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Do you want to die? Because that's how you die. by jmbishop
Started on: 09-04-2017 01:04 AM
Replies: 19 (562 views)
Last post by: texasfiero on 10-31-2017 06:30 PM
jmbishop
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Report this Post09-04-2017 01:04 AM Click Here to See the Profile for jmbishopSend a Private Message to jmbishopEdit/Delete MessageReply w/QuoteDirect Link to This Post


Home made ultralights are nothing new, I'd love to build one. This Ultralite will probably be safe because with such a chunky fuselage he may not have enough thrust to make it off the ground.

[This message has been edited by jmbishop (edited 09-04-2017).]

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E.Furgal
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Report this Post09-04-2017 02:13 AM Click Here to See the Profile for E.FurgalSend a Private Message to E.FurgalEdit/Delete MessageReply w/QuoteDirect Link to This Post
A pair of bothers had to learn through trial and error.. I'd just be packing a shute
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jmbishop
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Report this Post09-04-2017 02:30 AM Click Here to See the Profile for jmbishopSend a Private Message to jmbishopEdit/Delete MessageReply w/QuoteDirect Link to This Post
A traditional parachute needs altitude. A rocket propelled chute needs less.
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MidEngineManiac
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Report this Post09-04-2017 12:11 PM Click Here to See the Profile for MidEngineManiacSend a Private Message to MidEngineManiacEdit/Delete MessageReply w/QuoteDirect Link to This Post
PIETENPOL !!!

I once built one out of Ash instead of spruce.

That was a bad idea.

It weighed the same, but damn it was brittle. Lets not talk about the Chuckbird or the 84 cu in genset motor ....or for that matter a Hummelbird Once had an Airforce General tell me the only thing missing on that thing is 6 handles on the sides.

[This message has been edited by MidEngineManiac (edited 09-04-2017).]

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blackrams
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Report this Post09-04-2017 11:20 PM Click Here to See the Profile for blackramsSend a Private Message to blackramsEdit/Delete MessageReply w/QuoteDirect Link to This Post
Not knowing what the propulsion is for this project, I can't say it'll fly or not but,

It would most surely make a fine floating platform. Add oars and paddle away......

------------------
Ron

Isn't it strange that after a bombing, everyone blames the bomber, his upbringing, his environment, his culture, his mental state but …
after a shooting, the problem is the gun....
Open your frigg'n minds, think about all the other tools that can be made into WMDs.

I sincerely hope that life is never discovered on another planet because, sure as hell Progressives and Socialists will want to send them money.

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Wichita
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Report this Post09-04-2017 11:47 PM Click Here to See the Profile for WichitaSend a Private Message to WichitaEdit/Delete MessageReply w/QuoteDirect Link to This Post
It does appear they are doing their homework.

Glider? Perhaps.
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ls3mach
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Report this Post09-05-2017 02:17 AM Click Here to See the Profile for ls3machSend a Private Message to ls3machEdit/Delete MessageReply w/QuoteDirect Link to This Post
Archer?
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jmbishop
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Report this Post09-05-2017 02:58 AM Click Here to See the Profile for jmbishopSend a Private Message to jmbishopEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by blackrams:

Not knowing what the propulsion is for this project, I can't say it'll fly or not but,

It would most surely make a fine floating platform. Add oars and paddle away......


Brushless motors, I don't know what size he's using but he's already concerned it will be anemic.
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TheDigitalAlchemist
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Report this Post09-05-2017 05:36 PM Click Here to See the Profile for TheDigitalAlchemistClick Here to visit TheDigitalAlchemist's HomePageSend a Private Message to TheDigitalAlchemistEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by ls3mach:

Archer?


