[tccrockets] Re: Roll Control
- From: James Dougherty <jafrado@xxxxxxxxx>
- To: TCC chat <tccrockets@xxxxxxxxxxxxx>
- Date: Tue, 24 Mar 2015 22:28:41 -0700
Here's the ultimate in active stabilization:
https://www.youtube.com/watch?v=KBMU6l6GsdM
On Tue, Mar 24, 2015 at 5:49 PM, James Dougherty <jafrado@xxxxxxxxx> wrote:
> Sure, I'd like to take a look. Bring it to DA if you can!
>
>
> On Tue, Mar 24, 2015 at 5:44 PM, Steve Ainsworth <SAinsworth@xxxxxxxxxx>
> wrote:
>
>> The Vertical Trajectory system as flown at TCC uses a horizon sensor
>> for yaw and pitch and a solid state compass for roll. All control is
>> through the Basic Stamp, which just supervises the operation, turns things
>> on/off and sets sensitivity. It is set up in a 2.5" airframe. Let me know
>> if you would like to fly it. There was another, VERY COOL project flown at
>> TCC that used roll control fins but I am not sure of the status. I think
>> is was a 4" airframe with lots of electronics. Much more sophisticated
>> than mine. I do have some on-board video of several flights.
>>
>>
>>
>> Steve A
>> ------------------------------
>> *From:* tccrockets-bounce@xxxxxxxxxxxxx [tccrockets-bounce@xxxxxxxxxxxxx]
>> on behalf of Rob Diehl [rwdiehl@xxxxxxxxxxxxx]
>> *Sent:* Tuesday, March 24, 2015 10:51 AM
>> *To:* tccrockets@xxxxxxxxxxxxx
>> *Subject:* [tccrockets] Re: March Launch
>>
>> Fin alignment would be a big factor as would beveling. But the rail
>> buttons or any other protrusion could cause some (or counteract it) spin.
>>
>> If I recall correctly, the airflow around the tube wants to spin. I cant
>> remember if it is coriolis force or some other, but there was an article
>> about a guy making a multi tube rocket (scale Shuttle?) and was having
>> issues with the rocket disassembling on ascent. Longitudinal fences
>> corrected the issue.
>>
>> Some of my videos have the rocket stay stable, then spin one direction,
>> then spin the other direction. My camera was taped to the rocket and I
>> highly doubt it was done symmetrically. I assume air pressures pushing
>> around the nose cone at different speeds interacted with the airframe and
>> appendages at different points.
>>
>> I remember the roll stability project. I cannot remember his name
>> though. I thought he was using a STAMP processor for that.
>>
>> I am just working on getting them up and down again, in the correct
>> number of pieces. Active stabilization is above my pay grade at this point.
>>
>> Rob
>>
>> ------------------------------
>> *From:* Chris Attebery <chrisattebery1971@xxxxxxxxx>
>> *To:* tccrockets <tccrockets@xxxxxxxxxxxxx>
>> *Sent:* Tuesday, March 24, 2015 6:47 AM
>> *Subject:* [tccrockets] Re: March Launch
>>
>> My theories have ranged from fin misalignment to inconsistent fin
>> beveling to the way the cameras were mounted.
>> My DoorKnob only rotated about 90 degrees before apogee at October Skies.
>> The tube was pre-slotted and I used a router table to shape the edges of
>> the fins. Was it preparation or just dumb luck?
>> My TRA Level 2 Flight - 10/18/2014: http://youtu.be/ahpt81EWN40
>>
>>
>> On Mar 24, 2015 6:22 AM, "Richard King" <drrbk@xxxxxxxxxxx> wrote:
>>
>> I watched all of Dave’s flights and subsequent videos. What struck me
>> was how little roll I noticed on the flights (Nice fin alignment!).
>> However, even when the flights are that straight and with minimum roll,
>> there is still the “spinning movie” effect on ascent. Not as bad as most
>> that can leave one with motion sickness.... I was just wondering how many
>> people have specifically made a rocket with major anti-roll attributes? I
>> recall one guy a few years back (sorry I don’t recall your name, but wore
>> an official looking white jump suit) that was running experiments – one of
>> which was anti-roll. Just thinking how cool it would be to see a video
>> without any roll. I’m not trying to set the bar higher for others who
>> video their flights. All the videos are great. I’m just wondering if some
>> are working on that particular issue.
>>
>> RK
>>
>>
>>
>> *From:* aaron hagadorn <hagadornclassics@xxxxxxxxx>
>> *Sent:* Monday, March 23, 2015 10:03 PM
>> *To:* tccrockets@xxxxxxxxxxxxx
>> *Subject:* [tccrockets] Re: March Launch
>>
>> Wish I could have been there but prior event took priority sorry guys.
>> Cleaning party is a must and then prep for DA2015.
>> On Mar 23, 2015 1:12 PM, "Ben Sandoval" <yobenflstf@xxxxxxxxxxxxx> wrote:
>>
>> Great job to everyone who pitched in, wished I could have made it.
>> David nice video as always.
>>
>>
>>
>> On Monday, March 23, 2015 8:21 AM, Jimmy Franco <Aldocyber3@xxxxxxx>
>> wrote:
>>
>>
>> Nice David,
>>
>> I always enjoy watching your videos.
>>
>> Jimmy F.
