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Search: Posts Made By: Ahernar
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Forum: Rotorheads
8th Dec 2018, 11:57
Replies: 1,173
Views: 532,919
Posted By Ahernar

Probably yes but not in conjunction with...

Probably yes but not in conjunction with computerised control .
Just for fun - kind of amazing - 2.20
https://www.youtube.com/watch?v=Jm0JQf2mmm8
Anyway i just read that fly by wire for...
Forum: Rotorheads
8th Dec 2018, 04:41
Replies: 1,173
Views: 532,919
Posted By Ahernar

An exageration from my belly ( sort of worst...

An exageration from my belly ( sort of worst case scenario for the control system ) . I would have to calculate real rpm values . The airframe coud be further designed to lower this value , with an...
Forum: Rotorheads
7th Dec 2018, 17:27
Replies: 1,173
Views: 532,919
Posted By Ahernar

Ofc , i was meaning the rpm of the cabin !!! @...

Ofc , i was meaning the rpm of the cabin !!!
@ Uplinker
You lose TR , you spin faster and faster until at certain rpm the drag from the spinning body of the heli counterracts the rotor drag ....
Forum: Rotorheads
7th Dec 2018, 09:33
Replies: 1,173
Views: 532,919
Posted By Ahernar

Not going to argue much around this but there are...

Not going to argue much around this but there are no laws of physics preventing tailles rotor flight . You have to equalise the rotor drag with drag from the body of the aircraft . If this requires...
Forum: Rotorheads
7th Dec 2018, 05:07
Replies: 1,173
Views: 532,919
Posted By Ahernar

https://www.youtube.com/watch?v=9XMfhKxwo2c ...

https://www.youtube.com/watch?v=9XMfhKxwo2c

This made me think that with the right software and servo's you can fly down a helicopter without a working tail rotor . Biggest problem will be for...
28th Jun 2015, 08:41
Replies: 1,178
Views: 693,536
Posted By Ahernar

Actually a flock of birds is orders of magnitude...

Actually a flock of birds is orders of magnitude more dangerous for an aircraft than a drone .It's orders of magnitude bigger so it's harder to avoid /easier to hit and can do what no drone can -...
23rd May 2015, 13:09
Replies: 1,178
Views: 693,536
Posted By Ahernar

First , i'm talking about the "standard nut's "...

First , i'm talking about the "standard nut's " drone , everybody is scared about . The others are regulated , registrated , a police officer is looking over the shoulder of the operator every...
22nd May 2015, 14:01
Replies: 1,178
Views: 693,536
Posted By Ahernar

Well , the manufacturers of consumer "drones"...

Well , the manufacturers of consumer "drones" seem to be heading to the right direction .
Parrot Bebop Drone. Lightweight yet robust quadricopter - 14 megapixel Full HD 1080p Fisheye Camera -...
1st May 2015, 17:20
Replies: 1,178
Views: 693,536
Posted By Ahernar

It's a chip thinghie of some 2/2 mm . Will need a...

It's a chip thinghie of some 2/2 mm . Will need a drop of glue to disable it but then 2 things will happen .One: the inertial system will be contradicted by the baro (accels and thr tells it that is...
1st May 2015, 04:23
Replies: 1,178
Views: 693,536
Posted By Ahernar

The cure

To stop the hysteria ALL flying drones over 500g (a crow's weight) should have a mandatory baro sensor which prevents them to climb more than 400ft over start position . It's cheap ,5$ or so at the...
24th Apr 2015, 15:19
Replies: 1,178
Views: 693,536
Posted By Ahernar

Hmm

Something is off here . The visual resolution for human eye is 3-4 arcmins . And this is when are looking hard at the object in cause , not glancing it from the sky . 4 arcmins equals aproximatively...
23rd Apr 2015, 16:51
Replies: 1,178
Views: 693,536
Posted By Ahernar

In this kind of collisions mass is all that...

In this kind of collisions mass is all that counts . Every drone past 500g is dangerous . But what startles me is the loudness around the perceived threat to the passenger aviation (ridiculously...
23rd Apr 2015, 12:08
Replies: 1,178
Views: 693,536
Posted By Ahernar

Very true but I was comparing the standard cheap...

