|
Recovery Systems
for On this page, you'll find links to other sites that have background information about recovery systems for model rockets. Apogee Technical Publication #3 "Increasing the Descent Time of Rocket Parachutes." This easy-to-read report explains all the factors that determine how slow a parachute falls, and what you can be do to make them fall even slower. Technical Publication #4 "The Science and Beauty of Streamer Recovery." This publication explains how streamers, made from readily available materials, can be constructed to make them fall slower. This provides a great starting point for many simple science fair topics. http://www.quantumscientific.com/modroc.htmlDiscusses recovery systems, and some launch tips. http://www.nira.chicago.il.us/Leading_Edge/MayJun00.pdf Norm Dziedzic discusses the math and construction of hemisperic parachutes, and gives plans for making the first plastic hemispherical chute I've ever seen. http://www.sct.gu.edu.au/~anthony/kites/parafauna/chute_design/ Hemispherical Parachute design information http://www.pcprg.com/rocketre.htm Parachute design for rocket recovery http://www.angelfire.com/co/m2rules/paracalc.html Parachute descent rate calculator. Both Mac and Windows versions are available. http://www.pcprg.com/rounddes.htm Calculating descent for round parachutes. Something similar is also in the RockSim program (for Windows 95). http://inet.uni-c.dk/~dark/TechNotes/JF/Parach1.pdf Short introduction to recovery systems for rockets and possible implementations. The theory of motion in a parachute is derived taking account for the air resistance (Drag) and the gravitational force. Two different models for air resistance are considered. Finally a detailed design example of a recovery system is treated. Author: Jørgen Franck. Format: PDF, Size: 65KB. http://modelrockets.8m.com/guide/dualdeployment.htmlStrategies for building a rocket that deploys two parachutes (called dual deployment); a small one a apogee, and a main chute when the rocket nears the ground. This minimizes a big rocket drifting long distances. (high school level) Parachute Dethermalizers - These are devices that bring rockets down quicker so that they don't drift into the next country. Useful on smaller rockets (high school level) http://www.sci.mus.mn.us/sln/tf/p/parachutingpinwheel/parachutingpinwheel.html Spinning parachute toy. May be a cool recovery technique if you can get it into a rocket and deployed properly. Maple seed recovery technique. Plan for a simple rocket, similar to the Estes Tornado model. (middle school). http://www.lerc.nasa.gov/Other_Groups/k-12/TRC/Aeronautics/Maple_Seed.html NASA maple seed activity. http://www.cs.indiana.edu/hyplan/jwmills/EDUCATION.NOTEBOOK/journal/journal.html Maple seed homepage. Can be used as a type of helicopter recovery. http://www.the-bridge.net/~mach1/TWISTE~1.HTM Plans for a helicopter recovery rocket. http://members.aol.com/ricnakk/paracon.html Parachute design and construction, particularly big fabric or cloth chutes. http://www.paratech-parachutes.com/select/new-chute.html Guide to selecting the proper recovery parachute, particularly for high powered rockets. http://www.paratech-parachutes.com/references/ref-papers.html Biblography reference list for more technical information on parachutes. |