Vern Estes Motor Patent

Here's a patent illustration for the Estes model rocket motor.

There has been an argument regarding whether it should be called a engine or a motor. On this patent it is called a "Toy Rocket Motor".

This patent was filed July 24, 1959 and approved March 24, 1964.
I don't quite understand the Figure 1 drawing. It looks more like a bottle rocket. Maybe it was to show a comparison between a fireworks bottle rocket and a model rocket.All drawn engines look to have a fuse in their nozzles.


Take a look at this early Carlisle patent.

In Figure 5: While it looks like a model rocket motor, there is a fuse outside the motor casing acting as a delay. It runs from the top of the propellant to the ejection charge.

From what I've read, some of the RDC (Irv Wait) engines had a fuse outside of the casing. The length of the fuse determined how long the delay was before ejection.

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/7    | توسط: فیروز قوچ داشی    |    | نظرات()

ASP Micro Wac Corporal Build Part 7 Tunnel

The thicker half round is cut to 2 1/4" long.
Both ends are tapered as shown.





It is glued 1/2" from the top of the upper tube.
This half round tunnel is already contoured to fit the curvature of the body tube!
I ran CA fillets down the seam like before with the fins.
The fillets were sanded smooth with 400 grit.

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/7    | توسط: فیروز قوچ داشی    |    | نظرات()

ASP Micro Wac Corporal Build Part 6 Gluing Fins

After the fins are lightly tacked in place, they are checked from the rear for correct spacing.
A CA fillet is applied with a toothpick tip.
Place a drop of CA on scrap paper. Dip the toothpick in the drop.
Drag that drop down the root edge joint making a fillet.

It might take two or three applications to build up a fillet or fill a gap. Any extra glue can be sanded down with 400 grit sandpaper.


It'd be a good idea to join the upper and lower sections together when gluing on the fins. This way you are assured the upper and lower fins are in line. Use that leftover half coupler to hold both sides together.


TIP: The instructions say to cut the lug and standoff in two and glue that to the body tubes. I decided to save a few steps and glue the lug to the standoff, then cut the longer glued assembly in two.
This way I could sand the ends of the lug and standoff flush with each other off the main body tubes.


All the fins and lugs are in place and in line with each other.

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/6    | توسط: فیروز قوچ داشی    |    | نظرات()

ASP Micro Wac Corporal Build Part 5 Gluing Fins

My build is a little out of sequence with the instructions.
This kit has the smallest fin marking guide I've ever seen.
Like other larger models, it's wrapped around the tube and the fin and lug locations are marked.



The kit includes a small plastic angle for extending the fin lines down the body tube.
It's a nice extra, the tube is too small for a door frame or larger aluminum angle.




I found it easier to use medium CA glue to place the fins.
A small drop was place on the back side of scrap sandpaper. The fin root edge was run through the drop.
This is a much easier way to get a small amount of glue on the root edge as opposed to applying it right from the CA bottle.

I don't want a lot of glue on the edge, the fins are small and hard to place straight on the small tube. With a little bit of glue, you could remove it if the placement is wrong the first time.
After you are certain the position is straight, you'll add a glue fillet in the next post.

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/6    | توسط: فیروز قوچ داشی    |    | نظرات()

Bra skydd mot mygg

Besväras du av myggen och andra smådjur, så är Aloe Heat Lotion bra att smörja in sig med. Även djur kan smörjas in för att mota bort dem med.
Hästägare brukar smörjer in hästarna innan träning för att förebygga skador.


Används även av massageterapeuter.
Är man förkyld är det skönt  att smörja in sig med den på bröst och rygg. Även på halsen om man har ont i den.

Den är skönt att massera in sig med  om man har ont i muskler och leder. Bra att göra det innan man ska träna för att förebygga skador. Innehåller Lignin som gör att det är djupverkande och även om man duschar sig ca 20 minuter efter man har smort in sig, så fortsätter det att verka.
Innehåller: Aloe Vera, mentol, olja från Eucaluptos, sesam och aprikoskärnor.

Hoppas ni haft en bra midsommar.

Midsommar kom och gick utan större åthävor här. Vädret var inte det bästa, så det gjorde inget att vara inomhus. I går kom äntligen solen och det var så mysigt att kunna sitta ute och äta.

I dag börjar sönerna att sommarjobba i några veckor. Själv har jag inget inplanerat i sommar och det känns ganska skönt. 

Kram

Strömma 

منبع:
http://lojrom-vittvin.blogspot.com

نوشته شده در تاریخ 1390/04/6    | توسط: فیروز قوچ داشی    |    | نظرات()

Malia feat. Eric Truffaz - Yellow Daffodils



I readdress my friend’s message, who sent this to me:

“To those able to perceive Beauty”.

