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View Poll Results: How fast have you gone?

Voters
73. You may not vote on this poll
  • 0 to .25 Mach (190 MPH)

    4 5.48%
  • .26 Mach to Mach .5 (380 MPH)

    8 10.96%
  • .5 Mach to Mach 0.99999 (761 MPH)

    24 32.88%
  • Mach 1 to Mach 2 (1522 MPH)

    28 38.36%
  • Mach 2.01 to Mach 3 (2283 MPH)

    5 6.85%
  • Mach 3.01 to Mach 4.9999 (3806 MPH)

    2 2.74%
  • Mach 5+ (HYPERSONIC!!!)

    2 2.74%
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Results 1 to 30 of 35
  1. #1
    Join Date
    1st August 2011
    Posts
    900

    How fast have you gone?

    I liked the "How High Have You Gone" thread, so here's a similar one

    And please... post pictures!!!


  2. #2
    Join Date
    1st January 2003
    Posts
    4,289

    Re: How fast have you gone?

    Where is the speed of light option...(?) Cause I warped it and I've got pics!

    Tripoli 08705 Level III

    "He who fights with monsters should look to it that he himself does not become a monster, and if you look long into an abyss, the abyss also looks into you." - Friedrich Nietzsche


    www.dragonworksrocketry.com

    My Our Planet Profile

    MySpace

    I Don't Do Acronyms!!

  3. #3
    Join Date
    10th July 2006
    Posts
    650

    Re: How fast have you gone?

    How fast have I gone?
    0.1954985422741 Mach in the Quarter Mile (not my car).
    9.15sec @ 150.68mph
    -----------------
    Now for a serious question. What would be the best way to measure speed of a model rocket?
    For me this means LPR-comercial BP motors. Are there small enough electronics to make this feaseable?
    .................................


    David S. Mackiernan
    http://www.hotrodrocketshop.com/

  4. #4
    Join Date
    8th February 2009
    Location
    Oceanside, CA
    Posts
    2,732

    Re: How fast have you gone?

    Just a quick note of reference, your speeds listed for Mach aren't necessarily accurate. If you launch in say, Colorado as compared to say, California, the speed required to go Mach is going to be different due to different air thicknesses, environment, etc.

    That's all I've got.
    TRA 10762, Level 3

    12" Talon on a P build:

    http://www.rocketryforum.com/showthread.php?t=3797

    On Twitter: @Sparta_Chris

  5. #5
    Join Date
    20th August 2005
    Posts
    1,266

    Re: How fast have you gone?

    well, I'll be the first post that actually answers the question
    My latest flight reached mach 1.3.... or roughly a million miles per hour.
    Nate Luebbe

    I like rockets, and other things that fly...like kitties

    TRA# 10777, Level 2

    If at first you don't succeed, then you're not Chuck Norris

  6. #6
    Join Date
    18th January 2009
    Location
    Boulder
    Posts
    12,502

    Re: How fast have you gone?

    That M flight only hit M1.3? I would have guessed faster...

    Surprising - in that case, I've gone a bit faster than you.
    I've gone around 1100mph, or about mach 1.5

    Quarter mile straight up in 1.18 seconds at 1050mph
    NAR #84281 L3
    TRA #11233 L3

  7. #7
    Join Date
    1st August 2011
    Posts
    900

    Re: How fast have you gone?

    Quote Originally Posted by SpartaChris View Post
    Just a quick note of reference, your speeds listed for Mach aren't necessarily accurate. If you launch in say, Colorado as compared to say, California, the speed required to go Mach is going to be different due to different air thicknesses, environment, etc.

    That's all I've got.
    Darn Google calculator

  8. #8
    Join Date
    4th May 2005
    Posts
    1,965

    Re: How fast have you gone?

    I know I've broken mach with my 54mm minimum diameter rocket Whiplash on a K725 Wimpy Red.

