ANDREW PENG » Cool!

Nice view up there

andrew — Tue, 15 Nov 2011 13:37:23 +0000

Update: Edited the embed because the original video was removed.

http://www.youtube.com/watch?v=Ip2ZGND1I9Q

When commercial space tourism becomes attainable (but not necessarily affordable), I’m going to have to see this for myself.

If you put an airplane on a treadmill…

andrew — Fri, 16 Sep 2011 14:36:42 +0000

Estimate the mass of an Airbus A320 at about 170,000lb, start the accelerometer based dyno tool on the iPod touch, and wait for takeoff!

For the record, the estimation based on a 170000lb aircraft was 28596 hp

60′: 4.71 sec@18.5 MPH

1/8 mi: 13.89 sec@ 66.5 MPH

1/4 mi: 19.40 sec@94.2 MPH

A rather poor 1/4 mile time that most modern passenger sedans can outrun but keep in mind that while Mom’s Ford will stop accelerating at around 100MPH, this Airbus will continue accelerating until well past 500MPH.

A Legacy Concluded

andrew — Tue, 12 Jul 2011 05:09:35 +0000

[Source: arockalypse on Reddit / Flickr]

Be nice to your servers

andrew — Fri, 01 Jul 2011 14:00:16 +0000

http://www.youtube.com/watch?v=tDacjrSCeq4

Yelling at your servers can measurably negatively affect their performance. No joke. Make sure to treat your servers with respect, and keep it quiet in the datacenter!

Perhaps there is a “brown note” for disks (“rust note”?) – some harmonic that destroys their performance; although based on what we think is happening (disk heads being thrown off track), we think this has more to do with shock force than resonance. I’m sure there are disk vendor engineers out there who know all about this (Bryan links to a good reference in his blog entry).

[Source: Sun Microsystems Blog (now Oracle)]

TX2K11 Dinner Meet Pictures

andrew — Wed, 23 Mar 2011 00:07:36 +0000

After filling up my memory card with pictures of Supras after Supras, I gave up. Here are some pictures of the night meet later that evening.

TX2K11 Dyno Day / Show ‘n Shine Pictures

andrew — Mon, 21 Mar 2011 12:11:14 +0000

Here are some TX2K11 pictures from this past weekend. Many thanks to Hennessey Performance Engineering, Lonestar Motorsports Park, and all the events sponsors for an awesome weekend. Pictures of the night meet and videos are coming soon!

Joe Nemechek at HostGator Houston

andrew — Tue, 09 Nov 2010 03:08:29 +0000

Snapped off some shots in the morning before I came home

Fuzzy Dice

andrew — Tue, 21 Sep 2010 12:04:14 +0000

You have two standard three-dimensional cubes, each with six sides. On each side, you are allowed to inscribe one number. How do you represent all the ~31 days of the month, if each of two cubes have exactly the same six numbers inscribed on each side?

Edit: if you’re reading this syndicated on facebook, twitter, whatever, please post the answer as a comment on http://andrewpeng.net

Lego Mindstorms Rubik’s cube solver

andrew — Sun, 11 Jul 2010 05:18:55 +0000

http://www.youtube.com/watch?v=eaRcWB3jwMo

GT12 Turbocharged Lawnmower

andrew — Fri, 16 Apr 2010 22:32:28 +0000

http://www.youtube.com/watch?v=Gkh8qigeLZk