Sundowner.pl

Hmm two days without any humorous line... man I'm getting old :prop: Some humorous, some true... some both :thumbup: : - Everyone is a student in a helicopter - If you push the stick forward, the houses get bigger. If you pull the stick back, they get smaller. Unless your in a helicopter, then you need to find another stick. - Gravity never loses. The best you can hope for is a draw. - Try not to get yourself into a Blew Blade situation... You know, where 1 blew this way, another blew that way... And if you do, push full right pedal and stare at the OAT gauge until impact - People fly airplanes, pilots fly helicopters - Learning to hover is like standing on top of a greasy basketball, while patting your head and rubbing your stomach. - Runways are for beauty queens - A mile of road takes you nowhere, a mile of runway takes you elsewhere, a helicopter takes you anywhere. - Airplanes resemble birds. Helicopters resemble bug-like creatures from a sci-fi movie. - Never fly wearing anything you wouldn't want to hike in - A helicopter is five thousand moving parts trying to do you bodily harm - Never stand in a shadow thats getting bigger - A Chinook - Two palm trees flying around in a dumpster trying to copulate - If the button is Red, Yellow and Black Striped, or Dusty - DO NOT Touch It! If you DO push a button and it does something you don't want it to or the other pilot starts squealing, Push it again - Fast! Part of preflight briefing: "If we crash and I am moving - Follow Me. If I'm not moving, take me with you." Q: Whats the difference between a helicopter and it's pilot? A: The helicopter stops whining when it finishes work! Q: What is a helicopter formation? A: Any two helicopters traveling in the same genral direction on a given day. As an helicopter pilot, one of two bad things can happen to you and one of them will happen: a. One day you will walk out to the helicopter knowing that it is your last flight. b. One day you will walk out to the helicopter not knowing that it is your last flight. After dying in a helicopter crash, three Medevac crew members find themselves at an orientation to enter heaven. Each one was asked, "When you are in your casket, what would you like to hear your friends and family saying about you?" Sean says, "I would like to hear them say I was a great medic and a great family man." Karl says, "I would like to hear them say I was a wonderful husband and an excellent pilot who made a difference." The copilot says, "I would like to hear them say, 'Look! He's moving!'" :thumbup:

Soo... did you know that 2 bladed Cobras can't go below +0,5 Gs ? :music_whistling:

Yeah, initially TM 1-1520-238-10 was released to the public on 15th December 1999. All maintenance manuals shortly after, so almost all data for Alphas is available, the Deltas are still a mystery though. Unfortunately no one needs to know how much mils do the symbology represent, so it's omitted in all manuals, but that's crucial information when making a really realistic sim, and for that... well we have to ask people like you :smilewink:

This should answer your question Yellonet, for more, search for TM 1-1520-238-10 manual Brad, next time you fly, could you remember how big is the image ? Compare the horizon line to something inside the cockpit. Or the boresight cross, or anything else we could measure.

Thanks Brad for paying attention to this, hope this will not distract you from what you really suppose to do there, and only enrich your understanding of how that peace of machinery works :smartass: Now we're waiting for you to start night flights :smilewink: Well the gun has already some offset from the crew helmets, but, as far as I know, it's not angular offset, - that means, the gun turns the same degree that a pilots helmet is, so no computer compensation is required. If there'll be angular offset, the computer had to compensate, and since the PNVS has no means of measuring distance, that gun would have to be zeroed on a specified distance.

Yeah I might be wrong on that one, have to read about it more. I'm more basing on what the earlier generation systems were doing in the 60/70's.

Note, the second video is in DTV, not IR or NV.

Well in most cases, you may have to chose the place you crash ;) Yes you're right, you may recover, when you have enough altitude, and aircraft is responsive, to put it into dive, gain speed, and that change your odds, to the situation to high-speed-no-tailrotor one. Yet you can't talk about autorotation in this case. Autorotaton is using air flow to power the rotor in controlled descend. In most cases (almost all) loosing tail rotor in hover or low speed fly occurs at relatively low altitude, and result in crash.

That depands. Mostly on when that happends. You have to know that the tail rotor is not the only thing that counter the torque of the main rotor. Vertical stabilizer, and tail boom does this also. When you loose a tail rotor in hover or low speed fly, you are pretty much screwed, and only thing that may help you now is your seat and design of the fuselage - will it make your crash 'soft' enough to survive it. When at high speed, you may have enough air flow through vertical stabilizer, to counter most of the torque. It's there because, the tail rotor have very little efficiency when air passes perpendicularly to the rotate axle. Helicopter will still tend to turn, but you have chances for successful running landing.. yet prepare yourself for rolling over. Biggest chances in surviving such event you have in Fenestron® equipped helicopters, because their rotor have zero efficiency in high speed flight - so the vertical stabilizer have to be so huge, it provide all the anti-torque force you need.