منبع:
http://irina-alicelovers.blogspot.com

نوشته شده در تاریخ 1390/04/5    | توسط: فیروز قوچ داشی    |    | نظرات()

Nose Weight Comparison

Two years back I entered the EMRR Box O' Parts Contest.
I received a box full of spare parts and a few rocketry memories - a few things I hadn't seen for years.

One find was an old Estes lead nose cone weight, seen on the left.
This was the same style of weight I first saw in a Estes Wac Corporal kit. The outside diameter is 11/16" and fits inside a BT-20 body tube. In the 1969 catalog it was #651-NCW-1 and sold three for a quarter.

You can't get these lead weights anymore, I was curious to see how the available Semroc washer weights compared.
On my cheap scale, the Estes lead weight was 0.14 oz.
(this was slightly heavier than the catalog weight of 0.12 oz.)
It took three Semroc washer weights to get close at 0.15 oz!

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/5    | توسط: فیروز قوچ داشی    |    | نظرات()

ASP Micro Wac Corporal Build Part 4 Nose Weight

The Kevlar lead weight is tied to the split weight.
The weight is crimped around the line.




The half coupler holds the weight at the top of the upper body tube, beneath the nose cone shoulder.

With the coupler, weight and Kevlar in position, the base of the nose cone is inserted and pushes the weight into the correct position in the tube.
Pull the nose cone out, and apply glue to the weight and inside tube.

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/5    | توسط: فیروز قوچ داشی    |    | نظرات()

À Paris_Yves Montand à l´Olympia

منبع:
http://irina-alicelovers.blogspot.com

نوشته شده در تاریخ 1390/04/4    | توسط: فیروز قوچ داشی    |    | نظرات()

LAUNCH! Schoolyard June 24, 2011

Even though the build is still ongoing, the ASP WAC CORPORAL is actually finished. I was anxious to fly it.
This morning about 7:30 a.m. it did with a MicroMaxx engine.
Straight as an arrow up to about 75 feet.
The mylar streamer did deploy without problem and no melting. The inset picture shows I stuck the nose cone on landing.
There was only a bit of ejection soot in the clear tube above the engine. Most of it was cleaned out with a trimmed Q-Tip.





My CORKSCREW wiggled it's way up to 350' with a A10-3t engine. I had a rare eject of the friction fit engine, but the streamer did eject.







A Quest A6-4 engine had a throaty roar compared to the other Estes engines launched today.
Again my Semroc ASTRON had a wiggle off the launch rod and was off vertical during thrust.
At an estimated 300' up, the reefed parachute ejected fine and the five MPH wind brought it back close to my tripod launcher.





Last up was my indestructible CHEROKEE T carded downscale with an MPC 1/2A3-5t. I'd estimate the altitude at 425 feet. This is one of those rockets you can't bend, dent or lose. It just keeps showing up in my launch box.





Also Flown:
The Micro GALAXY GUPPY with a MMX engine. Good flight with nose blow recovery.

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/4    | توسط: فیروز قوچ داشی    |    | نظرات()

ASP Micro Wac Corporal Build Part 3 Fin shaping

The coupler is cut in two. You'll only use 1/2 of the coupler in the build.
The fins were gang sanded to be sure they were all the same size.

This is all three of the upper fins on a sanding block.
The Wac Corporal fins are slightly rounded on the outside corners.
I rounded all three fin corners at one time for consistency.
Be careful, it's easy to take too much off - I did.




Here's six lower and upper stage fins after shaping and rounding.

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/4    | توسط: فیروز قوچ داشی    |    | نظرات()

ASP Micro Wac Corporal Build Part 2 Fins

The nose cone was a little tight in the upper tube. It needed a little sanding for a better fit.

I took a few minutes to true it up, the sharp tip was a little out of round. No fault of ASP, turning nose cones this small is difficult. All the parts are of high quality.

The instructions recommend cutting out the fin pattern and tape it to the flat styrene using double sided tape. I extended the fin outlines on the instruction sheet and taped the styrene to the instructions.


I didn't try to cut all the way through the styrene. I went about half way through and removed it from the instruction sheet.
The pieces were cut the rest of the way through with my knife and straightedge.

The body tubes had a very small spiral seam. It was filled thinned wood filler and sanded smooth.
The nose cone got two coats of sanding sealer and was sanded smooth.

