Search found 408 matches

by marksteamnz
Sun Jun 24, 2012 9:47 am
Forum: Rocket forum
Topic: Mobacken Racing - Rocket build - NOX and Methanol
Replies: 3
Views: 2374

Re: Mobacken Racing - Rocket build - NOX and Methanol

Fascinating!
Any translations furthur updates avalaible?

Cheers
by marksteamnz
Fri Oct 14, 2011 12:44 am
Forum: Rocket forum
Topic: Competition to launch a nano satellite into space……
Replies: 5
Views: 2691

Re: Competition to launch a nano satellite into space……

john Carmack's prize of $10,000 for the first gps documented amateur rocket over 100,000ft is more like it

http://www.armadilloaerospace.com/n.x/A ... ews_id=376
by marksteamnz
Mon Jul 25, 2011 7:29 pm
Forum: Jet Vehicles, All Types
Topic: "Jet" pack
Replies: 31
Views: 12099

Re: "Jet" pack

Thanks for your patience Dan, got it. I kept getting aerodynamic effects ie tail feathers on rockets confusing me. If hovering everything rotates round the COG quite happily. Light bulb on. The clever bit if you were DIYing a jet pack would be to integrate the laser ring gyro type auto stability fro...
by marksteamnz
Mon Jul 25, 2011 10:59 am
Forum: Jet Vehicles, All Types
Topic: "Jet" pack
Replies: 31
Views: 12099

Re: "Jet" pack

If the lift point ie nozzles are high above the COG won't that stabilize a flying whatever? Ruins the maneuverability of course. Hi Metiz, Just thought I would clear up some common misconceptions about Jetpack dynamics. Jetpacks are naturally unstable. There is no correcting force that will stabilis...
by marksteamnz
Sun Jun 19, 2011 3:39 am
Forum: Gas turbine forum
Topic: Axial project
Replies: 6
Views: 3290

Re: Axial project

Are you sure you didn't post this in the Instructables forum? http://www.instructables.com/ There's one in there and it also has zero chance of working with out many many hours and many many $ worth of modifications
by marksteamnz
Thu Jun 16, 2011 8:26 am
Forum: Jet Vehicles, All Types
Topic: "Jet" pack
Replies: 31
Views: 12099

Re: "Jet" pack

Of course there's always the newly invented Hover bike
http://www.gizmag.com/hoverbike/18813/picture/135528/

Newly invented? Yeah right.
Nothing like this http://en.wikipedia.org/wiki/Piasecki_VZ-8_Airgeep
by marksteamnz
Sun Jun 05, 2011 9:22 pm
Forum: Jet Vehicles, All Types
Topic: "Jet" pack
Replies: 31
Views: 12099

Re: "Jet" pack

The Martin Jet pack has just flown to 5000ft and been parachute recovered http://martinjetpack.com/Jolly good but this whole jet pack flying belt thing has me well exercised. First up I'd love to fly one I'd sign any waver / disclaimer and have at it. BUT There are a number of problems. Where are yo...
by marksteamnz
Sun Nov 14, 2010 10:15 pm
Forum: Rocket forum
Topic: Planning for a large NOX engine
Replies: 11
Views: 4087

Re: Planning for a large NOX engine

http://laffin-gasrocket.blogspot.com/

Latest from Laffin Gas. Carolynne persuaded me to write a summary of the technology they are using.

As for my having "an opinion worthy of respect." Maybe maybe not. I throw myself at the mercy of the court.

Cheers
by marksteamnz
Tue Oct 19, 2010 10:35 pm
Forum: Rocket forum
Topic: My first step for a rocket
Replies: 1
Views: 1528

Re: My first step for a rocket

Quote "Made of 60% kno3 and 40% sugar. (lots of places say to try this proportion first)"

And the one place that I provided a link to (http://www.nakka-rocketry.net/ see the sticky READ FIRST) which has ALL the details you need disagrees
by marksteamnz
Fri Sep 24, 2010 9:58 pm
Forum: Gas turbine forum
Topic: Large holes tesla turbine toy for micro GT
Replies: 1
Views: 2175

Re: Large holes tesla turbine toy for micro GT

Tesla turbines moving gases are considerably less efficient than a conventional staged fan or centrifugal impellers. On the hot end of a gas turbine they are a disaster as the thin webs and large holes make them structurally weak and very prone to warping / disintegrating.
by marksteamnz
Wed Sep 08, 2010 10:49 pm
Forum: Rocket forum
Topic: One person amateur rocket Denmark
Replies: 4
Views: 2203

Re: One person amateur rocket Denmark

Frozen LOX valve plus problems with the launch catamaran and the submarine mother ship. One blog says launch is postponed to June next year.
by marksteamnz
Wed Sep 01, 2010 7:13 am
Forum: Rocket forum
Topic: One person amateur rocket Denmark
Replies: 4
Views: 2203

Re: One person amateur rocket Denmark

Platform is heading out to the launch area.
by marksteamnz
Thu Aug 26, 2010 9:57 am
Forum: Rocket forum
Topic: One person amateur rocket Denmark
Replies: 4
Views: 2203

One person amateur rocket Denmark

http://www.copenhagensuborbitals.com/index.php

Now this is more like it. I like the fact they built their own submarine looks to be over 15m first.