Overview:
Power Perch
The easiest way to install a Raven to your sled. Just screw it down and fly! -Provides a built-in connector for your Raven. Just tighten the Raven's screw terminals, plug in the battery, and the electrical connections are done! -Provides deployment charge electrical terminals for all 4 Raven outputs, with convenient double-wire terminals. -Includes a magnetically-activated arm switch works like magic to turn your Raven on or off. No need to align and drill your airframe for arm switches. -24 grams including altimeter and battery, about half the weight of a 9V battery alone. -Makes it easy to transfer a Raven altimeter between rockets (Raven altimeter, sled and quarter not included.) |
| Power Perch User's Manual.pdf |
Avionics Bay Kit
Assemble your world-class Av-Bay in 5 minutes! (Available in 24mm, 29mm, and 38mm. 38mm pictured. Altimeter not included.) Features: -Provides a built-in connector for your Raven. Just tighten the Raven's screw terminals, plug in the battery, and the electrical connections are done!-Provides deployment charge electrical terminals for all 4 Raven outputs, 2-3 of which are available at both ends of the Av-Bay, depending on size selected. Combine that with the Raven's ability to work with either end up, and you get the most flexible Av-Bay setup available. -Includes a magnetically-activated arm switch works like magic to turn your Raven on or off. No need to align and drill your airframe for arm switches. -Under 27 grams including altimeter, about half the weight of a 9V battery alone -Everything fits into a 2" long coupler. -The Featherweight Av-Bay's short length, low mass, and magnetically-activated arming make it the highest-performance Raven installation available. In May 2010, it was used to fly an I motor over 17,000 feet and a J motor over 22,300 feet! Included:
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| 38mm_instructions.pdf |
| 29mm_avbay_instructions.pdf |
| 24mm_avbay_instructions.pdf |
| 38mm_avionics_bay.step |
Download the 38mm av-bay step file
38mm Av-bay attachment kit
The original 38mm av-bay kit seals your Blue Raven and a battery inside a 2" long coupler tube, but how you connect the av-bay to the rest of your rocket is up to you. This upgrade kit makes that job much easier by including two harness attachment bulkheads, four new longer (3") aluminum threaded rods, and extra nuts. The harness attachment bulkheads have holes for threading a loop of Kevlar, and a central 1/4" hole that can be used for a t-nut, a 1/4" bolt with a low-profile nut, a charge holder, or aluminum push-off piston. |
Magnetic Switch
-Flexible input voltage range of 2.9 to 16 V -Low quiescent current draw of under 3 micro-Amps. This switch can be left in standby for over a week without significantly draining even a tiny 135 mAhr lithium polymer battery. -100% solid-state surface-mount components, professionally assembled in the USA -The output power state is indicated by a blue LED -Each switch is individually tested. Just connect the battery to the + and Ground terminals, and connect the altimeter power to the output terminal. The switch is fun to turn on and off even when it’s not arming a rocket, working with a wave of a magnet as if by magic. |
Screw Switches
Ultra reliable and of course, ultra-small. These screw switches are unique in that the underside of the screw head makes a reliable, preloaded contact to complete your circuit when it is snugged down. Mass: 0.25 grams Airstart safety switch: These switches are great for adding another series switch to airstart igniters for an additional layer of safety. In that application, close the switch when the rocket is vertical, after the electronics are working and the deployment charges are armed. The Raven will beep out the change in arm status for the airstart igniters. |
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Altimeter Battery
Small Raven-compatible battery for powering the altimeter and the deployment charges. Battery capacity and ranges from 130mAhrs to 160 mAhrs, and the original brand may vary. No cell protection is built in, which allows full current to fire the deployment charges. The MCX connector is compatible with all Featherweight av-bays, including the Power Perch, 38mm, 29mm and 24mm av-bays. Note that the higher-capacity versions of this battery are longer, which may require modification to, or removal of, the wooden battery restraints provided in the 29mm and 38mm av-bays. |
Tracker Battery + Adapter
A 400 mAhr Lithium Polymerbattery plus a connector adapter that works with the Featherweight GPS Tracker. The connector adapter can be installed horizontally as shown in the photo, or vertically. The tracker battery also plugs into the ground station enclosure for recharging in the field. The 400 mAhr capacity provides about 4-6 hours of tracker operation. This cell includes cell protection circuitry that prevents sustained high current discharge, making it good for powering a tracker but unsuitable for use driving deployment charges with an altimeter. |
Other Accessories available from the Featherweight Store:
- 1/4" nut driver. If you don't have one already, get one for the 29mm or 38mm av-bays. It makes assembly much more enjoyable.
- A much larger magnet, capable of 2" arming range
- Each of the kit components are also available separately.