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by mxaxai
Sun Jan 23, 2022 8:56 pm
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

I think it should be pointed out that it's been a political agenda to downsize the regulatory authorities in general and then to often staff the executive positions with people with a non-technical background and an anti-regulatory stance. You get the government you elect. Small government and lean...

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by mxaxai
Sun Jan 23, 2022 11:33 am
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

The solution is simple. C band band pass filters for radar applications are already on the market as a standard product. Exactly. Well, I'm not sure if the exact filters that are needed are already available, but it's a relatively minor challenge compared to the ground-based solutions some are adve...

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by mxaxai
Sat Jan 22, 2022 10:07 pm
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

Not a link, but should be easy to find - Polish presidential aircraft crash. Pilot was trying to land in dense fog, descended by radalt - and ended up flying below runway level and into rising terrain. The crew of that flight attempted to descend below the published minimums and ignored the warning...

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by mxaxai
Sat Jan 22, 2022 6:31 pm
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

Radio altimeters are simple yet precise devices that work without external infrastructure or databases. They're relatively immune to environmental influences and don't need recalibration in-flight. Literally the only drawback is that they're sensitive to RF interference, which wasn't an issue until ...

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by mxaxai
Sat Jan 22, 2022 10:35 am
Forum: Civil Aviation
Topic: KDEN GPS, Transponder, ADS-B Anomalies 1/21/2022
Replies: 9
Views: 2163

Re: KDEN GPS, Transponder, ADS-B Anomalies 1/21/2022

GPS and ADS-B use fairly separate frequencies, so either there are two jammers (intentionally or not, malfunctioning devices can create strong interference too) or a very broadband jamming device. The military does have such devices. The USAF next generation low band jammer has a broad range from 50...

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by mxaxai
Thu Jan 20, 2022 9:32 pm
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

The faa.gov/5g chart published in this thread says the US 5G transmit power levels are in the 1.5 kilowatt range. At the risk of over-simplifying things, I don't feel it's hard to see how a 1500 watt direct path signal can override a 0.5 watt signal reflected off the earth. Note: Urban 5G base stat...

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by mxaxai
Wed Jan 19, 2022 8:26 pm
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

it's obvious that the radar altimeters in question were designed in an unsafe way (assuming frequencies not assigned to the service would forever be clear) that happened to be lucky up until now. The original designs (or rather, the certification requirements) were safe for the environment at the t...

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by mxaxai
Wed Jan 19, 2022 7:17 pm
Forum: Technical/Operations
Topic: No-wind conditions at parallel runway airports:
Replies: 9
Views: 1301

Re: No-wind conditions at parallel runway airports:

rjsampson wrote:
Where traffic and weather permits, is it common for pilots to request departures other than the active departure runway to gain favorable fuel-savings? If not, why?

I wouldn't call it common but it does happen occasionally at smaller airports or during less busy times.

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by mxaxai
Wed Jan 19, 2022 7:09 pm
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

So, they don't name the two RADALT models they approved or what process they used to approve them. They also only address Boeing and Airbus models, no regional or business airplanes. One of the models is most likely the Rockwell-Collins LRA-2100 , which is the default on the A350 but has been fitte...

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by mxaxai
Wed Jan 19, 2022 6:55 pm
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

RJs either wait their turn for review or are all problematic. Many RJs aren't equipped for low-visibility (ILS CAT II / III), or their pilots aren't certified / trained to use it. It's a relatively small issue, operationally, to cancel or delay short haul flights for weather, while maintaining the ...

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by mxaxai
Wed Jan 19, 2022 5:56 pm
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

RJs either wait their turn for review or are all problematic. Many RJs aren't equipped for low-visibility (ILS CAT II / III), or their pilots aren't certified / trained to use it. It's a relatively small issue, operationally, to cancel or delay short haul flights for weather, while maintaining the ...

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by mxaxai
Wed Jan 19, 2022 4:50 pm
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

kalvado wrote:
Looks like altimeters - relatively high power transmitters - evaded being certified.

Altimeters - like any other transmitter - are certified by the FCC to ensure that they only transmit in their assigned band.
The FCC doesn't care whether your device can handle interference from other transmitters.

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by mxaxai
Tue Jan 18, 2022 5:46 pm
Forum: Military Aviation & Space Flight
Topic: Thai government okays buying 4 new fighters
Replies: 18
Views: 2215

Re: Thai government okays buying 4 new fighters

SQ's initial F-35 order is for only 4 F-35B. Perhaps Thailand wants some too.

