"I'm pretty sure the inverse is true, ground effect can be a bitch :)"
siddharth tiwari's Discussions
mechanical design of quadrotor
Started this discussion. Last reply by Gregg "Cabe" Bond Jan 21, 2010. 11 Replies 0 Likes
hey guys for my project i am supposed 2 build a quadrotor...i am assigned the mechanical aspect of designing the frame ...the specifications that we are looking for the rotorcraft are as…Continue
siddharth tiwari's Page
Latest Activity
siddharth tiwari replied to siddharth tiwari's discussion mechanical design of quadrotor"after lot of searching i think i will be settling for robbe roxy BLDC..giving me abt 450gms ..used on std mikrokopters ...nw fr a flight time of abt avg 20 mins with payload will a 11.1V Li-Po 2500mAh suffice ?"
Martin Seven replied to siddharth tiwari's discussion mechanical design of quadrotor"Irrelevant, the air pressure at n meters is pretty much the same as at n+100 meters. If it'll hover 1 m above ground, it'll hover at 100 meters just as easily."
siddharth tiwari replied to siddharth tiwari's discussion mechanical design of quadrotor"guys ..if i m for a a ceiling of say 100m hw mch thrust am i looking at from my motors ??"
DeveloperMark Colwell replied to siddharth tiwari's discussion mechanical design of quadrotor
"Good design, even if a part breaks, you just cut a new one..."
Martin Seven replied to siddharth tiwari's discussion mechanical design of quadrotor"You can have it CNC cut from CF sheets, they are outrageously stiff, light and they're getting cheaper by the minute.
To avoid bending under load and to add a couple artificial break points you could draw a 3D frame made from 2D elements and…"
Gregg "Cabe" Bond replied to siddharth tiwari's discussion mechanical design of quadrotor"what about CNC/Molded EPP/EPS foam with a carbon fibre skin?"
DeveloperMark Colwell replied to siddharth tiwari's discussion mechanical design of quadrotor
"Design a failure mode to allow shedding of mass, battery mounted with velcro with path for escape during vertical crash, allow quad arms to pivot up at force 20% before breakage, design a multistage shock absorbing landing gear, a carbon 1/2 hoop…"
Pig Pilot replied to siddharth tiwari's discussion mechanical design of quadrotor"CNC is not the best method for this construction and it's going to be extremely expensive in titanium which is not ideal for this. If your joints are coming apart on impact then the joints are poorly designed and you are not using the right…"
siddharth tiwari replied to siddharth tiwari's discussion mechanical design of quadrotor"hey thanks a lot mark ...the reason that we are opting for one piece is to make it sturdy and rigid and to get rid of all the gluing ..its very frustrating to keep gluing stuffs which keep falling apart each time you crash due to weakness in…"
DeveloperMark Colwell replied to siddharth tiwari's discussion mechanical design of quadrotor
"Cast titanium around silica foam centers like a birds bone. Then cnc to final dimensions, but this has never been done before before. Could use aluminum for entire AF, but for best design I would cnc aluminum parts to join carbon fiber tubes to…"
siddharth tiwari posted a discussionmechanical design of quadrotor
hey guys for my project i am supposed 2 build a quadrotor...i am assigned the mechanical aspect of designing the frame ...the specifications that we are looking for the rotorcraft are as follows:total weight of abt 1 kgpayload weight (additional ) 500gmsceiling of about 100mthe frame is not going to be handcrafted but is going to be done on cnc's with no glued joints ..but all in one piece..any suggestions for selection for material ...or for that matter in designing it ...See More
Comment Wall
- No comments yet!
Contests
Season Two of the Trust Time Trial (T3) Contest has now begun. The third round was a reliablilty/aerial photography round for both planes and copters, which is now closed. Stay tuned for the next round, beginning soon.A list of all T3 contests is here.
Top Content
Groups
-
DIYDrones - CNC Project
61 members
-
Moderators
57 members
-
ArduPilot (legacy) User …
95 members
-
ArduCopter Evolution Team
108 members
-
ArduCopter User Group
617 members
© 2012 Created by Chris Anderson.
