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  1. #91
    Join Date
    11th April 2017
    Location
    Brisbane Australia
    Posts
    711
    Quote Originally Posted by afadeev View Post
    Nothing, except access to H-motors.
    In the US, you can buy only one (1) at a time for your cert attempt. I am not sure if the same rules apply in Australia.
    If you have a vendor on-site with ample inventory, this should not be a constraint either.

    a
    Ah ha! Thatís it. I knew there was something that made it harder.

    No dramas for me - vendor is onsite.

    Hmmm... the mind boggles.

    Reasonably new to rocketry and hailing from the land down under.. I speak metric... I know not of these feet and inches you speak of...

    QRS: #193
    AMRS: #148

    AMRS L1 (2018-03-18 - Mk4 Rocket Propelled Companion Pod)

  2. #92
    Join Date
    27th August 2011
    Location
    West Tennessee
    Posts
    2,776
    Quote Originally Posted by snrkl View Post
    Aspera II - going to 4796' (1462m) at Mach ~1.1


    Shock Cord snapped, NC with GPS and Altimeter3 recovered, airframe lost...


    Aspera III in planning - 3rd time is a charm!


    Congrats on nice build and successfully breaking Mach.

    Funny, in this hemisphere we use reloadable rockets and sometime single use engines.
    Sounds like this was a case of the opposite !

    Emphasize, I speak as a veteran of numerous less than optimal flights.

    High hopes for Aspera III

    It is amazing what you can do when you don't have a choice.

    Smart people learn from their mistakes.
    REALLY SMART PEOPLE learn from OTHERS' mistakes.

  3. #93
    Join Date
    11th April 2017
    Location
    Brisbane Australia
    Posts
    711
    Quote Originally Posted by BABAR View Post
    Congrats on nice build and successfully breaking Mach.

    Funny, in this hemisphere we use reloadable rockets and sometime single use engines.
    Sounds like this was a case of the opposite !

    Emphasize, I speak as a veteran of numerous less than optimal flights.

    High hopes for Aspera III
    LOL - I like it:

    snrkl: ďflying reloadable motors and disposable airframes since 2017...Ē

    Perhaps I just put the GPS electronics in the RMS motor casing, rear eject that for recovery , and make airframes designed to turn into confetti at apogee...


    Sent from my iPhone using Tapatalk Pro
    Reasonably new to rocketry and hailing from the land down under.. I speak metric... I know not of these feet and inches you speak of...

    QRS: #193
    AMRS: #148

    AMRS L1 (2018-03-18 - Mk4 Rocket Propelled Companion Pod)

  4. #94
    Join Date
    19th February 2017
    Location
    The world, probably
    Posts
    662
    Quote Originally Posted by snrkl View Post
    LOL - I like it:

    snrkl: ďflying reloadable motors and disposable airframes since 2017...Ē

    Perhaps I just put the GPS electronics in the RMS motor casing, rear eject that for recovery , and make airframes designed to turn into confetti at apogee...


    Sent from my iPhone using Tapatalk Pro
    Use a composite tube to hold the tracker, add fins builtin for extra strength... Oh wait, that's called a Mongoose

    Sent from my LGL44VL using Rocketry Forum mobile app
    NAR #104043, Jr L1 - 3/18/18
    www.crmrc.org

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

  5. #95
    Join Date
    11th April 2017
    Location
    Brisbane Australia
    Posts
    711
    Ok, so Aspera III is nearing completion.

    A few design changes since I and II:

    Shock cord is now 3mm Kevlar - if the cord breaks before the rocket Iíll be annoyed.

    Cord is attached through a hole in the tube coupler that Iíve reinforced with a cut engine block:

    Click image for larger version. 

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    As you can see Iíve made an ever so slight channel for the cord to pass on the outside of the coupler. Tied with a reef (square) knot oriented to make sure the cord heading up the airframe wants to go that way.

    New nose cone designed to have a 20mm longer shoulder so the electronics arenít quite as tightly packed:

    Click image for larger version. 

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    Same strengthening at the attachment point as last time - cardboard disks layers with epoxy inside and out:

    Click image for larger version. 