>> TRA 12524
>>
>> *From:* James Dougherty <jafrado@xxxxxxxxx>
>> *Sent:* Monday, March 23, 2015 7:31 AM
>> *To:* TCC chat <tccrockets@xxxxxxxxxxxxx>
>> *Subject:* [tccrockets] Re: March Launch
>>
>> Very cool! Thanks David
>>
>> -James
>>
>>
>> On Mon, Mar 23, 2015 at 12:25 AM, David Robb <robbdm@xxxxxxxxxxx> wrote:
>>
>> Thanks all who LCO/RSO'd/setup/took down, I had a great time... while I
>> didn't launch half as many time as the "Green Machine"... I got four up and
>> back...
>> My Broken Arrow XP on an Aerotech L1040DM reached 10,157 ft.
>> Video of my flights.... https://youtu.be/h52qmImWxO4
>> ==================
>> David M. Robb
>> robbdm@xxxxxxxxxxx
>> ----- Original Message -----
>> From: James Dougherty <jafrado@xxxxxxxxx>
>> To: tccrockets@xxxxxxxxxxxxx
>> Sent: Sun, 22 Mar 2015 18:28:39 -0000 (UTC)
>> Subject: [tccrockets] Re: March Launch
>> Hey Folks,
>> Thanks for the great launch day yesterday! Special thanks to Richard
>> King and
>> Jimmy Franco for hauling the trailers and PP.
>> Next month, we plan to have a cleaning party - stay tuned for details
>> and thanks
>> again for everyone showing up and helping out - that's what makes a great
>> club!
>> -James
>>
>> On Fri, Mar 20, 2015 at 9:19 PM, James Dougherty <jafrado@xxxxxxxxx>
>> wrote:
>>
>> NOTAM is hanging, we go live at 16Z
>> See you all tomorrow!
>>
>> On Thu, Mar 19, 2015 at 5:28 PM, James Dougherty <jafrado@xxxxxxxxx>
>> wrote:
>>
>> Awesome! Thanks Mike
>> See you Saturday
>> -James
>>
>> Sent from my iPhone
>>
>> On Mar 19, 2015, at 10:08 AM, Michael Gentile <smmike@xxxxxxxxxxx> wrote:
>>
>> Hi all,
>> BAR will be on site for this Saturday's launch. The wagon is full.
>> Even have some Madcow killer deals.
>> Should arrive by 8am.
>> Mike @ BAR
>> Sent from my iPhone
>>
>> On Mar 19, 2015, at 12:57 AM, James Dougherty <jafrado@xxxxxxxxx> wrote:
>>
>> Right on! Thanks Jimmy
>>
>> On Wed, Mar 18, 2015 at 11:24 PM, Jimmy F. <Aldocyber3@xxxxxxx> wrote:
>>
>> I'll stop and hook them up to my truck on the way
>> out.
>> Jimmy F.
>> TRA 12524
>> *From:*James Dougherty <jafrado@xxxxxxxxx>
>> *Sent:* Wednesday, March 18, 2015 10:01 PM
>> *To:*TCC chat <tccrockets@xxxxxxxxxxxxx>
>> *Subject:* [tccrockets] Re: March Launch
>> Hi Folks,
>> Can anyone haul the porta-potty out to the launch
>> site?
>> Thanks!
>> -James
>>
>> On Wed, Mar 18, 2015 at 10:01 PM, James Dougherty <jafrado@xxxxxxxxx>
>> wrote:
>>
>> Hey Everyone,
>> NOTAM issued today.
>> Launch is a go for
>> Saturday!!!
>> -James
>>
>> On Mon, Mar 16, 2015 at 11:58 PM, James Dougherty <jafrado@xxxxxxxxx>
>> wrote:
>>
>> You know it! See you with the V2 this weekend :-)
>>
>> On Mon, Mar 16, 2015 at 10:15 PM, Richard King <drrbk@xxxxxxxxxxx> wrote:
>>
>> While March may be an “off month launch,” the weather should be
>> superb! For those thinking of flying high altitude, this may be the
>> best month to plan on doing so.
>> James, bring your V2 as is. Mine isn’t finished either, but
>> let’s compare builds.
>>
>> RK
>>
>>
>>
>> *From:*James Dougherty <jafrado@xxxxxxxxx>
>> *Sent:* Monday, March 16, 2015 10:03 PM
>> *To:*TCC chat <tccrockets@xxxxxxxxxxxxx>
>> *Subject:* [tccrockets] Re: March Launch
>>
>> Hey Everybody,
>> I hope everyone is looking forward to the
>> launch this weekend;
>> Richard is hauling the trailer - we're go for
>> Saturday!
>>
>> We got the porta-potties cleaned, if someone wants
>> to bring them
>> we can check them out and make sure they are in
>> good shape.
>>
>> I plan to survey all the gear so we can have our cleaning
>> party
>> next month and get everything ready for DairyAire.
>> See you all on Saturday!
>> -James
>>
>>
>>
>> On Tue, Mar 3, 2015 at 11:56 AM, James Dougherty
>> <jafrado@xxxxxxxxx> wrote:
>>
>> Excellent! Thank you Richard
>> -James
>>
>> On Tue, Mar 3, 2015 at 6:16 AM, Richard King
>> <drrbk@xxxxxxxxxxx> wrote:
>>
>> I should be available to haul the trailer.
>>
>> RK
>>
>>
>>
>> *From:*James Dougherty <jafrado@xxxxxxxxx>
>> *Sent:* Monday, March 02, 2015 10:40 PM
>> *To:*TCC chat <tccrockets@xxxxxxxxxxxxx>
>> *Subject:* [tccrockets] March Launch
>>
>> Hey Folks,
>>
>> Do we have any volunteers for trailer hauling this month?
>>
>> -James
>>
>>
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