Search found 23 matches

by roland2001
Thu Dec 22, 2022 7:58 am
Forum: Ramjet forum
Topic: The Great Ramjet Challenge!!!
Replies: 311
Views: 241783

Re: The Great Ramjet Challenge!!!

Michael, hoping to have something pretty cool for this page in 2023! roland2001
by roland2001
Fri Jan 07, 2022 12:38 am
Forum: Ramjet forum
Topic: Diffuser data
Replies: 2
Views: 5197

Re: Diffuser data

Doesn't apply to straight ....the added "curvatures however are "supposed to" mitigate for the flow problems.
by roland2001
Fri Jan 07, 2022 12:33 am
Forum: Ramjet forum
Topic: Formulas from the Decker paper
Replies: 3
Views: 5134

Re: Formulas from the Decker paper

You have area and diameter reversed on your spreadsheet
by roland2001
Wed Jan 05, 2022 4:53 am
Forum: Valveless pulsejet forum
Topic: LOCKWOOD HILLER TIPJET?
Replies: 1
Views: 610

LOCKWOOD HILLER TIPJET?

Never would have thought that someone would try this. Hats off to the creative mind! To consider for a moment that these U-shaped babies would be used for rotary aircraft "tipjets," well to quote Vizzini ," is inconceivable!" Looked through this entire section and couldn't see that anyone had posted...
by roland2001
Sun May 31, 2020 1:39 am
Forum: Pressure jet forum
Topic: Axial (inline Gluey pressure jet engine)
Replies: 3
Views: 4987

Axial (inline Gluey pressure jet engine)

https://youtu.be/m65aLgQrwXA Test table started to move with the thrust augmenter attached Roland2001
by roland2001
Wed Sep 26, 2018 3:03 am
Forum: Pressure jet forum
Topic: Fixing the 130R
Replies: 1
Views: 5296

Re: Fixing the 130R

re the theory about the changes to the intake: 1) first, re the lengths....the fundamental wave created by the 2nd stage intake tube (the longest) is reflected back from the far wall of the combustion chamber "CC" and is the inverse (opposite) of the incoming wave. This situation sets up the appropr...
by roland2001
Sat Sep 22, 2018 6:26 pm
Forum: Pressure jet forum
Topic: Fixing the 130R
Replies: 1
Views: 5296

Fixing the 130R

Gluefixes.jpg Without going into allot of theory these are the charges I recommend: 1) Diameters of the "intake" tubes: starting with the second tube/intake: increase the INSIDE diameter to 3.5625" (3 and 9/16".) Decrease the minimum diameter INSIDE to 4.09375" (4 and 3/32"). or 4.0625" (4 and 1/16...
by roland2001
Mon Sep 10, 2018 2:44 pm
Forum: Ramjet forum
Topic: Subsonic Ramjet Design Project
Replies: 15
Views: 20153

Re: Subsonic Ramjet Design Project

Slap Hazard, am going to chime in here with just a few questions and comments.... 1 what are the areas of the inlet and the nozzle? 2 what is the area of your flame holder? 3 where and how are you injecting you fuel? 4 what are you going to use for fuel? 5 as Mike pointed out for a rectagular design...
by roland2001
Wed Jan 13, 2016 7:26 am
Forum: Pressure jet forum
Topic: Heads up re Glue 130R
Replies: 2
Views: 4877

Re: Heads up re Glue 130R

Hi Tufty, I've sent you a PM, but suffice it to say I'll post some static images first (once the shop finishes a vital part needed to finish building it). It should take 2-3 weeks to finish building her and get the images up here at Pulse-Jets.com, and then a week or so for the video (depending on t...
by roland2001
Mon Jan 11, 2016 3:06 am
Forum: Pressure jet forum
Topic: Heads up re Glue 130R
Replies: 2
Views: 4877

Heads up re Glue 130R

Hey folks, just a quick heads up re INSIDE diameters for your Glue 130R intakes: It seems that some different third stage throat diameters are being reported as the RQR plans don't give an exact measurement, but forces the purchaser (of the plans) to measure the distance then X 2. If the ID of the t...
by roland2001
Tue Jan 27, 2015 2:22 am
Forum: Pressure jet forum
Topic: Looking for plans? Look here.
Replies: 4
Views: 12723

Fixing the 130R

Going back to the original patent Gene based the claims for his engine while using round tubes for his sonic stack intake---> This being the case we can take a better look at the 130R. 75% of the area of the third intake requires the second stage to have an inside diameter of 3.625" and maybe + 1/64...
by roland2001
Sun Jan 04, 2015 2:46 pm
Forum: Valved pulsejet forum
Topic: Fixing the 130R
Replies: 0
Views: 6060

Fixing the 130R

Going back to the original patent Gene based the claims for his engine while using round tubes for his sonic stack intake. This being the case we can take a better look at the 130R. 75% of the area of the third intake requires the second stage to have an inside diameter of 3.625" and maybe + 1/64". ...
by roland2001
Sat Jan 21, 2012 5:29 am
Forum: Pressure jet forum
Topic: Fish Tail
Replies: 10
Views: 11390

Re: Fish Tail

Hey Bro Luc , i agree absolutely with your comment---nice to see you still on board with the site and pressurejet project(s) take care, kevin aka roland2001
by roland2001
Tue Jan 17, 2012 12:43 am
Forum: Pressure jet forum
Topic: Fish Tail
Replies: 10
Views: 11390

Re: Fish Tail

i think one of these is close to what Luc is saying ---but i've heard of two different reasons 1st ) makes the engine much easier to "throttle" --as the "fishtail" is of varying lenghts depending upon where one might measures it at any given throttle setting 2) the "fishtail" helps to elliminate the...
by roland2001
Tue Jan 17, 2012 12:20 am
Forum: Pressure jet forum
Topic: Gluhareff intake stage separation
Replies: 3
Views: 5824

Re: Gluhareff intake stage separation

PS i can show you how to do an "inline" as opposed to an "L" if you wish kevin