Hahaha, good luck pulling that sucker out 😀
Know what you mean Homer, not as easy as it sounds. Had a E.E. Lightning do the same once a long time ago. Buried one wheel up to it’s axle and the other just over the tyre. When first inspected, it was found that the high tyre was just about bursting as it had worn to the belts under heavy braking. A strong wire cage was put round it and then the tire was deflated with a .303 bullet fired from a safe distance. The tire blew itself to pieces and the shrapnel was mostly contained. A new wheel fitted and then a heavy lift crane, running on those interlocking runway plates (senior’s moment) had to be used to lift her clear and put her back on the runway. There was no way that sucker was going to be ‘pulled’ out. 😀
A brilliant story and well read.
Hey guys, you think you’ve got it bad. Just think about us poor ******s, sweltering in 35* and no pool to jump in. :diablo::diablo::diablo:
Adelaide, South Australia
Hey guys, you think you’ve got it bad. Just think about us poor ******s, sweltering in 35* and no pool to jump in. :diablo::diablo::diablo:
Adelaide, South Australia
Perhaps these pics can shed some light…;):diablo:
The wings may fit the silhouette but the nose is now where near it. I’m guessing that it was intended to have side intakes and a solid nose.
Jbritchford,
Nothing known except for this silhouette.
How about the swing wing Lightning. Nothing known except for this silhouette.
Sorry for the delay in replying Topspeed.
Yes, that’s the one. That guy is certainly doing a lot of model flying. I wonder if he’ll ever get the full size plane in the air.
My basic structure is square aluminium tube of various sizes, not necessarily of aircraft grade. If I get it right, most of it will be non load bearing so a lesser, and cheaper, grade should be ok. I’ll use wood for spars and receptor boxes (removable outer panels), ply and foam for ribs and cover with thin ply plus f/glass.
I’m currently trying to get a rib lay-out to model correctly. See below. The Fin stubs have been moved out-board since saving this image.
Bear with me if I’m slow to post as I don’t come to this site often.
Juke. I can’t really answer your questions. The JD-2 is reportedly a very stable platform and many are still flying in the States. They have a rather flat lift off and a nose high landing attitude. How mine will compare I’ve no idea…as yet. At a later date I will build a large model and try to evaluate it. I’ll have to be careful not to over power it though. Even a brick will fly given enough horses. I’ve often wondered if that has been taken into account on the ……..seniors moment….that radio controlled Facetmobile like thing that’s on utube????
As to Reynolds number, haven’t got that far yet. The books that I have don’t cover unusual platforms like the double delta, or truncated taper wing, what-ever you want to call it. I’m thinking of contacting an aero-design lecturer in a local university to see if he would set it as a test for his students. Free analysis, hopefully.
I hope you’re right about weight, it’s going to have some weighty wooden spars, more than your conventional plank wing. Leading edges may also be a ply-f/glass combo as well. Time will tell.
Doug
G’day Richard, yes, I’ve seen the E-Go project but it has one feature that I personally don’t like. The Cunnard. One of the objections people dislike a delta design is the loss of view, forward and down. The Cunnard takes it to another level all together in my opinion. Not withstanding, the E-Go is an interesting design all the same. I wish I could get those same speed figures, but I doubt that will happen.
Juke, no, there’s no connection with the Facetmobile although I have been following various threads concerning it. My design is based on the JD-2 although the wing profile is something that just evolved along the way. I have had a “quickie” flight analysis done and it will fly and is stable. That’s all I can say at this time. I’ve recently altered the wings so my past measurements and spec’s have gone out the window so to speak. Basically, I’m starting again. I can tell you that I have 157sqft of lifting surface including the turtledeck/back. As to weight, how does one arrive at that figure prior to building anything. I think I will use an approximation for my initial calc’s, probably about 450kilos MTOW. That’s allowing 100 for myself. We have a max increase in the pipe line at the moment so IF and when I build, I’ll have 600 to play with.