    Here is link to a pic of taping the igniter into place.
    http://www.employees.org/~cls/rocket.../Img_6688.html

    And another of me hooking up the igniter leads.
    http://www.employees.org/~cls/rocket.../Img_6689.html

    Here is a pic of Whiplash on a it's first flight on a H148R.
    Aaron Stanley
    NAR# 84298 Level III
    TRA# 10834 Level III

    If it isn't an Aerotech, it isn't for me.

    "When the people fear their government, there is tyranny; when the government fears the people, there is liberty"
    -Thomas Jefferson

    People should not be afraid of their governments. Governments should be afraid of their people.

  9. #9
    Join Date
    20th August 2005
    Posts
    1,266

    Re: How fast have you gone?

    Quote Originally Posted by cjl View Post
    That M flight only hit M1.3? I would have guessed faster...

    Surprising - in that case, I've gone a bit faster than you.
    I've gone around 1100mph, or about mach 1.5

    Quarter mile straight up in 1.18 seconds at 1050mph
    I couldn't remember the exact speed, and I don't have the software on this computer to check the altimeter readings.... but that was the sim for a motor with roughly the same impulse and burn time. I remember the flight turning out very similar to, if not slightly better than the sims, so I'll go with that number until I can check it again.
    Nate Luebbe

    I like rockets, and other things that fly...like kitties

    TRA# 10777, Level 2

    If at first you don't succeed, then you're not Chuck Norris

  10. #10
    Join Date
    1st January 2003
    Posts
    4,289

    Re: How fast have you gone?

    It has been a while since I have taped an igniter in place with masking tape (or any other tape)...the last time I did, the rocket carried the igniter leads up a good piece before the tape let loose...burning the wires and clips of the leads in the exhaust on its way up...and the leads weren't mine. Needless to say, that pad was shut down till they were repaired.

    Nice looking rocket there, and I'm a sucker for a Red flame myself!

    Johnnie
    Tripoli 08705 Level III

    "He who fights with monsters should look to it that he himself does not become a monster, and if you look long into an abyss, the abyss also looks into you." - Friedrich Nietzsche


    www.dragonworksrocketry.com

    My Our Planet Profile

    MySpace

    I Don't Do Acronyms!!

  11. #11
    Join Date
    4th May 2005
    Posts
    1,965

    Re: How fast have you gone?

    Quote Originally Posted by Johnnie View Post
    It has been a while since I have taped an igniter in place with masking tape (or any other tape)...the last time I did, the rocket carried the igniter leads up a good piece before the tape let loose...burning the wires and clips of the leads in the exhaust on its way up...and the leads weren't mine. Needless to say, that pad was shut down till they were repaired.

    Nice looking rocket there, and I'm a sucker for a Red flame myself!

    Johnnie
    I end up loosing the tape up. If you look at the second pic how the tape is peeled back. Need less to say everything worked perfect. Thanks Johnie.
    Aaron Stanley
    NAR# 84298 Level III
    TRA# 10834 Level III

    If it isn't an Aerotech, it isn't for me.

    "When the people fear their government, there is tyranny; when the government fears the people, there is liberty"
    -Thomas Jefferson

    People should not be afraid of their governments. Governments should be afraid of their people.

  12. #12
    Join Date
    8th May 2005
    Posts
    815

    Thumbs up Re: How fast have you gone?

    Mach .19 on my stock '01 Honda Superhawk.
    Too young for Medicare, too old for women to care. :rolleyes:

  13. #13
    Join Date
    2nd July 2005
    Posts
    1,458

    Re: How fast have you gone?

    well i have gone faster, but never got there quite so fast as with a relatively light 38mm rocket on an H999. Sims suggest hitting M1 at about .27 second, 120' off the ground or so. I'm sure someone else has gotten to M1 faster but can't have been by too much. And I have another reload which I plan on trying in a shorter, lighter rocket with accelerometers on board later this fall.

    JS
    see http://www.rocketryforum.com/showthr...ighlight=h1000
    Pics are by CJL's dad, Ray, whose rocket pics have made quite a splash.
    NAR 13787, TRA 10581 L3
    NCR, Tripoli-Colorado, and C.R.A.S.H.
    RE-BAR x2

  14. #14
    Join Date
    21st January 2009
    Location
    Nashville TN USA
    Posts
    7,568

    Re: How fast have you gone?

