Thursday, August 30, 2012

Hedley Lamarr

Members: Ken Biba, Casey Barker, Erik Ebert, Becky Green, Jim Green, Dave Raimondi, Tom Rouse, Steve Wigfield
Club: AeroPac

Altitude: 100,000+ '
Motors: N1000 to M685
Project Goal:  
This is our attempt to claim the "Carmack 100kftMicro Prize"  for an amateur flight above 100K'.  We are attempting to claim the prize using commercial motors in a certified configuration while carrying a functional science payload based on a commercial smartphone.  We adopted these constraints to further our goal of making 100K flights more accessible, repeatable, and affordable for the amateur community.  At the completion of the project, we will publish full documentation of our design and construction process and open-source our payload software.

The airframe is a two-stage, minimum-diameter design (see attached).  Construction is primarily of commercially-available fiberglass components with carbon-laminated fins.

Architecture:     Two stage minimum diameter - 4" booster to 3" sustainer
Motors:             Commercial ACPC motors.   Aerotech N1000 in booster staging to Aerotech M685 in sustainer.  24 second total burn time.
Total impulse:    21,650 ns
Length:             126"
Pad weight:       61 lbs
Avionics:          Raven+RDAS, Beeline GPS (70cm APRS), GoPro2 + WiFi BacPac replicated in booster and sustainer
Payload:           Smartphone+sensors with 2m APRS telemetry
Launcher:         12' rail
We will fly September 10-16, 2012.  As part of our "repeatability" goal, we intend to make multiple flights weather permitting.  We intend to webcast the video of the launch as well as real-time telemetry of the flight from the AeroPac web site.

1 comment:

  1. What is the M685? Is it a new moonburning motor for the 76/7680 case? I've seen no mention of it prior to now.