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by mxaxai
Mon Jan 17, 2022 7:50 pm
Forum: Military Aviation & Space Flight
Topic: French air force increases aircraft readiness rates
Replies: 38
Views: 2935

Re: French air force increases aircraft readiness rates

Air France get get 90%+ on a 777. Every day every year. 90% would be disastrous for a commercial aircraft. The SSJ - known for its "horrible russian reliability" - reportedly sits at around 97%. Boeing and Airbus widebodies have a target of 99.5% (+-0.1%). Those figures don't include sche...

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by mxaxai
Fri Jan 14, 2022 2:58 pm
Forum: Military Aviation & Space Flight
Topic: Germany Tornado Replacement News and Discussion Thread
Replies: 1709
Views: 258913

Re: Germany Tornado Replacement News and Discussion Thread

https://boeing.mediaroom.com/news-relea ... tem=130986
-->

Boeing still sees a future for their Super Hornet bid and has sent an RFI to multiple German companies for industrial cooperation. https://boeing.mediaroom.com/news-relea ... tem=130986

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by mxaxai
Fri Jan 14, 2022 12:59 pm
Forum: Military Aviation & Space Flight
Topic: French air force increases aircraft readiness rates
Replies: 38
Views: 2935

French air force increases aircraft readiness rates

Through a 4-year program initiated by Florence Parly in 2018, France has managed to improve the readiness rates of all systems. Tweet by the spokesman of the ministry of defence with an excerpt: https://twitter.com/HerveGrandjean/status/1479487552050675713/photo/1 https://pbs.twimg.com/media/FIgyFhA...

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by mxaxai
Thu Jan 13, 2022 9:10 pm
Forum: Military Aviation & Space Flight
Topic: EU SATOC - Strategic Air Transport for Outsized Cargo
Replies: 88
Views: 6794

Re: EU SATOC - Strategic Air Transport for Outsized Cargo

How useless would a conversion program for low hour retired A380 aircraft be for this need? Wasn't there a plan for the A380 to have a freight version originally? Is it possible to do some sort of "super duper beluga" conversion for it? It would be pretty expensive. The two floors inside ...

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by mxaxai
Sun Jan 09, 2022 12:47 pm
Forum: Civil Aviation
Topic: BA A350 tail strike at Heathrow on Jan. 2
Replies: 76
Views: 21974

Re: BA A350 tail strike at Heathrow on Jan. 2

I still think it's amazing that a fox could get into LHR. If it tunnelled under the perimeter fence, wouldn't security sensors be triggered ? Can't believe it just casually strolled in daylight past airside access gate security posts. Plus it wasn't spotted by the tower ? They probably live there. ...

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by mxaxai
Sun Jan 09, 2022 12:05 pm
Forum: Civil Aviation
Topic: Delta Drops Long-Time College Degree Requirement for New Hire Pilots
Replies: 89
Views: 9734

Re: Delta Drops Long-Time College Degree Requirement for New Hire Pilots

Nobody I know finished their degree in the time that was scheduled by the universíty and yet they all have great careers and are excellent engineers. None of my employers ever asked why I took more time. Personally, I would much rather work with someone who has lots of experience than someone who op...

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by mxaxai
Sat Jan 08, 2022 8:46 pm
Forum: Civil Aviation
Topic: Aviastar TU204 freighter catches fire in Hangzhou
Replies: 55
Views: 10854

Re: Aviastar TU204 freighter catches fire in Hangzhou

Ive noticed people are surprised that the airframe has to put it another way "melted" at the back and there is speculation that it's down to lithium batteries. The first major fire on the ground that I remember was the Manchester Airport disaster in 1985. No lithium batteries involved the...

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by mxaxai
Sat Jan 08, 2022 10:26 am
Forum: Technical/Operations
Topic: Overconfidence In Aviation Technology
Replies: 27
Views: 1780

Re: Overconfidence In Aviation Technology

The first person to stall a plane and die was probably, what 1903? 1904? If we include gliders, the first person to stall, crash and die was probably Otto Lilienthal in 1896. Nobody believes that computers are immune to failure. That's why they're usually in triple-redundancy, as well as many other...

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by mxaxai
Sat Jan 08, 2022 10:09 am
Forum: Military Aviation & Space Flight
Topic: Germany Tornado Replacement News and Discussion Thread
Replies: 1709
Views: 258913

Re: Germany Tornado Replacement News and Discussion Thread

Do we have any more info on the current status of the updates to Tranche 2&3 aircraft, as well as the capabilities of Tranche 4? This was the initial Airbus press release: https://www.airbus.com/en/newsroom/news/2020-12-keeping-eurofighter-at-the-leading-edge-of-combat-aircraft-technology Does ...

