Cafenea planoare orice despre planoare
#691
Postat 02 December 2015 - 10:12 PM
Din pacate, asta vine doar cu experienta...
Ar mai fi o varianta, matele obisnuit cu avioanele, sa incerci sa il "conduci"... maaaare greseala... un planor se lasa sa zboare liber, si doar se indruma gingas in directia dorita doar cu o adiere de stick, nu mestecat la ele 3D permanent...
#692
Postat 02 December 2015 - 10:20 PM
#693
Postat 02 December 2015 - 10:44 PM
Travel Air, la 02 December 2015 - 09:58 PM, a spus:
Incearca sa-l zbori pe spate, sa-ti faci mana cu el asa :) sau un pic de expo :drinks:
expo am mai mult decat putin, am vreo 30-40 % parca. mai vedem saptamana asta. pe vant puternic aterizeaza singur ca un heli.
#694
Postat 02 December 2015 - 10:52 PM
#695
Postat 03 December 2015 - 10:20 AM
Nu pare sa fie de nici o culoare un DLG, este ceea ce se cheama un HLG (Hand Lunch Glider) adica se arunca din mana, cu forta, pur si simplu.
Imi aduce aminte de clipul cu batranul japonez care zbura cu un planor ca asta - e pe undeva la clipuri memorabile postat pe forum.
ender67, la 02 December 2015 - 04:30 PM, a spus:
Crd ca HK intra intr-o noua faza, "designer glider": ia un model bunicel (gen Guppy sau Dynamo), il baga la productie in China si platesc ceva drepturi de autor.
Cu ce poze detaliate sunt in RCSD cred ca pot sa scot kit-ul intr-o saptamina (sau kit-ul de PuRES, de altfel). Dar deocamdata am prea multe chestii in lucru, si prea mult kituri taiate deja.
Separat de asta un expo de vreo 35% face miscarea servo sa fie liniara (adica scoate expoul din bratul servo si il face liniar).
elicopterele mele http://www.rhcforum....-mele-stiganas/
#696
Postat 12 December 2015 - 02:31 PM
http://www.hyperflig...name=bingo-2-5m
Arata foarte bine.... nu prea pricep faza cu RG15 dar probabil de asta i-au zis Bingo
Aceasta postare a fost editata de ender67: 12 December 2015 - 02:34 PM
#697
Postat 12 December 2015 - 05:33 PM
Ce vad acolo tzipa a AvaMini 2.5m intr-un mod scandalos ! Plagiat intre ucrainieni... au schimbat coada in V si au zis ca scapa...
#698
Postat 12 December 2015 - 05:43 PM
Fisiere atasate
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AvaMini2500.jpg (66.81K)
Number of downloads: 37
Aceasta postare a fost editata de renatoa: 12 December 2015 - 05:43 PM
#699
Postat 12 December 2015 - 05:49 PM
renatoa, la 12 December 2015 - 05:33 PM, a spus:
Ce vad acolo tzipa a AvaMini 2.5m intr-un mod scandalos ! Plagiat intre ucrainieni... au schimbat coada in V si au zis ca scapa...
Eu intotdeauna am vazut la espritmodel.com cu deumirea de Pulsar...
Si cred ca e de fapt un Pulsar 2000 scalat la 2.5 m... nu stiu cum e Ava ca nu am asa ceva dar constructa aripii si a V-tail e de Pulsar ...
Pozele pe care le-am gasit pe net pentru Ava sunt un pic diferite la ultimul segment...
Fuselajul ala fara pilon e intr-adevar ciudat, seamana cu cel de la Ava dar parca difera ...
Aceasta postare a fost editata de ender67: 12 December 2015 - 05:54 PM
#701
Postat 12 December 2015 - 06:00 PM
- la Bingo ultima parte pare a fi de 20 cm ca si de la P2k
- la MiniAva nervurile sunt mai dese, ultima bucata e mai lunga...
In alta ordine de idei...nu cred ca ai luat MiniAva ca nu cred a aia e podea de apartament...
#702
Postat 12 December 2015 - 06:22 PM
Am botul, luat la un garage sale din Germania. Interesant ca se potriveste per-fect pe un Graphite 3.1m, dar nu pe exterior, ci pe interior ;)
#703
Postat 14 December 2015 - 09:56 PM
#704
Postat 14 December 2015 - 10:13 PM
- Flying weight from 1000 g
- si recomandarea motorului asta, nici la dusmani nu l-as recomanda...
