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  1. #1
    Join Date
    9th February 2009
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    Rhode Island
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    A Question About Altimeters

    What's the lightest available altimeter that will record the length of the flight time as well as the altitude achieved?

    When all is said and done.......more will be said than done.


    Be witty. Employ sarcasm. But when an Internet forum member disparages another forum member who asks a question, seek him or her out and offer no quarter.

  2. #2
    Join Date
    19th February 2017
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    The world, probably
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    Quote Originally Posted by BigRiJoe View Post
    What's the lightest available altimeter that will record the length of the flight time?
    A stopwatch?

    Sent from my LGL44VL using Tapatalk

    NAR #104043, Jr L1 - 3/18/18
    www.crmrc.org

    Director of Impressive Titles, ArdIU Flight Computer Project:
    lithosphererocketry at gmail dot com

  3. #3
    Join Date
    5th December 2013
    Location
    MD
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    7,477
    Go here and click the link in post #1. I can't get there from work because it isn't characterized, but it contains a spreadsheet of altimeter comparisons.

    http://www.rocketryforum.com/showthr...mparison-guide

    John S. ---- NAR #96911 ---- TRA #15253 ---- MDRA #067
    L1, 3/15/14: Aerotech Sumo, CTI H133BS
    L2, 6/21/14: Giant Leap Vertical Assault, CTI J240RL
    L3, 3/12/16: MAC Performance Radial Flyer, CTI M1101WH
    Altitude: 13,028', L3 flight; Speed: Mach ???, L3 flight

  4. #4
    Join Date
    4th February 2018
    Location
    WDM, IA
    Posts
    16
    Probably one of the brands/styles used for competition. An Adrel or PerfectFlite's Firefly.

    Nate Smith
    Aspiring professional sonambulist
    TRA# 04507

  5. #5
    Join Date
    15th May 2016
    Posts
    2,369
    firefly doesn't log much.

    pnut might do it, I haven't seen data out of one http://www.perfectflite.com/pnut.html
    David McCann
    Dave's Rockets | My Flights
    URRG |URRF 4| Level 2 | TRA# 14210

  6. #6
    Join Date
    19th February 2009
    Location
    Auburn, WA USA
    Posts
    2,135
    The Altus Metrum MicroPeak will do that (if the flight is 43 seconds or less - that’s how much data it can record). You need the data interface device to get the data out and a computer. The software is available for PC, Mac and Linux.

    The PerfectFlite FireFly - WITH the accessory Field Data Display (http://www.perfectflitedirect.com/fi...-data-display/) reads out the flight time along with descent rate, coast time to apogee as well as apogee altitude and maximum speed in several different units.

    The PerfectFlite pNut will give you a full flight’s worth of altitude vs. time history - through an accessory cable connecting to a Windows or Mac computer. You get the time from the graph this software creates.

    The Adrel is the tiniest - it requires a Windows PC (and until they get the software signed a hack to bypass Windows security for any Windows versions newer than XP) to get the data out.

    Probably the lightest device that will give you both altitude and flight time without needing some other device with which to read the data is the Jolly Logic AltimeterTwo.
    Bernard Cawley
    NAR 89040 L1
    AMA 42160
    KG7AIE

  7. #7
    Join Date
    19th February 2017
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    716
    OK, thanks for clarifying. I wasn't sure what you were planning- I was guessing some type of flight duration event.

    If you just need altitude and time, I'd use a Firefly and a stopwatch. That won't get you much other data though.

    Sent from my LGL44VL using Tapatalk

    NAR #104043, Jr L1 - 3/18/18
    www.crmrc.org

    Director of Impressive Titles, ArdIU Flight Computer Project:
    lithosphererocketry at gmail dot com

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