    600 mph with a modified estes eliminator(maniac) on a rr g80.
    unfortunately all the fins sheared off at around 500'

    I'm going to try glassing the fins next round
    Andy

  15. #15
    Join Date
    18th January 2009
    Location
    Boulder
    Posts
    12,502

    Re: How fast have you gone?

    Quote Originally Posted by denverdoc View Post
    well i have gone faster, but never got there quite so fast as with a relatively light 38mm rocket on an H999. Sims suggest hitting M1 at about .27 second, 120' off the ground or so. I'm sure someone else has gotten to M1 faster but can't have been by too much. And I have another reload which I plan on trying in a shorter, lighter rocket with accelerometers on board later this fall.

    JS
    see http://www.rocketryforum.com/showthr...ighlight=h1000
    Pics are by CJL's dad, Ray, whose rocket pics have made quite a splash.
    Yep - you did beat me in accel there

    I hit mach in 0.635 seconds, at an altitude of 350 feet.
    NAR #84281 L3
    TRA #11233 L3

  16. #16
    Join Date
    18th January 2009
    Location
    Cocoa, Florida
    Posts
    1,070

    Re: How fast have you gone?

    oops .....I voted for how fast I personally have gone....after all this is the Coffee House.

    Now if I vote for how fast my last rocket went, it was a bit less than 17,000 MPH before deploying it's spacecraft.

    As far as my models.....my last Delta IV Scale clocked in at whopping 112.5 MPH (max) using 1 E9-4 and 4 B6-4 SRMs.
    Carl Campbell
    NAR #12821 - Level 1
    Clubs: ROCK (Orlando), NEFAR (Bunnell)



    Webstore: http://www.realspacerockets.com

    Kit Sales: JonRocket, Apogee Components, Sirius Rocketry and eRockets

  17. #17
    Join Date
    1st August 2011
    Posts
    900

    Re: How fast have you gone?

    Awesome replies! I see someone has gone hypersonic... and I want pics!

  18. #18
    Join Date
    19th January 2009
    Location
    Minnesota
    Posts
    790

    Re: How fast have you gone?

    680 knots in a T38 Talon was my personal best. Even got my hand on the stick for a minute or so. During AFROTC boot camp in college.
    Tim Barr

    NAR 51403 HPR Level 1

  19. #19
    Join Date
    18th January 2009
    Location
    San Diego
    Posts
    878

    Re: How fast have you gone?

    lol who went mach 5+?

  20. #20
    Join Date
    10th July 2004
    Posts
    879

    Re: How fast have you gone?

    How fast have my rockets gone? Nothing to brag about, roughly mach 1.3.

    How fast have I gone (you did say "you")?

    About 182mph on land before having to brake.



    Won't quite touch Hotrod Lincoln's driven car in the quarter though. Maybe when I get some bigger turbos.
    TRA #10414
    -----------------------------------------------------------
    "Great ideas often receive violent opposition from mediocre minds."

    -Albert Einstein

  21. #21
    Join Date
    18th January 2009
    Location
    North Andover, Ma
    Posts
    1,945

    Re: How fast have you gone?

    M1.1 And it was fun!
    Attached Images Attached Images  
    Mark Alterio

  22. #22
    Join Date
    3rd July 2007
    Posts
    34

    Re: How fast have you gone?

    I once put ten sugars in my coffee and actually traveled back in time

  23. #23
    Join Date
    6th November 2004
    Posts
    85

    Re: How fast have you gone?

    Got a additional question.
    how fast have you had one come in ballistic??

    I might have that one??
    back in 1995 the "Our" project was calculated to have gone in at over mach 1.6!!
    10" dia rocket liquified a 30' dia hole in the ROCK Hard plyer of the Black Rock desert.
    frank Kosdon did some math and estimated it went down aprox 75'+.
    We have the gps #'s anybody want to go mining:-)
    Just an old tid bit.
    Thanks Paul

  24. #24
    Join Date
    1st August 2011
    Posts
    900

    Re: How fast have you gone?