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by mxaxai
Fri Jan 07, 2022 7:57 am
Forum: Military Aviation & Space Flight
Topic: EU SATOC - Strategic Air Transport for Outsized Cargo
Replies: 88
Views: 6794

Re: EU SATOC - Strategic Air Transport for Outsized Cargo

Does anyone know what oversized items Europe is transporting by air? ⋅ Helicopters (NH-90, Tiger, CH-53) ⋅ Large vehicles and AFVs (Canada used them to bring some Leopard 2 tanks to Afghanistan, probably the heaviest piece of cargo these aircraft saw) ⋅ Food, supplies ...

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by mxaxai
Thu Jan 06, 2022 9:15 pm
Forum: Military Aviation & Space Flight
Topic: Airbus A400M News, Production and Delivery Thread - 2022
Replies: 4
Views: 933

Re: Airbus A400M News, Production and Delivery Thread - 2022

The British order has always been somewhat small for a country that takes pride in its ability to operate around the globe. Wouldn't it be significantly cheaper to order new C-130J as a replacement for the worn-out ones, though?

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by mxaxai
Thu Jan 06, 2022 8:28 pm
Forum: Civil Aviation
Topic: Lufthansa Group Fleet Thread - 2022
Replies: 51
Views: 13539

Re: Lufthansa Group Fleet Thread - 2022

Opus99 wrote:
That’s a very massive and unnecessary threat.

I'm sure that they mean LH mainline only. Short haul feeders would be transferred to Cityline or EW branded as LH to achieve lower wages.

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by mxaxai
Thu Jan 06, 2022 8:25 pm
Forum: Civil Aviation
Topic: Kazakhstan Protests: Protestors occupy Almaty Airport
Replies: 28
Views: 4844

Re: Kazakhstan Protests: Protestors occupy Almaty Airport

8 law enforcers killed and 317 police officers and national guard troops wounded. https://tass.com/world/1384269 Also "dozens" of protestors killed and more than 1000 civilians injured. 2000 people have been detained. https://www.nytimes.com/live/2022/01/06/world/kazakhstan-protests This ...

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by mxaxai
Thu Jan 06, 2022 5:27 pm
Forum: Military Aviation & Space Flight
Topic: EU SATOC - Strategic Air Transport for Outsized Cargo
Replies: 88
Views: 6794

Re: EU SATOC - Strategic Air Transport for Outsized Cargo

Does anyone know what oversized items Europe is transporting by air? ⋅ Helicopters (NH-90, Tiger, CH-53) ⋅ Large vehicles and AFVs (Canada used them to bring some Leopard 2 tanks to Afghanistan, probably the heaviest piece of cargo these aircraft saw) ⋅ Food, supplies ...

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by mxaxai
Thu Jan 06, 2022 10:43 am
Forum: Technical/Operations
Topic: Do gate size restrictions matter for freighters
Replies: 19
Views: 1753

Re: Do gate size restrictions matter for freighters

To me, the bigger question is for high capacity short range airplanes. UPS and FedEx already operate MD11s on RJ routes. The A330 is already too much airplane for those routes, the A350 would be even moreso. Boeing will sell you a 767F for exactly that kind of high-capacity short range mission. The...

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by mxaxai
Wed Jan 05, 2022 8:08 pm
Forum: Military Aviation & Space Flight
Topic: EU SATOC - Strategic Air Transport for Outsized Cargo
Replies: 88
Views: 6794

Re: SATOC - Strategic Air Transport for Outsized Cargo

Or with six TP400 engines? I don't think anybody is going to choose the TP400 when alternatives exist. Sure, it's a powerful and very advanced engine that serves the A400M well, but it's expensive to buy, operate and maintain, and the corporate/political structure behind it is too complex to turn i...

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by mxaxai
Wed Jan 05, 2022 7:36 pm
Forum: Military Aviation & Space Flight
Topic: Canada - Future Fighter Capability Project
Replies: 428
Views: 100638

Re: Canada - Future Fighter Capability Project

bikerthai wrote:
Hypothetically, I don't believe there exists a country in the world who can successfully invade and occupy Canada.

bt

I think the US could. About 80% of the Canadian population lives within 100 miles of the border.

