Air Transport - Science topic

When will emission-free aviation be established?

I presume it is viable, likely to be the case, because this is being studied, on the process of to bring to functionality. My son Damon, understandably on the process of through team.

Regards,

Fatema Miah

I think as per my suggestion, exogenous theory is better support this relationship. As FDI is the external factor for the host country. While some one can use innovation as both endogenous and exogenous variable.

BASA's are bound to disappear, replaced by open skies schemes, and this is a topic to be addressed. Flag/legacy carriers are also to be extinct, substituted by airline consolidation (e.g. AF/KL, BA/IB). There are too many airlines flying international, a few of them really profitable

Dear Othmane To prevent the spreading of the COVID-19🦠😷 almost all the countries ban air transport between the countries and even within the country. The consequence of this air transport sector lost more than 250 billion dollars

Dear Prof. Ottomanelli!

I have filled in the survey, you posted. It was a nice experience. May I kindly recommend you a B2B - platform - the registration is for free, and there are many free of charge webinars, etc. resources you might benefit from:

1) Please check out: https://www.brighttalk.com/join/

2) https://www.brighttalk.com/communities/research-and-development/

3) A recent webinar: Patrick Keliher, Regional FAE Manager (RTI) and Maxx Becker, Field Application Engineer (RTI) (2021). On the High Speed Data Line: Accelerating the Evolution of Rail Transportation, March18 2021, Please see further details at: https://www.brighttalk.com/webcast/18279/473029?utm_source=brighttalk-portal&utm_medium=web&utm_content=transportation%20&utm_term=search-result-2&utm_campaign=webcasts-search-results-feed

Yours sincerely, Bulcsu Szekely

The only important parameter to guarantee sustainable aviation is the transition to new synthetic green biofuels.

Thanks all, I got it from https://openflights.org/data.html

and I created a database of Air transport.

All industries will be affected due new measures introduced to control Covid-19. Economic aspects in the production is directly affected by the sick workers!.

Hi Eises,

Check this link:

https://scholar.google.co.in/scholar?hl=en&as_sdt=0%2C5&q=single+African+air+transport+management&btnG=

Mode choice analysis between air and other competitive modes, if any

Please see the following discussion

Best Regards Manigandan Sekar

Surveying burn areas, fire movement, damage/impact. Looking for survivors.

you may also check these

It depends a bit on what aspect of the fire-fighting you focus:

- For the assessment phase, typically quite standard UAV's are used. These are typically sturdier models that feature a short deployment time and are often also used by civil protection, police, ...

- For the fire-extinguishing phase, purpose-built solutions do exist, e.g.: https://www.aerones.com/eng/firefighting_drone/

Dear Charles,

Thank you very much for your message and for the valuable documents. I am also very actively involved in this line of research. A recent paper on GNSS performance threats and augmentation strategies in aviation was recently published in JPAS (for convenience, the link is provided below):

In addition to addressing GNSS issues, it would be nice working together and investigating the feasibility of specific safety features that could be included in the ADS-B data-link as well.

Dear Olav

Yes, in my opinion Hydrogen operated vehicles are better suited for long ranges I believe that that is the future.

It is true, as Ali says, that you need to have a mean to produce energy, the electric cell, however the utilization of electricity available in the case of batteries or generated in hydrogen cell have the same consumer: the electric motors that move the wheels

Also you need an extra space in the car to storage the hydrogen, perhaps, albeit I don't know it, the hydrogen tanks can be located in the lower part of the vehicle as the batteries.

In both cases, energy needs to be spent in the production of hydrogen and in charging the batteries

However, it appears from my perspective, that batteries have the advantage of using energy produced by the car when desaccelerating or braking, and I don't know if the same can be applied to hydrogen cells.

However, the very large advantage of the hydrogen cell is for large distances, since the hydrogen tank can be probably completed in the same time that it takes now to fill a gasoline tank. However, both cases, cell or battery are conditioned to the existence of refilling and charging stations.