Very true but I was comparing the standard cheap (1000$ , 1 kg) drone to a single large bird .Both are dangerous but diverting traffic because of one or the other seems to be excessive . Better call...
23rd Apr 2015, 04:14
Replies: 1,178
Views: 693,536
Posted By Ahernar

"Now any fool can walk into any high-street store...

"Now any fool can walk into any high-street store and for a few pounds can purchase a large flying machine that they can fly from their back garden, with no skill required. Their thought processes...
Forum: Jet Blast
19th Apr 2015, 10:43
Replies: 757
Views: 110,215
Posted By Ahernar

Hmm - no need for a multiton battery - will be...

Hmm - no need for a multiton battery - will be powered by engine driven generator .
Changing all the engines in the world will be "slight" more challenging . Also convincing the passengers that the...
11th Apr 2015, 16:47
Replies: 1,178
Views: 693,536
Posted By Ahernar

"It is illegal to fly such a device without...

"It is illegal to fly such a device without authorisation. The drone was reportedly flying higher than 200 feet (60 metres) "

Not really sure - they would have canceled the show if there was a...
26th Mar 2015, 13:48
Replies: 3,529
Views: 4,931,952
Posted By Ahernar

About automatic planes - I would not trust a...

About automatic planes -
I would not trust a fully automatic plane - someone could tamper with the computers and aircrafts are more mobile and harder to secure against unauthorised access than the...
Forum: Jet Blast
24th Mar 2015, 04:53
Replies: 757
Views: 110,215
Posted By Ahernar

787 is about 1 to 2 percent more efficient in...

787 is about 1 to 2 percent more efficient in cruise acording to Boeing. It was a slight gamble to bring up such an amount of new technology in a single package and almost backfired (the lithium...
Forum: Jet Blast
6th Mar 2015, 04:07
Replies: 757
Views: 110,215
Posted By Ahernar

@Bokkenrijder Yeah , i will stop posting...

@Bokkenrijder

Yeah , i will stop posting here , im just an IT guy with a mild interest in aviation ,arrived here looking for more info after the Trans Asia crash because i was bewildered how...
Forum: Jet Blast
5th Mar 2015, 17:16
Replies: 757
Views: 110,215
Posted By Ahernar

" Between 1950 and 1992, BA monitored 6,209...

"
Between 1950 and 1992, BA monitored 6,209 pilots and 1,153 flight engineers comprising 143,500 person years of observation. The results were encouraging and revealed that life expectancy for long...
5th Mar 2015, 09:05
Replies: 1,178
Views: 693,536
Posted By Ahernar

http://www.morrisoninnovations.com/wp-content/uplo...

http://www.morrisoninnovations.com/wp-content/uploads/2014/11/IMG_2609-e1415678052991.jpg


These will not get meaningfull strobes ever . I know that the majority here would try to get drones to...
5th Mar 2015, 07:45
Replies: 1,178
Views: 693,536
Posted By Ahernar

This kind of pictures can be made with a drone...

This kind of pictures can be made with a drone under 500g in weight (and with today's technology) .
IMO i would treat "drones" very differently based on weight class . How to differentiate them by...
Forum: Jet Blast
26th Feb 2015, 09:23
Replies: 757
Views: 110,215
Posted By Ahernar

House of Lords - Science and Technology - Fifth...

House of Lords - Science and Technology - Fifth Report (http://www.publications.parliament.uk/pa/ld199900/ldselect/ldsctech/121/12107.htm)


4.38 Rolls-Royce stated that all current TCP used in...
Forum: Jet Blast
25th Feb 2015, 17:34
Replies: 757
Views: 110,215
Posted By Ahernar

If the engine temp is lower than the point when...

If the engine temp is lower than the point when oil degradation starts (and it is ,logically , otherwise planes would top up tonnes of oil at every stop ) then the hot oil is the very same with the...
Forum: Jet Blast
23rd Feb 2015, 08:59
Replies: 757
Views: 110,215
Posted By Ahernar

Test can be manipulated but only by some degree...

Test can be manipulated but only by some degree and also all the competition has to do the same basic thing . You will not convince a tank to get 50mpg regardless of tricks . Same here - there is...
Showing results 1 to 25 of 28
 


 
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