|
Post by phil on Aug 9, 2015 18:56:13 GMT 12
Sorry mate, I don't understand your question?
|
|
|
Post by catbalu on Aug 9, 2015 19:10:56 GMT 12
Hi Phil The colour for the 'markings' I have a friend that has built a rc.nh90 and asked me if I knew the colour for the fuse and marking,so he can decals made...
cheers
|
|
|
Post by phil on Aug 10, 2015 19:24:18 GMT 12
Black.
|
|
|
Post by beagle on Sept 18, 2015 9:54:59 GMT 12
Anyone got an accurate ceiling height for the 90. seen sites where it says 20000ft and another only 10000 I suppose it all depends on what weight it is at the time as well
.
|
|
|
Post by noooby on Sept 19, 2015 6:47:11 GMT 12
20,000ft is the ceiling. 10,500ft is the IGE hover ceiling. Perhaps that is what you are thinking of? I would imagine it can go higher, but many helicopters seem list their ceiling as 20k feet.
I've been in a similarly powered helicopter at 18,500ft in the mountains and we still had a healthy climb rate and could quite easily have gone higher, but there was no point. Mountain peaks were 22k-24k in the area, so we weren't legally able to go over them anyway.
|
|
|
Post by isc on Sept 19, 2015 20:44:50 GMT 12
As you go up as you move into the high country, would the ground effect go up in proportion, not up to speed in helicopter flight theory. isc
|
|
|
Post by noooby on Sept 20, 2015 6:27:15 GMT 12
You still run out of air Difference between IGE hover and OGE hover is due to the cushion of air pushing down on the ground "helping" you hover with less power. 18k in the mountains is the same as 18k in open air once you are out of ground effect. 18k in the mountains in ground effect is not the same as 18k in open air. Ground effect lessens with altitude, otherwise you could quite happily hover IGE at your ceiling, and that just doesn't happen. Not normally anyway. Perhaps a Skycrane could do that?
|
|
|
Post by isc on Sept 20, 2015 21:33:58 GMT 12
I understand the effect of altitude/reduced pressure, but say your machine has an IGE of 10,500', you are over ground of 10,400', would the actual IGE be affected, ie would you maybe get a few hundred ft extra, or is the IGE just the absolute hover altitude. isc
|
|
|
Post by noooby on Sept 21, 2015 10:15:13 GMT 12
You've lost me If your machine has an IGE (In Ground Effect) hover of 10,500 and you are over ground of 10,400, you can still hover In Ground Effect, as the maximum demonstrated is 10,500 ft hover In Ground Effect. You will not be able to hover OGE (Out of Ground Effect) though, as that requires more energy than IGE as there is no ground to push a cushion of air onto. The max IGE hover listed in the Flight Manual is the absolute highest the machine can hover. OGE hover is always lower than IGE. There will be a chart that lists IGE hover for differing weight and temp, showing what altitude you can expect to be able to hover at, for a given day at a given weight.
|
|
|
Post by isc on Sept 21, 2015 20:43:00 GMT 12
Thanks Noooby, I know very little about the operation of helicopters, so must ask some seemingly dumb questions. The bit that does surprise me is the ceiling of 20,000ft, I'm learning. isc
|
|
|
Post by noooby on Sept 22, 2015 4:23:04 GMT 12
Are you thinking 20,ooo is high, or low? In more modern and powerful machines, it doesn't take long to get there as they can climb at upto 2000ft/min. Most helicopter pilots get scared as soon as the Thousands needle hits One, let alone the Tens of Thousands needle hitting One! They all seem to prefer being closer to the ground
|
|
|
Post by waja2000 on Sept 22, 2015 15:33:45 GMT 12
just curious to know why NH90 we getting not include FLIR in front and TopOwl helmet for pilot? specially FLIR will help a lot in SAR mission, TopOwl helmet provide more fly information to pilot, it also include night vision. FLIR in red circle
|
|
|
Post by beagle on Sept 22, 2015 17:21:40 GMT 12
comments from member "Thax" from a while ago.
The aircraft are fitted 'for but not with' the Topowl Helmet Mounted Sight and Display (HMSD). At the time of contract this equipment was still not mature (e.g. the night vision system was of a lower standard than existing ANVIS-9 NVGs and there were latency issues with the head tracker) and it was very expensive. As a mitigation against this change to design HMI, we elected to fit the fifth MFD (which is standard on the NFH (naval) variants but not on the TTH (troop) variant).
Topowl has since matured significantly and it is possible the RNZAF will look at a mid-life upgrade in this respect (if and when funding allows!).
The NH90 was offered with a piloting FLIR (not an EO system as such), but the kit offered at contract time was obsolescent and very expensive so was not taken as an option. The aircraft is fiited 'for but not with', so that a replacement FLIR could be fitted as a mid-life upgrade.
|
|
|
Post by isc on Sept 23, 2015 2:14:09 GMT 12
I was surprised at the altitude although I did know of some fairly high altitude stuff in the Himalayas, and Andes, compared to those Mt Cook is a bit of a hill with some snow on it. I imagine the MH-90 will have little problem working in our mountain areas. isc
|
|
|
Post by ErrolC on Sept 23, 2015 7:46:51 GMT 12
I believe the point is that we can reasonably want it to work (e.g. carry a full infantry squad) up a mountain in New Guinea.
|
|
|
Post by Dave Homewood on Nov 9, 2015 22:25:59 GMT 12
|
|
|
Post by beagle on Dec 9, 2015 17:36:08 GMT 12
Just wondering if anyone has seen any flying around with aux tanks fitted to the side pylons. Have seen one image ages ago in a hangar but not sure if it was here or France.
|
|
|
Post by Deleted on Dec 9, 2015 20:32:04 GMT 12
Asked about those today, apparently we haven't fitted them in New Zealand yet.
|
|
|
Post by kiwirob on Dec 9, 2015 23:34:23 GMT 12
Just wondering it the Govt will ever order more NH-90's I struggle to understand how 8 of them are enough to do the job.
|
|
|
Post by beagle on Dec 10, 2015 17:41:45 GMT 12
maybe, maybe not, maybe something bigger. The airlift replacement project includes looking at option from helo to heavy strategic. so even something like the ch53k could be an option
|
|