The Theory Of Helicopter Flight
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that looks pretty flimsy eh?Originally posted by eurofighter:
but not as flimsy as the chopper i saw in malacca... the one beside the portuguese ship...
where can i find clear pics of our pumas...?? (besides asking me to take the photos of course) -
all starts with Benoulli's Principle
uhh.. got a question tho'.. why don't whirlybirds have counter-rotating rotors?
won't this make them a lot more stable and negate the need for a tail rotor? -
well, the pilots have to control the rotor blades manually, every inch they pull on the collective will have an effect on the torque reaction. Even the atmosphere will affect the aircraft, the pilots gotta do their own adjustments to keep the aircraft straight.Originally posted by the Bear:all starts with Benoulli's Principle
uhh.. got a question tho'.. why don't whirlybirds have counter-rotating rotors?
won't this make them a lot more stable and negate the need for a tail rotor?
I think with a counter rotating rotor won't give that much control... what's more you are controlling from the rotor area itself... kinda like using a wrench and holding it in the centre instead of the end? -
Bear, here's your helicopter, with a counter rotating rotor...
But it isn't gonna be easy to ship around the world or fly... Kinda out of shape if you asked me.
The Airscoot rc helicopter is one of the latest additions to the world of mini electric rc helicopters, but with a difference; the Airscoot features contra-rotating main rotors as opposed to a conventional heli that has a single main and tail rotor. Contra-rotating means that both rotors spin in opposite directions to one another.
The Airscoot's design is very beneficial to the beginner rc helicopter pilot, as the contra-rotating rotors mean that no tail rotor is needed - that's one less function to worry about!
So why no tail rotor? Well, a helicopter's tail rotor is needed to counteract the torque generated by the spinning main rotors - without a tail rotor the fuselage of the helicopter would just spin out of control in the opposite direction to the main rotors.
With the Airscoot however, each rotor balances out the torque generated by the other one and so the fuselage is not subject to the normal forces of torque. Therefore the fuselage doesn't want to spin in any direction at all.
The Airscoot rc helicopter comes almost ready to fly, with a final assembly time of around only 30 minutes.
The model comes with all mechanics and radio control servos and receiver fully installed and set up - the rc gear being a simple 4 channel system rather than the usual complicated 6 channel systems that are required to fly many model rc helicopters.
As for flying the Airscoot, it is a very stable model and can easily be flown indoors in a decent sized room. It has not been designed for helicopter aerobatics, but it's intended use is to get the novice pilot used to level flight and hovering a model helicopter, both of which it does perfectly well. -
cool
i guess it's all about how agile they want the helicopter to be as opposed to how stable...
in the usable helicopters, the pilot can make it stable and still have the agility if they want to.. so there aren't that many counter-rotating ones around -
Those 2 pics have been rejected by the screeners at A.Net. Only one(the chopper on the ground) managed to passed the screening.Originally posted by kopiosatu:that looks pretty flimsy eh?
but not as flimsy as the chopper i saw in malacca... the one beside the portuguese ship...
where can i find clear pics of our pumas...?? (besides asking me to take the photos of course)
You want clear pics of SPs? I will be uploading a couple tonight plus a few chinooks from AOH 2004. With screening and stuff, the pics will be online tml or day after. -
You've got the Ka-25 family of russian choppers with counter-rotating rotorsOriginally posted by the Bear:cool
i guess it's all about how agile they want the helicopter to be as opposed to how stable...
in the usable helicopters, the pilot can make it stable and still have the agility if they want to.. so there aren't that many counter-rotating ones around -
where are the pumaaaaaaaaaaaaaaaaaasOriginally posted by eurofighter:You've got the Ka-25 family of russian choppers with counter-rotating rotors -
Pai seh Kopio, will upload them tonight. So busy... got 5 projects leh.
Btw since you in 125, I jus saw a pic today on RSAF SPs and one of them got heat suppressors on the exhaust. It's a box like thingy fitted there. Is this experimental or what ? -
the trial mod no more liao... scrapped, hahahaha... very ma fan, hard to climb up to do servicing...Originally posted by eurofighter:Pai seh Kopio, will upload them tonight. So busy... got 5 projects leh.
Btw since you in 125, I jus saw a pic today on RSAF SPs and one of them got heat suppressors on the exhaust. It's a box like thingy fitted there. Is this experimental or what ?
Oh take your time, i just can't find any nice wallpapers of RSAF Pumas to put on my desktop...
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It would be good to be there though. For maybe special missions requirement.
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well its been on trial before i came in... i guess they took it down for a good reason eh? no one knows... unless of course the higher ups let us know the reason.Originally posted by eurofighter:It would be good to be there though. For maybe special missions requirement. -
I'm sure the FLIR pod isnt for trials right?
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MPAI?Originally posted by eurofighter:I'm sure the FLIR pod isnt for trials right?
no, its there to stay... its a filter...
P2 air will fill up a tube on each bullet, and block air from coming in from the front... intake of air will be from the sides of the MPAI structure where there are tiny holes, which are spiral design... grass and FOD will be filtered out from there.
Then its not fitted in the Red & White Aircraft... its too heavy. -
Nope... the forward looking infra red. The round thingy fitted on i think on port side.
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Oh, the turret.Originally posted by eurofighter:Nope... the forward looking infra red. The round thingy fitted on i think on port side.
its fitted on Search & Rescue aircrafts.
Not a trial mod, but its a recent mod -
But i have also seen it on 126 models in Oakey.
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yeah, u can put it on if the aircraft fits mah. They have to learn how to use it right? And Oakey is a training squadron for SP.Originally posted by eurofighter:But i have also seen it on 126 models in Oakey. -
Ohhh i see... thanks anyway.. Pics be coming soon...
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tank kew tank kew~!!!Originally posted by eurofighter:Ohhh i see... thanks anyway.. Pics be coming soon...
apparently the person closest to the aircraft can't have a picture... -
Yeah, no cams in airbase right?
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hey kopiosatu thats cool...
u got a great deal of info there...do u have any reference or links that i can visit for those info...
anyway that FLIR is a system under my care... -
very long ..
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you mean the basics of flight?Originally posted by Twincat:hey kopiosatu thats cool...
u got a great deal of info there...do u have any reference or links that i can visit for those info...
anyway that FLIR is a system under my care...
Wooooo u do the kaman... hmmmmmmmmmmm did u just come over 2 days back to do a check???
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no... if u have, please declare, if not u kena jialat jialatOriginally posted by eurofighter:Yeah, no cams in airbase right?