Ok, here ya go: - AN/AQL-144, or any other 'disco ball' actually try to blind the missile seeker, making it see a target large as the sun. When its far away, they can still home on that huge heat signal, but when they coming closer, the seekers are totally blinded and can't see s...stuff ;) so they should fly by. Well in reality it doesn't always work that way, because modern sensors can work on few frequencies, they can just ignore that kind of jamming - almost all new seekers that based on IIR technology, are immune to those systems. - ATIRCM/DIRCM comes to the rescue in those situations, those systems are small turrets with optics for targeting and some sort of beam projector - it may be laser, or microwave. Different manufacturers have different approaches. What those do is actually shooting a beam of energy at the missile completely blinding the missile sensor. It is a high energy beam, not enough to actually fry the sensor, but high enough to rise its temperature high enough to become completely blind. - The CMWS and similar threat detection system work pretty simple, they work in IR and UV. So, what would be a flare ? A slow, falling down bright light that is across the spectrum. Reflections? They're short in time, and only in IR or UV. So now how to identify a missile ? Its visible only in IR, going fast, and with time its being more and more intense. Of course those systems are not fool proof, and they have some response time, but that's still better than Mk1 Eyeball ;)

I'm talking about AH-64Ds, the papers for work on it were signed in august, last year.

This might be the Block III evaluation chopper, Boeing is working on those for more than a year now.

Well think of Apache like of an lizard, that can loose its tail and survive. Apache doesn't have heavy armor against heavy missiles, there's always something that will get through it and blow protected elements away. This chopper part can be blow away but the whole will still function, and still be able to fly to safety. There's no need of bolting in heavy armor plates, when hit - engine will be damaged, and without these heavy armor, the second can still fly you back home. Apaches best armor is its agility, stealthiness, crew situational awareness, and warning/countermeasure systems. The best protection against a missile, or AAA, is not to be shot at in the first place. Anyway, look at the Tiger, or Mongoose, the toughest armor part on those are the crew Kevlar vests :lol:

Not really Iraq... actually it's from NAS Oceana:

That would have to be the newest Su-27SM*, no other '27 is cleared to use those missiles. *newest == less data == hard to model == dream on ! :smilewink:

Hmm, that's weird. Because what I would like for anyone interested in this subject to do, is to take some glasses, correction, or protective. Put clear tape on the right side, prepare a marker, stare at one point ahead of you, having your head in neutral position - straight to that point. Put a dot on the glasses with your marker where that point your looking at is, then draw a circle around it, put glasses on again and just notice, that this blurry circle is always in center of your vision, when you turn your head into things, its not to the left, its not to the right. Even though its perceived only by one of your eyes its always in the middle of your vision.

If your flight path marker is 20 degrees from real flight patch... then I would say... a lot! The same with gun, the gun aims where you look, so you look at the target using the HDU to aim... squeeze the trigger, and bullets land 20 degrees to the left. [EDIT] Brad, I know, but there is a difference - how you look at the world through your eyes (plus the HDU) and how you look at the simulated world. In reality the HDU is mounted so when you look straight ahead the symbology is centered on your right eye. So on the computer screen they also have to be centered. I don't think you fly with the HDU more to the right from your center of vision... actually since its a collimated image, you probably won't see anything on it.

The problem with this approach is - you don't actually 'aim' where you look, it would always be few degrees to the right, so all flight symbols would become meaningless.

Rather continental Europe - Netherlands and Dutch The Brits AH Mk1 have CMWS system on the airframe.

I don't refer to the 'disco ball', I'm talking about the ATIRCM/DIRCM active countermeasure turret: There are two of those mounted on that Apache on the wingtips, similar to the European WAH-64Ds, but the Europeans mount AMASE pods there, that have both CMWS sensors and chaff/flare launchers, and soon will get those DIRCM turrets. So it appears that the Americans will keep mounting the CMWS on the chopper itself and just mount the laser turrets on the ATAS mounts. Here's some info about the AMASE with DIRCM

I've seen many helicopters in flight in my life, also flew in few as a cargo :pilotfly: And I was really surprised by the noise (lack off ;) ) three times, first with the AH-64, then with CH-53, and most recently with SH-2. Those things are really quiet compared to Mil family (2,8,14,17,24). The tail rotor is quite noisy, but it's high frequency noise, therefore it ain't carried in air as far as the lower frequency - main rotor noise - the same with engines. Ever noticed on air shows that when the jet is close to you, actually only thing you can hear is the whining of the compressor - the high pitch noise, but when in air, you don't hear it - you hear other noises, lower pitched.

That Apache photo is interesting, there are ATIRCM turrets on wing tips, it looks like the Army won't incorporate the AN/ALQ-212 system in a pods like on European WAH-64s, but implement whole system into the machine.

I'm a gadget freak ;) I tried those few years back... not a good investment, my head hurt after an hour of using it.

Well you can make an HDU right now, for not much money. Just buy a cheap video camera, disassemble it, plug into tv-out in your graphic card, add lenses, and combiner glass to the eye peace, and something to mount it, and you will have HDU.. but black&white ;) The VR prices will not go down. Somewhere in 1997-98 I was playing with the VFX-1, its price back then was mind boggling - a 1000 USD or more, resolution was crappy (263x230), and only things I could play on it was Tek War, Doom, and Heretic... no simulation worked ;). It was 1997. Now decade later, we have HD screens, and 'affordable' Virtual reality helmets, have max 800x640, and still cost around 1000 USD, and are 2D, the 3D that can take different inputs into screens cost twice as much. Don't wait for it.

Brad thanks for getting through this material and commenting. I agree with the representation of IHADSS being ok in sims during day operations, well everything th that would be needed is just stick to the HDU resolution, and make it a bit transparent. Yet I'm concentrating here on the night missions, so this need a lot work to do. BTW about that left eye dominance thing, and Fire Birds movie, actually my close friend is right handed, but left eye dominant, and he have a hard time shooting any weapon, just can't concentrate on it. But what's interesting, I don't know anyone else who have that kind of problem, so must be less than 1% of population.