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/3    | توسط: فیروز قوچ داشی    |    | نظرات()

Estes Saturn V Specs and Pics

Andrew B. emailed me about my build and asked for some Saturn V finished specs.
Here's my stock build measures up next to the Estes numbers from the box spec card:

Estes finished weight: 11.0 oz. (empty, no engine or wadding)

My build finish weight: 11.53 oz. (empty, no engine or wadding)
My build flying weight: 13.21 (D12-3 engine and eight squares of Estes wadding installed)

My center of gravity (loaded for flight balance point) is 15 1/8" from the rear.

The height of my Saturn V build is the same as the Estes kit spec. at 43.25" tall.


Remember, I added a Monokote trim piece around the service module tube. This shouldn't be much heavier than a coat of silver paint. I probably build heavier and use a little more spray paint than the average builder would.
In the 1974 Centuri Catalog, their Saturn V (close to this reissue) weighed in at 9.2 oz.
In the 1974 Estes Catalog, their Saturn V weighed in at 9.9 oz.
In the same 1974 Estes catalog, the maximum lift-off weight for a D12-3 engine is 14 oz. So my Saturn, weighing in at 11.53 oz., should be fine with a D12-3 engine.
That is - if I ever get the nerve to fly it!

Parting shots:

High end and low end!

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/3    | توسط: فیروز قوچ داشی    |    | نظرات()

ASP Micro Wac Corporal Build Part 1 Parts

This is one of the three MicroMaxx kits I bought in a lot on EBAY.
Here's all the parts:

Like the ASP Micro Jayhawk, there is no balsa in the kit. The nose cone is hardwood and all fin and details are white styrene plastic.

The top half is the Wac Corporal that most are familiar with. This model has a Tiny Tim booster. It is a single stage MMX powered kit. At ejection, the separation point is between the two stages.
Note the clear plastic tube. That simulates the open area between the two stages and gives support to the thin half round supports.
The mylar streamer is optional, the instructions state it'll aid in visibility.

Here's some kit pieces of interest:
The lead shot nose weight is in the middle of a long piece of Kevlar.
The bigger half round piece will be the tunnel.
The very skinny half round piece will be the supports between the stages.
You'll only use half of the brown coupler. It holds the weight high in the upper body, right beneath the nose cone shoulder.
The double stripe in the decals help with the color separation and when placed give the correct spacing of the black bands.

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/2    | توسط: فیروز قوچ داشی    |    | نظرات()

S.D. Xanadune Build FINISHED!

This model was a great break after the Saturn V build.
I was ready for something different and this certainly fit the bill.

I have to give credit to whomever the designer was. There are a few great innovations but other ideas fall short.

The laser cut parts fit together very well, but the burns weren't clean.

The integrated baffle/centering ring assembly was interesting. (The instructions still call for a single square of wadding on top of the baffle.)

The round shock cord seems stiff and too short for the model.

The provided parachute shroud lines were half the length they should have been.

The engine lock ring is new to me and works well.

There is very little room for the parachute.

I can't quite figure out the reasoning behind the "nasal strip" tape strips and plywood reinforcements.

Angled spin fins. The wood grain wasn't parallel to the leading edge.

Still, a welcome change from the ordinary.
That silver and gold paint is already showing fingerprints!

I look forward to seeing how well it flys!

Followup: The first flight wasn't successful. While the boost was spinning and straight, most of the ejection charge blew out the back side of the square engine mount! The nose cone dislodged, but the parachute stayed inside. The parachute had a small melt, even with the baffle and a recommended square of wadding.
The flight report with pictures is HERE

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/2    | توسط: فیروز قوچ داشی    |    | نظرات()

S.D. Xanadune Build Part 12 Assembly

The parachute was tied to a snap swivel.
Again, note the short shroud lines.

The snap swivel was attached to the shock cord a few inches down from the nose cone attachment lug.

Here's a picture of the the engine lock ring holding an engine in place.

This picture was taken before all the fin trim lines were on.
A pretty interesting way to lock in the engine. It fits well and cannot be shaken loose.

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/1    | توسط: فیروز قوچ داشی    |    | نظرات()

S.D. Xanadune Build Part 11 Trim Stripes

1/16" wide strips were cut from the Contact paper for trim.
(I should mention the while the Contact paper is called a "paper" it's actually a thin vinyl. )
I wanted to have angled trim strips going around the nose cone and lower engine mount bodies.
The only problem, the vinyl strips won't lay flat around the corners.

I ended up using the small scissors on my Swiss Army Knife to cut the corners apart.

The pieces were individually removed and slight angles trimmed on an area of the backing sheet.

منبع:
http://modelrocketbuilding.blogspot.com

نوشته شده در تاریخ 1390/04/1    | توسط: فیروز قوچ داشی    |    | نظرات()