    Pictures??

  25. #25
    Join Date
    21st May 2006
    Posts
    866

    Re: How fast have you gone?

    Quote Originally Posted by rrocket View Post
    Got a additional question.
    how fast have you had one come in ballistic??

    I might have that one??
    back in 1995 the "Our" project was calculated to have gone in at over mach 1.6!!
    10" dia rocket liquified a 30' dia hole in the ROCK Hard plyer of the Black Rock desert.
    frank Kosdon did some math and estimated it went down aprox 75'+.
    We have the gps #'s anybody want to go mining:-)
    Just an old tid bit.
    Thanks Paul

    Hi Paul. How ya been, and good to see ya still around!!
    trying to remember what it was a member of the ouR project told me, (might have even been you Paul) Something to do with digging by hand and then using an excavator or a backhoe and still not being able to reach it..Hey Paul where can I find the Video of the on board of the flight? Remember it being on a DVD or something.

    Thanks

    Conway

    Not sure what the fastest incoming was but my best upward flight was Mach 2.2. Small rocket BIG motor. An AMW motor infact.
    Conway Stevens
    TRA#9567 L3
    TAP Member

    NAR#79707 L3

    Comming soon... Colorado Research Supply

  26. #26
    Join Date
    6th November 2004
    Posts
    85

    Re: How fast have you gone?

    Point 39 productions
    John Cagal?? From Ga. has all the fottage.
    Thanks Paul

  27. #27
    Join Date
    2nd July 2005
    Posts
    1,458

    Re: How fast have you gone?

    That sounds a bit optimistic--take a 3" min diameter rocket that weighs 50 lbs and has a supersonic Cd of 0.5, using the easily derived term. velocity eqn

    sqrt((2*m*g)/(Cd*area*pho)) gives a Vt of M1.13M; still hauling mind you, but to get to M1.6, the rocket in this case would have had to weigh 100lbs or so. ????
    Be curious on the details of said flight.
    NAR 13787, TRA 10581 L3
    NCR, Tripoli-Colorado, and C.R.A.S.H.
    RE-BAR x2

  28. #28
    Join Date
    6th November 2004
    Posts
    85

    Re: How fast have you gone?

    Denverdoc;

    The rocket was 21' long, 10.35" dia and weighed 660lbs @ lift off.
    285lbs of propellant, aprox R -20,000. 15 second burn time. Propellant ISP aprox 205.
    It had a balistic re entry from over 100k'( we only had a 100k ceiling:-)
    one estamate put alt. @ 123k+ feet?
    The rocket at impact weighed aprox, #370

    I think that is over 100lbs:-)))

    Mind you that was one persons estamate.
    The nose cone was 5/1 conical.

    3 fins with 15"cord , 18" root, and a 3" sweep= 12" at the end.

    All cut with a nice 3" diamond foil. max thickness was .25 at the core, and a .020 leading edge.

    So given that info, how about a second opinion?? I realize it can only be an estamate...
    Thanks Paul

  29. #29
    Join Date
    21st May 2006
    Posts
    866

    Re: How fast have you gone?

    John,

    As I know the project and the participants in the ouR project im pretty sure that Paul is correct or that the estimates are fairly close by those that made them.


    Conway
    Conway Stevens
    TRA#9567 L3
    TAP Member

    NAR#79707 L3

    Comming soon... Colorado Research Supply

  30. #30
    Join Date
    18th January 2009
    Location
    Boulder
    Posts
    12,502

    Re: How fast have you gone?

    Well, I can't know the exact details on air density, but assuming a cd of 0.6, that puts it at between M0.9 and M1.3 at impact if it was at terminal velocity. It could have been above terminal velocity however, as it would have fallen faster through the thinner air at high altitudes. It's hard to know for sure, but it was probably supersonic.

    NAR #84281 L3
    TRA #11233 L3

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