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by mxaxai
Wed Jan 05, 2022 7:30 pm
Forum: Technical/Operations
Topic: Do gate size restrictions matter for freighters
Replies: 19
Views: 1753

Re: Do gate size restrictions matter for freighters

OK. consensus seems to be that it'd need to be a freighter with a very specific long distance mission from airports with plenty of ramp space where it could possibly make sense. Thanks. Correct. For true long haul freighters like the 747 or the 777, efficiency matters a lot more and acquisition cos...

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by mxaxai
Tue Jan 04, 2022 7:55 pm
Forum: Technical/Operations
Topic: Do gate size restrictions matter for freighters
Replies: 19
Views: 1753

Re: Do gate size restrictions matter for freighters

At 99% of airports worldwide it's not going to matter, but the 1% where it does are the cargo hub airports that (nearly) every freighter serves. SDF, LEJ, MEM, HKG, ... In addition, winglets not only change the airflow but also the structural loads on the wing. Adding winglets might require strength...

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by mxaxai
Tue Jan 04, 2022 6:26 pm
Forum: Technical/Operations
Topic: Do gate size restrictions matter for freighters
Replies: 19
Views: 1753

Re: Do gate size restrictions matter for freighters

Yes, most airports have freighter stand markings similar to passenger gates. Obivously you don't need to line up with a jetbridge so there's usually more flexibility. Any larger cargo ramp could accomodate the An-225 if necessary. But aircraft with higher wingspan still need more space than smaller ...

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by mxaxai
Mon Jan 03, 2022 11:18 pm
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

Oversold or not, but here in upstate NY 5G is clearly aimed as a leap over fiber technology which was sold as best thing ever, but had costs beyond the reach. What is the cost of struggling with providing Internet connection to families during covid days? Well, it may be very nontrivial. Eh, I expe...

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by mxaxai
Mon Jan 03, 2022 7:46 pm
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

So the radios in the aircraft have poor filtering and need to be upgraded is what I took from this thread. It isnt like the aviation industry had years to prepare for day or something. What kind of design has that kind of variance? +-200Mhz? To me that screams poor design because at the time the co...

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by mxaxai
Mon Jan 03, 2022 2:06 pm
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

So does the NTSB have anything to say and or contribute to this issue even say in testing, or do they have to wait until there is an incident before they deploy their assets? Yes I know the FAA will not readily get them involved if there are no incidents as their mandates are not as single focus, w...

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by mxaxai
Sun Jan 02, 2022 9:56 pm
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

I dislike how every single pro-5G piece emphasizes the economic importance of 5G. That argument should have no place in a safety-focused discussion. Even though I agree with many points of the telecommunication industry (200 MHz guard should be enough, problem can be easily solved with upgraded/new ...

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by mxaxai
Thu Dec 23, 2021 11:13 am
Forum: Military Aviation & Space Flight
Topic: Order: up to 169x Airbus H160M Guepard for France.
Replies: 9
Views: 2325

Re: Order: up to 169x Airbus H160M Guepard for France.

This is a smaller helicopter than the Blackhawk. About 2,400hp vs 3,800 hp. Each still seats about 10. Weird that deliveries don't start until 2027. Wow that's expensive. That's just under $70M each .. a non-ASW Blackhawk is closer to maybe $35M. "The H160M Guépard will be equipped with the Sa...

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by mxaxai
Wed Dec 22, 2021 10:45 pm
Forum: Technical/Operations
Topic: Very basic question for pilots: How do airliners slow down when they are already at flight idle?
Replies: 31
Views: 3083

Re: Very basic question for pilots: How do airliners slow down when they are already at flight idle?

GalaxyFlyer wrote:
It’s rare you need both and probably more drag and quick energy loss than is advisable.

True, although there are some GA planes with linked speed brakes and flaps (so there's only one lever that moves both simultaneously). Makes steep descents really simple.

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by mxaxai
Wed Dec 22, 2021 10:10 pm
Forum: Technical/Operations
Topic: Very basic question for pilots: How do airliners slow down when they are already at flight idle?
Replies: 31
Views: 3083

Re: Very basic question for pilots: How do airliners slow down when they are already at flight idle?

Do any aircraft prohibit simultaneous use of speed brakes and flaps? In my experience, the speed brakes usually get stowed before flaps are extended but I'm not sure if this is required or just a choice by the crews.

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by mxaxai
Wed Dec 22, 2021 9:59 pm
Forum: Military Aviation & Space Flight
Topic: Order: up to 169x Airbus H160M Guepard for France.
Replies: 9
Views: 2325

Re: Order: up to 169x Airbus H160M Guepard for France.

