Engineering - May 2007

ok i want to make a model airplan out of styrofoam. but also i want to put and model rocket engine in it to make it fly. If i add weights to it to keep it balanced will it fly. what angles do the wings need to be and the tail. i am only 15 and want to get into aerospcae. any tips for me will help. i am going to base my model of a fight jet.

2007-05-03 09:41:54 · 1 answers · asked by bluedevhockey 1

Specifically what qualitys of a vaccume tube give it the rich sound that solid state audio equipment often cannot duplicate? Its important to note that both transistors and tubes can spec. out the same and still differ.

2007-05-03 09:05:57 · 6 answers · asked by John C 2

I'm having a debate with my buddy. The riddle he gave me was this: What can be measured, but has no length, width or height?

I think that AIR/Oxygen can be an answer to this question. I know there can be others, but he doesn't think it can be air/oxygen.

2007-05-03 08:21:54 · 10 answers · asked by BINYAMIN D 1

2007-05-03 07:39:50 · 9 answers · asked by pasaran472 1

definitions of abbreviations

2007-05-03 07:02:46 · 2 answers · asked by JOHN C 1

I want to design a small circit.
Basically I want a timer, which when activated, counts from 1 to any variable (in this case lets say 100).

Each count should be 60 seconds apart, so we get a Beep or Buzz every 60 seconds. At each interval, I want a small display to count how many buzzes we have had, so at 30 minutes the display would say 30!

Simple. Or not??

I've built a few Maplin's kits in the past and I'm pretty handy with a soldering iron, but I dont know anything about how to make things like this.

Any help would be great - or if you know of a pre-made time like this, that would also do.

2007-05-03 06:55:36 · 4 answers · asked by sambucaman 3

2007-05-03 05:44:15 · 7 answers · asked by Anonymous

its for an electronics project that im working on for use on a motorcycle. the box doesnt have to be submersible, just very very rain resistant :-)

2007-05-03 05:39:16 · 2 answers · asked by gpsnut2003 1

There comes an insulation with the wires in the market (normally plastic). My question is there any magnetic field present outside that insulation when current is present.

2007-05-03 05:05:22 · 3 answers · asked by Kasprov 1

like say, if a plane were to crash the pilot can flood the fuel tank with it and stop it from exploding or catching fire.

2007-05-03 04:41:06 · 6 answers · asked by eyepopping hideous female troll 4

I want to find out atmospheric pressure in different parts of the Mediterranean (a map) , during the Messinian salinity crisis 51/2 million years ago, when the Gibraltar strait closed up and all the water evaporated in 1500 years. ( it stayed dry for 100. 000 years, with periodical flooding)

2007-05-03 04:25:26 · 3 answers · asked by Boborator 1

2007-05-03 04:17:08 · 6 answers · asked by Anonymous 1

Suppose I know a static pressure at a valve when closed. Then suppose that the valve is opend slightly to give a flow rate and I manage to calculate the dynamic pressure at the valve.

Is the reduction in pressure at the valve calculated by taking the difference between the static and dynamic pressures? If not, can you point me in the right direction?

2007-05-03 02:49:41 · 4 answers · asked by Anonymous

Was it just to p*ss people off when they realise they only have a Straight-edged, slotted screwdriver in their toolbox?
If Philips is the superior design, why hasn't the Slotted variety been slowly phased out of existence?

2007-05-03 01:28:47 · 8 answers · asked by Parker128k 2

2007-05-03 01:17:09 · 6 answers · asked by T D 1

I asked a question last night about calcium sticking to pvc. Apparently it will. So my next question is how much build up on pvc can one expect compared to build up on steel.

For instance, say if 1/2" of scale would build up on steel in 6 months, how much would build up on pvc in the same time?

2007-05-03 01:08:05 · 1 answers · asked by John D 1

2007-05-03 00:58:36 · 2 answers · asked by zuumcentre 1

2007-05-02 23:23:33 · 2 answers · asked by MINTY! 1

I have found lots about the first electric steam irons invented in the 1950s, but I can't find when the modern day irons, made of plastic, were invented. Does anyone have any ideas?!

2007-05-02 21:49:39 · 1 answers · asked by Sarah C 1

Where can i get the realted information?

2007-05-02 20:02:15 · 1 answers · asked by 123 1

2007-05-02 18:44:55 · 4 answers · asked by mars 1

Yep.

2007-05-02 16:08:21 · 4 answers · asked by Pwnzer 4

I want full detailled answer including any and all sides that is related to that subject

2007-05-02 15:43:14 · 2 answers · asked by m.k. 1

I have to replace my beam over my garage door. It is a 16 ' wide openeing, 7 ' high. it is 2x4 construction.
It carries a approx 24 ' roof span and is load bearing the ends of the rafters. the rafters are approx 30' total span eave to eave.
I have access to a steel I beam that is well over 20 feet long,
10" high, 5 3/4 " across the flange, the flange is 3/8" think and the web is 1/4 inch wide. Will this beam work for my application?

The beam currently in place is a poorly constructed wooden structure, well below standard code, I beleve it is two 2x12" beams nailed together with plywood lining the inside. the neighbour two doors down built hbis house and his 12 ' door called for four 2/12's for his smaller span.

any help would be super !
Thanks
Derek

2007-05-02 15:38:52 · 2 answers · asked by Derek C 1

2007-05-02 15:32:52 · 6 answers · asked by noel d 1

I am planning on setting up a wind farm in Africa and planning to export it to Europe in cannisters or cylinders. Will I be able to get a buyer even though I am not connected to any of the national grids?

2007-05-02 15:26:51 · 3 answers · asked by UWEISE O 1

fuzzy logic

2007-05-02 15:08:07 · 2 answers · asked by Simon M 1

I NEED THE SIMPLE MANS MATHEMATICLE FORMULA,NOT PIE SQUARE AND SUPER BRAIN STUFF.BE MY HERO AND LET ME KNOW.

2007-05-02 14:32:01 · 9 answers · asked by curious_goods_antiques 2

Which one is harder, power engineering or signal processing?
I mean at graduate school level.

2007-05-02 14:00:55 · 4 answers · asked by college24footballathletic 1

This was on Mike and Mike in the Morning during the 'Golic Wastes Your Time' segment. I posted it on my IM at work as the useless fact of the day and one person wanted proof. Does anyone know why windmills everywhere in the world rotate counter-clockwise except in Ireland? Thanks!

2007-05-02 13:57:02 · 3 answers · asked by sportsgeekdom 1