Search found 539 matches

by Hank
Sat Feb 18, 2006 2:31 am
Forum: Tools and Construction
Topic: Liquid Fueling Layout
Replies: 24
Views: 11346

re: Liquid Fueling Layout

Bruno. Your father studied compound eyes! How neat. Could I get a transcription of his stuff?
The Dragaonflys here are an object of my study.

Regards, Hank
by Hank
Fri Feb 17, 2006 9:06 pm
Forum: Off topic forum
Topic: Medical Applications of CFD
Replies: 0
Views: 1074

Medical Applications of CFD

Hello, Sportsfans- The following link was in one of todays newsletters.
It immediately replaced the Genome Project as most facinating medical advance/potential in my skull.

http://www.deskeng.com/Articles/Applica ... 10820.html
by Hank
Fri Feb 17, 2006 1:31 am
Forum: Valved pulsejet forum
Topic: About valved engines tailpipes...
Replies: 6
Views: 3810

re: About valved engines tailpipes...

This is really the only reason I can see for this engine to work any less effectively than, say, the Schubert or the Logan. At first glance, there is nothing particularly wrong with the layout. In fact, to naked eye its auxiliary exhaust looks more effective than that of the Logan. At least it point...
by Hank
Fri Feb 17, 2006 1:11 am
Forum: Valved pulsejet forum
Topic: About valved engines tailpipes...
Replies: 6
Views: 3810

re: About valved engines tailpipes...

Hello, Johansson- Better to picture the wave forms in understanding what the requirements for the two different engines are. I've attached a mean line drawing of the waves associated with the operation of the valved pulsejet engine. I don't have one for the Chinese type duct; I'll post one here when...
by Hank
Thu Feb 16, 2006 11:17 pm
Forum: Off topic forum
Topic: V1 clone
Replies: 45
Views: 17801

Re: re: V1 clone

But, woe betide you if you leave air bubbles inside. They do compress and can store an amazing amount of energy. If a burst happens with highly compressed air inside, that same water can wreak quite a bit of damage. Not recommended.[/quote] Hello- I've been doing a lot of reding lately in order to u...
by Hank
Wed Feb 08, 2006 12:05 am
Forum: Valved pulsejet forum
Topic: Any major flaws with this valve design?
Replies: 30
Views: 15277

Re: re: Any major flaws with this valve design?

Hello- Bill, solve the atmospheric dependence problem of these engines and you place in posterity will be assured. Regarding "throttle" of the pulsed combustion duct- Who is working on the variable geometry required for something thet would produce a smooth transition? Just metering the fuel isn't ...
by Hank
Tue Feb 07, 2006 9:46 pm
Forum: Valved pulsejet forum
Topic: Any major flaws with this valve design?
Replies: 30
Views: 15277

re: Any major flaws with this valve design?

Hello- Bill, solve the atmospheric dependence problem of these engines and you place in posterity will be assured. Regarding "throttle" of the pulsed combustion duct- Who is working on the variable geometry required for something thet would produce a smooth transition? Just metering the fuel isn't t...
by Hank
Sun Feb 05, 2006 3:48 am
Forum: Off topic forum
Topic: Challenging game
Replies: 4
Views: 2019

re: Challenging game

Ray- Thanks for notification of this facinating little time waster. I made it to level 5 before I added it to my internet favorites list.
Hank
by Hank
Fri Feb 03, 2006 7:34 pm
Forum: Valved pulsejet forum
Topic: V-1 on Display in Tucson
Replies: 6
Views: 3276

re: V-1 on Display in Tucson

Does anyone know of a location where a unit history for Flak Regiment 155 (III) would be? I've contacted the Germans, but they are silent on the question.
by Hank
Wed Feb 01, 2006 4:00 am
Forum: Off topic forum
Topic: V1 clone
Replies: 45
Views: 17801

Re: re: V1 clone

i noticed a possible mistake on the historychannel yesterday. they said that the v1 used a ramjet, and they described a ramjet, but the v1 was defiantely a pj. cud it be that the v1 can sustain ram operation and that confused them or was it just bad info? they showed pics of experimental high speed...
by Hank
Thu Jan 26, 2006 7:03 pm
Forum: Rocket forum
Topic: where can i get solid oxidizer?
Replies: 15
Views: 11054

re: where can i get solid oxidizer?

Hello- Hagent, the other 2% is probably a stabilizer such as Zinc. This same material is used in phase stabilized Ammonium Nitrate (my choice of oxidizer) and probably for the same reason. Zinc prevents the crystals from growing under changes of temperature and humidity. You won't find this material...
by Hank
Tue Jan 24, 2006 6:25 pm
Forum: Rocket forum
Topic: Future Trends of Rocket Propulsion
Replies: 1
Views: 2318

Future Trends of Rocket Propulsion

Hello- Retirees from NASA seem to be the driving force in the trend towards privitization of space travel. The following link contains information regarding the trend towards Plasma propulsion.

http://www.spaceref.com/news/viewpr.html?pid=18828
by Hank
Thu Jan 19, 2006 6:35 pm
Forum: Off topic forum
Topic: green Lasers! 15-125mW
Replies: 14
Views: 5333

re: green Lasers! 15-125mW

Hello- The most interesting, to me , recent use of the small lasers mentioned in the topic of this thread is in aviation. The current generation of digital autopilots now use lasers in conjunction with gyroscopes as rate sensors. The amount of weight, both mass and electrical, has decreased dramatic...
by Hank
Thu Jan 19, 2006 12:56 am
Forum: Gas turbine forum
Topic: Jumo 004 question.
Replies: 4
Views: 3538

re: Jumo 004 question.

Thanks.
by Hank
Wed Jan 18, 2006 7:06 pm
Forum: Gas turbine forum
Topic: Jumo 004 question.
Replies: 4
Views: 3538

Jumo 004 question.

Hello- I've got a question regarding the actuation of the Onion (Zweibel) that was part of the exaust duct of the Jumo 004 gas turbine engine. I haven't been able to conger up an image that shows the movement and actuating mechanism of this part. Its purpose was to control exaust pressure in order t...