Si mai si zic ca ar putea fi prea usor pentru echilibrare... motor de 180 grame !!! ajungem ca la Bird of Time ARF, care cere 400 grame de baterii ?!
#705
Postat 16 December 2015 - 11:40 PM
Am luat o pauza mi mare de masa si am zburat Evo 3ul meu care intimplator ;) astepta in masina. Lansarile sint mai bune am ajuns la 46M inaltime. Inca 14M si sint fericit daca ajung acolo. Cred ca pot ciupi 4M din un model construit mai ingrijit. Restul trebuie sa muncesc la ei.
Acum ca m-am lasat de facut modele pentru altii am mai mult tip pentru mine. Ce bine.
Baieti va urez zile ca astea pline de zboruri frumoase.
Zburati cu un scop nu la intimplare. Un pic de focus ajuta mult.
Traian
Aceasta postare a fost editata de F2B: 16 December 2015 - 11:41 PM
#706
Postat 21 December 2015 - 01:58 PM
Ar fi intereseant de facut o replica la scara..
"Both Daedalus aircraft were constructed with a framework of carbon fiber tubes. Airfoil shape for the wing and tail elements was maintained with a thin polystyrene foam leading edge, polystyrene ribs, and a Kevlar trailing edge. Wing skin was Mylar plastic of approximately 0.3 mil (8 μm) thickness. The bottom portion of the fuselage and majority of the pilot seat were made of Kevlar as well. Horizontal and vertical stabilizers were "all-moving" control surfaces.
Mark Drela had written the program XFOIL which enables the design of airofoils and which can accurately predict the performance at any Reynold's Number which is actually superior to a wind-tunnel test of a proposed section. The wing sections never existed on paper, either as lists of numbers or as drawings. The information came out of the design program onto disc, and this guided the cutter. The spar of the MLE (Michelob Light Eagle) was three tubes aligned vertically.
This scheme was abandoned for the final Daedalus design where the more usual single tube was used. Construction of Light Eagle took 15,000 hours work by 18 members of MIT. The airfoils which were used are: DAE11 , DAE21, DAE31, and DAE51."
Ce e extrem de interesant e ca ambele modele au ampenajele "all-moving" ... deriva e montata un pic excentric pentru a realiza chestia asta. Poate ar fi interesant de incercat o asemenea solutie.
Fisiere atasate
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daedalus.pdf (90.83K)
Number of downloads: 15 -
light_eagle.pdf (56.22K)
Number of downloads: 8
Aceasta postare a fost editata de ender67: 21 December 2015 - 02:02 PM
#707
Postat 21 December 2015 - 02:07 PM
"...Construction of Light Eagle took 15,000 hours work by 18 members of MIT..." :) daca e sa fie... il vreau ACUM !
#708
Postat 21 December 2015 - 02:30 PM
Iaca si desou-urile transparente:
http://www.dfrc.nasa...arge/index.html
Aceasta postare a fost editata de ender67: 21 December 2015 - 02:34 PM
#709
Postat 21 December 2015 - 02:49 PM
http://www.dfrc.nasa...ring/index.html
A series of research flights at NASA's Dryden Flight Research Center in the summer of 2005 validated the premise that using thermal lift could significantly extend the range and endurance of small unmanned air vehicles (UAVs) without a corresponding increase in fuel requirements.
Just as sailplanes use thermal lift and updrafts to soar for extended periods of time, the Autonomous Soaring Project flew a lightweight 15-pound motor-glider to demonstrate that the same concept could be applied to small, powered UAVs to both increase their endurance and save energy.
The remote-controlled model sailplane was modified to incorporate a small electric motor and an autopilot, the latter reprogrammed to detect thermals or updrafts. The software programmed into the autopilot flew the aircraft on a pre-determined racetrack over the northern portion of Rogers Dry Lake at Edwards Air Force Base until it detected an updraft. As the aircraft rose, the engine automatically shut off and the aircraft circled to stay within the convective lift resulting from the thermal or updraft without any human intervention. A project engineer said the small UAV added 60 minutes to its endurance by soaring autonomously, using thermals that formed over the dry lakebed. Nicknamed Cloud Swift after a bird known for feeding on insects found in rising air masses, the modified model sailplane gained an average altitude of 565 feet in 23 updrafts during 17 flights, and in one strong thermal ascended 2,770 feet. Small, portable UAVs with long-endurance capabilities could fulfill a number of surveillance roles including forest fire monitoring, traffic control and search and rescue
Aceasta postare a fost editata de ender67: 21 December 2015 - 02:52 PM
#710
Postat 21 December 2015 - 03:06 PM
Nu au vazut pana acum ca recorduri fpv s-au facut zburand cu motor doar la decolare, pe urma 6-7 ore calarind vanturile ?
