the drogue parachute compartment. We shall use removable nylon shear pins of sufficient strength to prevent premature rocket separation. The size and number of shear pins will be fine tuned during test flights. The vehicle, or any un-tethered sections, will have a descent rate under the main parachute(s) between 17ft/s and 22ft/s, inclusive. Vehicle Recovery Parachute name Parachute size [in] Descent rate [ft/s] Ejection charge size [g] Booster
Successful post-flight analysis Describe Experimental Logic, Approach and Method of Investigation After a successful flight, we will take our bamboo payload to a laboratory for analysis. Figure 31: Sampling of bamboo for postflight analysis. The figure shows how the bamboo will be sampled for postflight analysis. For simplicity the procedure is shown with 4 bamboo plants and over 4 days. Day 1: collect sample from plant #1 (leftmost), measure cross section changes, bamboo strength characteristics and then use the plant for chemical analysis. Note that the observations are invasive and the analyzed bamboo section will be compromised by sampling and measurement. For this reason each bamboo plant that undergoes analysis cannot be included in later observations. Day 2: collect two samples from plant #2, first sample from the section of the plant that grew during Day #1, second sample from the plant section that grew during Day #2. Carry out the same set measurement as in Day #1, however this time for each sampled section. Remove plant #2 from further observations. Day 3: same as Day #2, but three sections are sampled (Day #1 growth, Day #2 growth, Day #3 growth). The outlined sampling procedure will allow us to observe entire history of developments in bamboo plant. However, it also requires large number of samplings and thus presents a major challenge. We plan to employ the entire team in the analysis and divide the work among four groups, each group having two members. The groups will rotate in the lab duties. Correlations G = f (A, T) Bamboo Growth in relation to Acceleration R = f (A, T) Bamboo Robustness in relation to Acceleration CR = f (A, T) Cross Section Changes (Radial) in relation to Acceleration CA = f (A, T) Section Changes (Axial) in relation to Acceleration D = f (A, T) Resulting Density of Bamboo in relation to Acceleration GE = f (A, T) Gene Expression in relation to Acceleration H = f (A, T) Hemicellulose Concentration in relation to Acceleration L = f (A, T) Lignin Concentration in relation to Acceleration Z = f (A, T) Rhizome Testings in relation to Acceleration