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Home / Archives / News Archive 2001 / PML announces 2 Quantum Leap kits, Daveyfire igniters, chute packing chart
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PML announces 2 Quantum Leap kits, Daveyfire igniters, chute packing chart |
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2001 Archived News by Public Missiles, Ltd.
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Thursday, May 31, 2001 |
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MT. CLEMENS, Michigan USA — PML is pleased to announce two new Quantum Leap kits, the availability of Daveyfire igniters and new parachute packing chart.
QUANTUM LEAP II KIT
The Quantum Leap has been a favorite two-stager for many experienced high power flyers, and with the development of our recent Interstage 3000 interstage coupler system, PML has now integrated that system into the Quantum Leap as well, making it into the Quantum Leap II. The QLII is essentially identical to the QLeap you may have seen flown or flown yourself, except for the addition of the Interstage 3000 system (and the addition of 1/2" to the overall length of the rocket because the IS3000 is 1/2" longer than the original interstage coupler). The old Quantum Leap is gone forever, the QLII replaces it (You can find more information on the Quantum Leap II in the webstore at http://www.publicmissiles.com/ in the Extreme Altitude section).
Also, PML highly recommends that you install an electronic parachute deployment system on the sustainer stage of the Quantum Leap II. This will help prevent the sustainer stage from coming in ballistic if the motor of the sustainer stage fails to ignite (which obviously will mean no motor ejection charge ignition!). Of course, everyone's design is different, so you may need to modify the kit with additional airframe or other parts not included. Don't feel comfortable with scratchbuilding your own electronic deployment system for the sustainer? Not to worry, read on...
QUANTUM LEAP 3000 KIT
So, not comfortable designing your own sustainer electronic recovery? No problem...not everybody wants or likes to scratchbuild, so PML has already done the hard work for you. Introducing the new Quantum Leap 3000 kit, with our CPR3000 electronic parachute deployment system AND the Interstage 3000 system already integrated into the kit! Of course any high-power two-stage kit is going to be capable of awesome altitudes, and PML has always wanted to bring their CPR system into the Quantum Leap, and now it's here. Everything you need for a CPR-equipped two-stage HPR monster is in this kit, ready to go (except of course, for electronics), including an even MORE detailed instruction booklet than usual.
So, want an HPR two-stager with a little room left for your own creativity in design? Get the Quantum Leap II, and design in your own electronic deployment system for the sustainer. Want a complete turn-key solution for one of the most exciting, high-tech, and high-performance kits available in high power rocketry today? Order up a Quantum Leap 3000! (You can find more information on the Quantum Leap 3000 in the webstore in the CPR-Based Kits section).
QLII AND QL3000 ADDITIONAL DATA
PML has also provided additional data on the Quantum Leap II and Quantum Leap 3000 on their website for you. There is a ZIP file of the RockSim files for the QLII and QL3k on the RockSim page of the website. The KitSpecs and Motor Recommendations Charts on the Specs Page have also been updated with the new Quantum Leap kits as well.
DAVEYFIRE N28F ELECTRIC MATCHES
PML News subscribers learned about one of their newest offerings, the Daveyfire N28BR electric match, in the last newsletter. It's great for CPR electronic (or scratchbuild electronic) ejection charge ignition, but isn't the best for motor ignition in onboard electronic systems. The N28BR simply burns too quickly to generate enough heat for reliable motor ignition. Now PML also carries the Daveyfire N28F electric match. The N28F is much better suited for onboard motor ignition, though it is advisable to dip the N28F in one dip of Magnelite igniter pyrogen to give it a little extra "oomph" to ignite a motor. PML recommends their Magnelite or Rapidfire igniters for ground-based motor ignition where current requirements aren't an issue. But for onboard airstart ignition of cluster motors or of second stage motors, they now carry the Daveyfire N28F (and the Magnelite pyrogen as well). See the Igniters Page in the webstore for info on all PML's igniter offerings.
PARACHUTE PACKING VOLUME MATRIX
One of the questions PML gets a lot is "how much room does it take to pack an X" parachute into PML Y" diameter tubing?" Well, they've now produced a Chute Packing Matrix and put it on the Recovery Page in the webstore to answer those questions for you. (They also put Tubular Nylon shock cord in there, too). So, next time you're scratchbuilding using PML components and need to figure out how much room to leave for the chute and TN, come to www.publicmissiles.com and get a copy of this handy little chart.
All the data in the chart was produced by folding the 'chutes as PML recommends in the link also on the Recovery page. (Though for some chutes you'll see a dramatic difference in length necessary from one size to the next larger one. This is because for the smaller diameter tubing, the chute was folded as recommended in the link, but then rolled tight to make a "hotdog" that would fit into the smaller tube. If this hadn't been done, the chute simply wouldn't have worked in that size tubing. For the larger diameters up from that size, the chute packed without the "hotdog" rolling, and were measured as they fit folded per the PML instructions). Of course, the specs given in the chart are approximate. You should leave a bit of "wiggle room" to make sure you have enough room in your project.
PML is always working to produce new kits, new systems, and provide new, useful information to you. Have fun, fly safe, and thanks for your support of PML! |
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