jet powered models, pulse jets
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1/18/2014 Jet Powered Models, Pulse Jets
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Pulse jet
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What is a pulsejet? The Quaedvlieg pulse The AMT pulse delta Richard Caine/Bailey Machine Service Ordering pulsejet plans The good old Icarus pulse Last but not least
What is a pulsejet?
A pulse jet engine is a jet engine to which the intake of air is intermittent (through valves), resulting in apulsating thrust. It is a jet propulsion engine containing neither compressor nor turbine, equipped withvalves in its front that open and shut and so create thrust intermittently, rather than continuously. Apulse jet creates a lot of thrust.
Sorry, NO drawings of this engine available, just this bitmap images. For plans see: 'Ordering pulsejetplans' or 'The AMT pulse delta'.
The Quaedvlieg pulse
1/18/2014 Jet Powered Models, Pulse Jets
http://www.airtoi.com/pulse.htm#icarus 2/5
At the 1998airshow of Apollo68 in Horst, Imet JeanQuaedvlieg(QuaedvliegTechnologie)who has beenbuildingpulsejets for
almost 25 years. He showed a beautiful delta wing plane (wingspan 1000mm, length1450mm, symmetrical wing) equipped with his pulsejet.
Two plasmabags with fuel enable a just over 3 minutes flight.
The engine has a lenght of 900mm and a thrust of 6.5 kg .
The max speed for this aircraft is about 320 km/h.
At this show the plane was flown simultaneously with the KB70 pulsejet of Bennie van de Goor.
The AMT pulse delta
Mounted in a KB70 Delta, it gives the plane a speed of 390 to 445 kilometers per hour, depending ontemperature and air pressure. Very spectacular to see, if flown by an expert like Bennie van de Goor.
1/18/2014 Jet Powered Models, Pulse Jets
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Two 1 liter hospital plasmabags are used as fueltanks, mounted in thewings. The max.measured speed of theKB70 is 431 kilometersper hour. The thrust of theengine is 90N.
A disadvantage of thistype of engine is thesound production, so in The Netherlands it may only occasionallybe flown in model air shows.
The left-side photo shows how the KB-70 gets launched, while the right-side photo shows how theengine gets started.
Both the engine and the plane are not for sale, but the good news is:
Autocad drawing file for both KB-70 and pulsejet downloadable from AMT pulsejet Page
Some technical info on the KB-70 and the used pulse jet engine, just in Dutch as I got it from Bennievan de Goor: A few terms translated: spanwijdte (wingspan), brandstoftank (fuel tank), vluchtduur (duration of flight)
spanwijdte 112 cm
lengte incl motor 175 cm
leeg gewicht 5.9 Kg
vleugel profiel 10 % dikte eigen ontwerp
materiaal vleugeltempex ingedekt met glasmat 80 gr + koolstofgeteste vleugelbelasting 20 G
brandstoftank 2 x 1 liter (75 % vulling) weegt 1200 gram
vluchtduur 3 minuten
snelheid afhankelijk van luchtdruk en temperatuur390- 445 KM/h
motor eigen ontwerp pulse jet 90 mm rond 880 mm lang
stuwdruk 85 N
brandstof 47 % kerosine JP-438 % wasbenzine10 % kookpunt benzine5% propyleen oxide C3-H6-O
branstofverbruik 500 cc per/min
Richard Caine/Bailey Machine Service
Richard Caine provided me with some other info on pulse jets. He has drawings of about 15 pulsejetengines. Only hardcopies. The pictures you see at the top of this page come from Richard and are forthe brauner pulsejet which has been successfully home built by a number of people over the years. The picture on the left shows Richard's recently finished pulsejet trainer.
On April, 28, 1998 Richard mailed the following comment to me: " Just letting you know that I've beenflying the jet model with a bladder tank system. It rolls, loops and does any of the roll/loop combinationtype manouvres without any flame out problems. A full tank of fuel (80% methanol, 20% ether) gives mean engine run of about 3 min 20 seconds. The glide is quite gentle for that style of model. The model isnot particularly fast. I am now designing a much sleeker, faster jet model. "
If you want to contact him, use: [email protected] or visit his site: Pulsejet Jet Engines
1/18/2014 Jet Powered Models, Pulse Jets
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He also gave me the address of BMS who produce commercial pulsejets for models. You have to orderdirect from the manufacturer. If you want to talk to someone there, Earl Bailey is the man to talk to. Hehas a great knowledge of pulsejets. As far as I do know BMS does not have a homepage.
Bailey Machine Service633W Parker Road
HoustonTexas 77091
USATelephone:- 713 6947017
Ordering pulsejet plans
VTH (Verlag für Technik und Handwerk GmbH , Germany) still has some plans available for pulse jetengines. To order these plans you have to visit the VTH site (will open in new window). The site is inGerman language only. Click on Modellbau and then search for 'pulso'. To start the search press the 'Los!"-button (Go)
You might also try 'katalog' for a search. This will a.o. show you the newest catalog (modelbaupläne)
The good old Icarus pulse
At my club (Icarus) I found a control line planeequipped with a homebuilt pulsejet.Nobody couldtell me who has built the plane and the engine, but itmust have it's origin in the late 60's. It's a 68 cmwingspan model with a 48cm pulse jet engine,covered with the dust of almost 30 years. For thephoto it was cleaned a bit.
As I was told this plane reached 314 km/hour, andthis in the centre of Amsterdam on theMuseumplein, next to the Rijksmuseum. Probablyno noise and security limitations at that time!!!
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1/18/2014 Jet Powered Models, Pulse Jets
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Last but not least
If you are interested in more plans etc., visit Kenneth Møller 's pages. You'll find a link on the Airtoilinkpages under European links, Denmark and under Jet related links. On the Airtoi JetLinks page you'll find more links about pulsejets
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