Sau ca exista versiune APM thermal hunter? adica zbor autonom care detecteaza termice si incearca sa le foloseasca ...
Niste savanti... :angry2:
#711
Postat 21 December 2015 - 03:32 PM
renatoa, la 21 December 2015 - 03:06 PM, a spus:
Nu au vazut pana acum ca recorduri fpv s-au facut zburand cu motor doar la decolare, pe urma 6-7 ore calarind vanturile ?
Sau ca exista versiune APM thermal hunter? adica zbor autonom care detecteaza termice si incearca sa le foloseasca ...
Niste savanti... :angry2:
Pai nu cred ca acum 10 ani aveai APM TH disponibil pe toate drumurile ...
#712
Postat 21 December 2015 - 03:40 PM
Crezui ca 2015...
Si cercetarea NASA este publica, pe toate drumurile ?
#713
Postat 21 December 2015 - 06:32 PM
renatoa, la 21 December 2015 - 03:40 PM, a spus:
Crezui ca 2015...
Si cercetarea NASA este publica, pe toate drumurile ?
A series of research flights at NASA's Dryden Flight Research Center in the summer of 2005
Nu cred ca e publica..eu am dt de ea sapand dupa Daedalus, am gasit foto de rezolutie mare si cand m-am dus in amonte am dat de asta:
http://www.dfrc.nasa...hoto/index.html
DFRC=Dryden Flight Research Center
#714
Postat 08 January 2016 - 10:49 AM
Recunoaste cineva ce au copiat ?
http://www.hobbyking...170mm_ARF_.html
Ce nu imi e clar, ce e cu eleronashul ala din cap de aripa... cum e actionat ?
Nu se sugereaza nicaieri ca ar avea 6 servo pe aripa, ba se vad clar doar 2 deschideri... :unsure:
http://www.hobbyking.com/hobbyking/store/catalog/55170s6.jpg
Aceasta postare a fost editata de renatoa: 08 January 2016 - 10:50 AM
#715
Postat 08 January 2016 - 04:32 PM
#717
Postat 08 January 2016 - 05:04 PM
Nope cred ca mai degraba de launch model (china)
Aceasta postare a fost editata de stiganas: 08 January 2016 - 05:06 PM
elicopterele mele http://www.rhcforum....-mele-stiganas/
#718
Postat 08 January 2016 - 07:48 PM
renatoa, la 08 January 2016 - 10:49 AM, a spus:
Ce nu imi e clar, ce e cu eleronashul ala din cap de aripa... cum e actionat ?
Nu se sugereaza nicaieri ca ar avea 6 servo pe aripa, ba se vad clar doar 2 deschideri... :unsure:
http://www.hobbyking.com/hobbyking/store/catalog/55170s6.jpg
Eleronul " oblic " e o solutie inovata de Heinrich si utilizata curent la toata gama Stork . Actionarea se face prin cuplare mecanica a eleronului clasic cu cel de capat " oblic " printr-o imbinare culisanta de tip tija in " teava " , actionarea e facuta de servo-ul eleronului :
Fisiere atasate
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Stork .jpg (226.75K)
Number of downloads: 19
#719
Postat 08 January 2016 - 08:10 PM
#720
Postat 08 January 2016 - 08:47 PM
renatoa, la 08 January 2016 - 08:10 PM, a spus:
Nu e chiar RDS , e o solutie foarte simpla , totul e rezolvat in " corpul " eleroanelor , cel clasic si cel oblic , paralel cu linia de balama in prima treime a corpului eleronului oblic e o tija se otel de aprox 1mm , care culiseaza intr-o teava de cupru care e in capatul eleronului standard . Constructiv sunt doua orificii aliniate ,orientate catre eleronul oblic in care se fixeaza intai teava de culisare , apoi se introduce tija in teava astfel fixata urmand sa fie culisata catre eleronul standard si fixata /lipita dupa aliniere . Tot ansambul are 25 mm lungime si sub 3 g.
Foarte simplu si ingenios !