From this point of view the battery needs some time to be charged from several hours to may be 25 minutes.

Another factor to consider is weight. It rests to be see, which is lighter the battery or the cell

Regarding how green both alternatives are all depends on the generation source. If both use hydroelectricity, they are the same.

I think this is a good question. Noise is a drawback for rotocraft.

But it is unavoidable, like helicoper. But we can reduce it with low rotation speed. Increase the dimension and number of blades is good choice. If you want to eliminate the noise, maybe you can try fixed wing or flap wing.

Thanks -- appreciate these references.

The+potential+of+the+long-haul+low-cost+business+model+and+its+impact+on+the+Netherlands.pdf

and others research and publications from these authors

Dear Md Shafi in Shukor 

 As integral parts of the social fabric of communities across the world, buses and coaches are lifelines to work, education, leisure and tourism. A transport system acts as a bridge between places of tourist origin and destination.  There is a general agreement that tourism expands more when there are better transportation systems. Many researchers had carried out research under broader theme of "development of infrastructure and growth of tourism" under which they had considered every aspect of transportation. However, there is limited paper available for a specific mode of transportation like buses (As per my knowledge, because for similar research,I found very few paper) . As you know Buses for tourism purposes are always subject to regional policy and laws. Like in India, a tourist has many options for buses like State-owned, privately owned, Tour Operator Owned, Public Bus/Both Privately and State-owned, which are allowed to roam very state as they are having National Permit.At the Meantime, they are registered in the different state too. as you know Efficiency is the (often measurable) ability to avoid wasting materials, energy, efforts, money, and time in doing something or in producing a desired result. So in terms to find efficiency of their operation you need to be very selective and careful.

Yes,there are already lot of articles on it.

Journal of Air Transport Management

Hello,

the following paper may be a reference;

Price elasticities of demand for passenger air travel: a meta-analysis

M Brons, E Pels, P Nijkamp, P Rietveld - Journal of Air Transport , 2002 - Elsevier

Privatization of airports is generally done in other countries to allow airports access to private financial markets to facilitate the massive amounts of capital needed for airport infrastructure development projects...and to reduce, if not eliminate the drain airports have on the public expenses so that those monies can be used to address other public concerns.

Yes. Just returned the corrected proof to the publisher. I have sent you an email from dgameli2002@gmail.com. You may check your spam (junk) mail folder if you d not fund it in the inbox.

Historically speaking, another policy aspect to look into is state support of national airlines for the purpose of building a national identity. In the process of improving air transport infrastructure, image-building objectives could be fulfilled--or at least that's what the objective was. I link to an article discussing such efforts in Southeast Asia.

Respected Sir,

Apologies for the delay. I was in a training. Your suggestion seems to be a better one considering the severity of aqua planing and the lack of proper stopways and RESA in indian airports. I'll place this question in our department safety forum and update you the opinions and suggestions.

Regards.

As an Air Traffic Controller, I like my instructions to be understood by the pilots. If both of us are going to follow different languages as a medium of radio telephony, then imagine the confusion! Already we are facing the problem of phonetics and different pronunciation among all the stake holders in aviation like pilots,ATCOs and ground crew.The use of non-standard procedures and phraseology can cause

misunderstanding. Incidents and accidents have occurred in which a contributing

factor has been the misunderstanding caused by the use of non-standard

phraseology.

The worst accident in aviation history i.e.,Tenerife collision between two B747s on 27/03/1977 was due to non standard R/T only. So standard and uniform R/T is a must for safe operations. Language was a part of important factor in many accidents like Milan Linate airport MD10 and a Cessna. etc

Follow the link to know about the english tests satisfying the ICAO SARPs for Language proficiency requirements.

Regarding the air traffic through out the world check ACI (www.aci.aero) or IATA (www.iata.org). They are publishing the air statistics regularly in their sites.

If you feel I may be of further helps,please inform me.

Regards and best wishes.

Find attached some articles I saw on the internet.

@Sardar, just listen the answer!

Your question is not very clear...