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    Holes are a little closer together this time - I didnít notice till I did the side by side.. not sure what effect that will have.
    Reasonably new to rocketry and hailing from the land down under.. I speak metric... I know not of these feet and inches you speak of...

    QRS: #193
    AMRS: #148

    AMRS L1 (2018-03-18 - Mk4 Rocket Propelled Companion Pod)

  6. #96
    Join Date
    11th April 2017
    Location
    Brisbane Australia
    Posts
    711
    I have fin fillets and launch rail guide to do now before painting.

    And here is my dilemma:

    I grabbed some 29mm 3D printed conformal rail guides from apogee.

    I know this rocket is small (510mm) and doesnít need two guides.

    Now I canít decide whether I should put the one guide Iím using on or behind the CG.

    My gut says between the CG and CP (pictured) but Iím having trouble thinking my way through the impacts. Iíve launched exactly ZERO rockets off a rail so far, so inputs are sought and welcome!!

    Click image for larger version. 

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    Sent from my iPhone using Rocketry Forum
    Reasonably new to rocketry and hailing from the land down under.. I speak metric... I know not of these feet and inches you speak of...

    QRS: #193
    AMRS: #148

    AMRS L1 (2018-03-18 - Mk4 Rocket Propelled Companion Pod)

  7. #97
    Join Date
    11th April 2017
    Location
    Brisbane Australia
    Posts
    711
    Updated paint job planned for Aspera-III:

    Click image for larger version. 

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    I have also spent a great deal of time creating an accurate picture of what it will look like when they press the launch button:
    Click image for larger version. 

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    ;^p
    Reasonably new to rocketry and hailing from the land down under.. I speak metric... I know not of these feet and inches you speak of...

    QRS: #193
    AMRS: #148

    AMRS L1 (2018-03-18 - Mk4 Rocket Propelled Companion Pod)

  8. #98
    Join Date
    15th October 2015
    Location
    Minnesota
    Posts
    1,367
    Quote Originally Posted by snrkl View Post
    ...

    I have also spent a great deal of time creating an accurate picture of what it will look like when they press the launch button:
    Click image for larger version. 

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    ;^p
    I think I have a video somewhere around of an Aspire on an F10 disappearing off into the sky like that. I think that pic is similar to the last time most Aspires are ever seen again.

    My gut says place the guide on the CG since CP is "somewhere else" while it's on the rail.
    NAR L1 - Optima 3" upscale/CTI H133 @ NYPower 20, May 28, 2016
    My YouTube channel

  9. #99
    Join Date
    11th April 2017
    Location
    Brisbane Australia
    Posts
    711
    Quote Originally Posted by Cabernut View Post
    I think I have a video somewhere around of an Aspire on an F10 disappearing off into the sky like that. I think that pic is similar to the last time most Aspires are ever seen again.
    i haven't lost a nosecone yet... (airframes, not so much...) EFminis are great! This time i know the NC base *AND* kevlar are strong enough - if the rocket gods want to fail me, it will have to be elsewhere on the bird... (I haven't shredded a fin or had a streamer failure yet, so I'm sure they're the next contenders...)


    Quote Originally Posted by Cabernut View Post
    My gut says place the guide on the CG since CP is "somewhere else" while it's on the rail.
    I ended up splitting it in three and putting one on the cg, one at the CP and one back in the drawer for the next rocket...
    Reasonably new to rocketry and hailing from the land down under.. I speak metric... I know not of these feet and inches you speak of...

    QRS: #193
    AMRS: #148

    AMRS L1 (2018-03-18 - Mk4 Rocket Propelled Companion Pod)

  10. #100
    Join Date
    11th April 2017
    Location
    Brisbane Australia
    Posts
    711
    Filling with CWF before sanding and painting tomorrow (hopefully - weather dependant...)

    Click image for larger version. 

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    Reasonably new to rocketry and hailing from the land down under.. I speak metric... I know not of these feet and inches you speak of...

    QRS: #193
    AMRS: #148

    AMRS L1 (2018-03-18 - Mk4 Rocket Propelled Companion Pod)

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