Engine size will be a limiting factor as I’ll be building in a hand to mouth fashion and it’ll have to be a cheap motor. All the same, I’ll design the wing internals to take high speed into account. You never know, I might win a lottery 🙂
Before any-one mentions it, to some it looks nose heavy but let me assure you that this is normal and my CoG is approximately correct. I don’t, at this stage, know what the range is though.
Thanks for your comments guys. It’s coming on……..slowly.
Moggy, the inst’ panel isn’t set in concrete so to speak. Will a glass display really be cheaper? I haven’t flown with one and have reservations about readability in our bright sun light.
This plane was originally meant to be built on the cheap, like not using aircraft grade materials and scrounging as much as I could. Call me another penniless flyer.
Pity you guys don’t have a more ultralight/recreational/experimental following. That’s the reason I stopped visiting.
Juke, the names Doug, if you want to use it. Also, if you would like to see more about my plane and it’s development, go to homebuiltairplanes.com and search for either ‘Introducing the Eagle-Ray’ or ‘Slow flying Delta’s’ (I think they’re the correct links)
Hi topspeed, it’s been a long time since I last visited this site. Nice to hear from you all the same. I’ve moved on to a new design in the mean time and so my DeMansfield Bolt is on the back burner.
My new design is based on John Dykes JD-2, a double delta 4 seater with folding wings. My version is a single seat, twin fin fighter look alike. Hope you approve.
Thanks for your replies lads. I realize that most of you are aircraft enthusiasts but don’t fly or build your own. Here in Oz, as in the US, many people, male and female, build either kits or from scratch, a high variety of planes. Nowadays, most fly on a Recreation Certificate rather than a PPL license. It’s waay cheaper and no medicals are required.
I’ve been dallying with this design for about 6 months and it has gone through a lot of metamorphoses. Prior to this, I was working on my DeMansfield Bolt, see below. Both designs have raised some interesting talk back on both Oz and US forums. I like something that is different, outside the square. I’m not an engineer although I worked with them in my career as a Metrologist (Science of Measurement) These projects keep me off the streets until I win the lottery to be able to build one. I try to aim for other pennyless fliers in order to keep their dreams alive as well.
The “ILS aerials” are in fact, pitch trim vanes, an addition to the original design. The DD has, apparently, fairly heavy controls and this addition helped smooth out the landing phase. We have a tricycle undercarriage where all wheels swing backwards. The wheels don’t quite disappear into the fuselage and wing stubs (outboard of wheels are removable on mine but fold over the fuse’ on the DD. The aircraft is road tow-able in that configuration).
VW engines are easy to get hold of here. Our cars don’t rust out like yours do. A Subaru could also be used but then you have to fit in all the water cooling paraphernalia and deal with the extra weight. Turbo charging is allowable with no extra qualification requirements, not that many builders go to that extreme. To be honest, I’ve never seen it mentioned on the Oz forum, maybe I should check my facts later. Money aside, I could design for the 3300 Jabiru flat six or even the 5800 flat eight. Both would really stuff up my weights and balances though, plus I would have to build in metal ……… not my thing.
Gotta go, sun’s out and the beach is calling :diablo: Sorry, couldn’t resist.
Stay safe, Doug
RA.Aus
G’day Canberra, surprised to see you’re asking here rather than on http://www.Receationalflying.com.au That is the home forum for things aviation in Australia. You could also try http://www.Homebuiltairplanes.com This is the American site where there are more basic flyers than anywhere else.
Good luck with your VP-1.
Cheers, Doug
Nash Rambler
I glad you guys enjoyed my ‘stary’. Must check my spelling a bit better.
Just another episode with the Rambler. Remember I said that the starter button was under the clutch pedal. Well, one day the car was being a bugga to start and eventually, the button got so hot, it burst into flames. A pinic disconnection of the battery and some water thown in against the fire wall dowsed it before any real damage was done.
The button was cooked so I had to fine another. At that time, only the Mini was still using a similar button but it was way too small to either fit, or to handle the starter current required to turn over the 3.3 motor.
I did some hunting around and eventually found an almost identical starter button used on, of all things, a combined harvester. Worked like a dream.
Gee I wish I still had that car. BTW, as ugly as it was, it was still a chick magnet.
Cheers, Doug