Official French press release: https://www.defense.gouv.fr/salle-de-presse/communiques/communique_le-ministere-des-armees-notifie-a-airbus-helicopters-le-contrat-d-acquisition-et-de-soutien-de-169-helicopteres-interarmees-legers-guepard [French] Airbus press release: https://www.airbus.com/en/newsro...

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by mxaxai
Wed Dec 22, 2021 1:52 pm
Forum: Military Aviation & Space Flight
Topic: James Webb Space Telescope has a launch date: Dec 18 2021
Replies: 71
Views: 9194

Re: James Webb Space Telescope has a launch date: Dec 18 2021

As for why JWST need to circle around the L2 point itself I don't really know, all I know is that this is common for other observatories sent here. And not only circular movements, some have moved in a figure of eight. Halo orbits are solutions to the three-body-problem similar to the Lagrange poin...

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by mxaxai
Tue Dec 21, 2021 11:37 pm
Forum: Non-Aviation
Topic: WP: Manchin will not vote for Build Back Better
Replies: 167
Views: 7979

Re: WP: Manchin will not vote for Build Back Better

Norway's wealth comes mostly from abundant natural resources, gas and oil in particular. Manchin's West Virginia is similarly rich in resources, mostly coal and timber in his case. It is unsurprising that he doesn't want to see his exceptional wealth get distributed to other less well off states.

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by mxaxai
Tue Dec 21, 2021 9:46 pm
Forum: Non-Aviation
Topic: WP: Manchin will not vote for Build Back Better
Replies: 167
Views: 7979

Re: WP: Manchin will not vote for Build Back Better

Today’s WSJ has an article US household durable goods spending is up 45% over 2018, while the EU’s household spending is up 3%. Too much money chasing too few goods equals inflation the government can’t fix without pain. The US military budget is four times higher than that of the EU, the unemploym...

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by mxaxai
Fri Dec 17, 2021 11:54 pm
Forum: Civil Aviation
Topic: United CEO Tells Senate Panel that 100 Regional Jets are Grounded Because of the Pilot Shortage
Replies: 153
Views: 16100

Re: United CEO Tells Senate Panel that 100 Regional Jets are Grounded Because of the Pilot Shortage

This was true 5 years ago. It's not true anymore. There is a pilot shortage, period. There are plenty of pilots in Europe or Asia who'd be more than happy to fly in the US for decent wages. Currently, those pilots end up with the ME3 who simply hire as many expats as they need with a near-unlimited...

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by mxaxai
Fri Dec 17, 2021 4:32 pm
Forum: Civil Aviation
Topic: Airbus A220 Sales Campaign Thread - 2021
Replies: 574
Views: 103846

Re: Airbus A220 Sales Campaign Thread - 2021

MIflyer12 wrote:
You can't tell a gate agent who's been handling six departures in an 8-hr shift 'Now you're going to handle ten departures because variable costs of an A220 are so much cheaper!'

Why not? The gate agent is paid per hour not per departure.

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by mxaxai
Thu Dec 16, 2021 7:26 pm
Forum: Military Aviation & Space Flight
Topic: RAF Typhoon Shoots Down Drone
Replies: 33
Views: 3630

Re: RAF Typhoon Shoots Down Drone

It is a dilemma, but until there is an effective system developed, you'll just have to eat the cost. Similar to how Israel use their expensive Iron dome to shoot down cheap rockets bt Or similar to how western air forces use precision guided bombs and missiles worth $200,000 to punch holes in tents...

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by mxaxai
Sat Dec 11, 2021 9:17 am
Forum: Military Aviation & Space Flight
Topic: Finland selects F-35A for F-18 replacement
Replies: 247
Views: 81847

Re: Finland selects F-35A for F-18 replacement

N328KF wrote:
Do they have tailhooks? I seem to recall from AvWeek in the 1990s that the Finns liked having these on their Hornets.

Don't all F-35A have tailhooks? I'm not sure if that's optional equipment.

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by mxaxai
Thu Dec 09, 2021 8:00 am
Forum: Civil Aviation
Topic: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference
Replies: 492
Views: 60956

Re: FAA to prohibit many flight operations due to risk of ‘5G’ wireless interference

I wonder how much radiation in flight wifi or even a home wifi router creates compared to the radiation coming off a cell tower? and I know a lot of in home wifi routers are now using 5G as well (the new one i got when we switched to fiber optic a few weeks ago is 5G) 5G base stations can use anten...

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