Totally!
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jmbishop
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Report this Post09-14-2017 04:43 AM Click Here to See the Profile for jmbishopSend a Private Message to jmbishopEdit/Delete MessageReply w/QuoteDirect Link to This Post
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rogergarrison
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Report this Post09-14-2017 03:24 PM Click Here to See the Profile for rogergarrisonSend a Private Message to rogergarrisonEdit/Delete MessageReply w/QuoteDirect Link to This Post
Pretty sure even an ultralight needs an airfoil shaped wing. Dont think a flat sheet of styrofoam with wood and aluminum structure works. May work on model planes that are way over powered. I doubt this ever gets off the ground if it even moves at all under its own power. I think their just building a cute little toy airplane to drive around in parades. If by some freak chance it DOES get airborne, you couldnt get me in it.
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Report this Post09-14-2017 04:53 PM Click Here to See the Profile for Marvin McInnisClick Here to visit Marvin McInnis's HomePageSend a Private Message to Marvin McInnisEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by rogergarrison:

Pretty sure even an ultralight needs an airfoil shaped wing.



Get anything moving fast enough and it will fly. (Both the F-4 and the F117 provide successful examples.) But controlling flight is another matter. At subsonic speeds a flat-plane wing is certain to have a very poor lift-to-drag ratio and terrible stall characteristics.

[This message has been edited by Marvin McInnis (edited 09-27-2017).]

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jmbishop
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Report this Post09-27-2017 11:56 AM Click Here to See the Profile for jmbishopSend a Private Message to jmbishopEdit/Delete MessageReply w/QuoteDirect Link to This Post


Those wheels...

They are too small and will put to much rotational force on the spar. Bicycle wheels would be better with a triangular mount and suspension if at all possible. He has 2 spars, there's no reason not to use them both to attach the landing gear.

[This message has been edited by jmbishop (edited 09-27-2017).]

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2.5
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Report this Post09-27-2017 04:34 PM Click Here to See the Profile for 2.5Send a Private Message to 2.5Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by jmbishop:



Those wheels...

They are too small and will put to much rotational force on the spar. Bicycle wheels would be better with a triangular mount and suspension if at all possible. He has 2 spars, there's no reason not to use them both to attach the landing gear.



Seems like this was done before.
Loooong ago.

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jmbishop
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Report this Post10-13-2017 11:07 AM Click Here to See the Profile for jmbishopSend a Private Message to jmbishopEdit/Delete MessageReply w/QuoteDirect Link to This Post
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jmbishop
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Report this Post10-25-2017 09:44 PM Click Here to See the Profile for jmbishopSend a Private Message to jmbishopEdit/Delete MessageReply w/QuoteDirect Link to This Post
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Report this Post10-25-2017 10:03 PM Click Here to See the Profile for williegoatClick Here to visit williegoat's HomePageSend a Private Message to williegoatEdit/Delete MessageReply w/QuoteDirect Link to This Post
My favorite part is the dogs.

Thanks for posting. It is an interesting story, but I haven't got a clue as to whether it will fly.
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jmbishop
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Report this Post10-26-2017 01:01 AM Click Here to See the Profile for jmbishopSend a Private Message to jmbishopEdit/Delete MessageReply w/QuoteDirect Link to This Post
I've enjoyed watching.

I think it will fly but I don't know if it will go well on the landing, I think there's a very good chance the spar will get twisted and break.

The fuselage is chunky which may keep it from getting much flight time but I guess we'll see soon how it goes.
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jmbishop
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Report this Post10-26-2017 08:59 PM Click Here to See the Profile for jmbishopSend a Private Message to jmbishopEdit/Delete MessageReply w/QuoteDirect Link to This Post

jmbishop

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Member since Jul 2006


It flew about as well as the spruce goose. As I thought, just not enough thrust for the airframe. If I was him, i'd consider a new fuselage and possibly abandon the biplane configuration. More thrust is not the worst path to take but your power plant is limited on ultralight aircraft and I'm not sure how close he is to that limit. Looks like the landing gear did hold up for the first few ups and downs.
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texasfiero
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Report this Post10-31-2017 06:30 PM Click Here to See the Profile for texasfieroSend a Private Message to texasfieroEdit/Delete MessageReply w/QuoteDirect Link to This Post
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