Airbus Sets High Hopes For The Future Of Electric Powered Aircraft By Kevin W...Kevin Woodbridge
This April Airbus successfully tested an electric aircraft called the E-Fan 2.0 over the skies of France.
The 2 passenger aircraft was designed from the ground up as an electric airplane versus previous attempts by other aircraft manufacturers which utilized existing fuel burning based frames that were modified to utilize battery power resulting in poor performance. The plane was in response to the European Commissions “Flight path2050” , a plan to reduce carbon dioxide emissions by 75%and nitrous oxide emissions by 90% by 2050. The E-Fan 2.0 releases no emissions and is virtually silent, a major selling point of electric aircraft as airports worldwide are under tighter scheduling restrictions due to the increasing noise pollution.
The Airbus E-Fan 2.0 was built from the ground up with the intention of being electric powered. It has a wingspan of31 feet and can carry two people. The E-Fan has three electric motors and are powered by two 250V Lithium ion polymer batteries from a Korean battery manufacturer named KOKAMI. The batteries have no cooling system but rather use airflow to keep them from overheating. Due to the carbon fiber composite structure the planes weighs in at only 1100 lbs when empty and one reason for the success of the plane since batteries wee usually a weight issue in previous electric aircraft. The E-Fan can fly for almost an hour at cruising speed of 100 mph with a maximum of 124 mph.
Airbus is working on constructing a fleet of E-Fans for training pilots and will debut a 4 seater hybrid which will have extended flight time. A commercial hybrid airplane is expected to debut by 2030and expected to carry between 70 and 90 passengers.
What I thought was most compelling about the planned commercial aircraft is that Airbus believes it will be 50 times cheaper to operate than running the traditional fossil fuel based aircraft. More importantly is the fact that when governments put in place regulations to control pollution or incentives to use alternative forms of energy businesses react.
Generation Y makes up 25% of the workforce today, and their numbers are growing rapidly. These new entrants into the workforce expect even more from their work experience than their Gen X and Baby Boomer counterparts, making it really important that businesses understand the unique characteristics of this group. What technologies do they consider essential? What’s the impact of their social behavior? Are they really that social as everyone says? What about the social media trends, do we need to embrace them in the enterprise?
Airbus Sets High Hopes For The Future Of Electric Powered Aircraft By Kevin W...Kevin Woodbridge
This April Airbus successfully tested an electric aircraft called the E-Fan 2.0 over the skies of France.
The 2 passenger aircraft was designed from the ground up as an electric airplane versus previous attempts by other aircraft manufacturers which utilized existing fuel burning based frames that were modified to utilize battery power resulting in poor performance. The plane was in response to the European Commissions “Flight path2050” , a plan to reduce carbon dioxide emissions by 75%and nitrous oxide emissions by 90% by 2050. The E-Fan 2.0 releases no emissions and is virtually silent, a major selling point of electric aircraft as airports worldwide are under tighter scheduling restrictions due to the increasing noise pollution.
The Airbus E-Fan 2.0 was built from the ground up with the intention of being electric powered. It has a wingspan of31 feet and can carry two people. The E-Fan has three electric motors and are powered by two 250V Lithium ion polymer batteries from a Korean battery manufacturer named KOKAMI. The batteries have no cooling system but rather use airflow to keep them from overheating. Due to the carbon fiber composite structure the planes weighs in at only 1100 lbs when empty and one reason for the success of the plane since batteries wee usually a weight issue in previous electric aircraft. The E-Fan can fly for almost an hour at cruising speed of 100 mph with a maximum of 124 mph.
Airbus is working on constructing a fleet of E-Fans for training pilots and will debut a 4 seater hybrid which will have extended flight time. A commercial hybrid airplane is expected to debut by 2030and expected to carry between 70 and 90 passengers.
What I thought was most compelling about the planned commercial aircraft is that Airbus believes it will be 50 times cheaper to operate than running the traditional fossil fuel based aircraft. More importantly is the fact that when governments put in place regulations to control pollution or incentives to use alternative forms of energy businesses react.
Generation Y makes up 25% of the workforce today, and their numbers are growing rapidly. These new entrants into the workforce expect even more from their work experience than their Gen X and Baby Boomer counterparts, making it really important that businesses understand the unique characteristics of this group. What technologies do they consider essential? What’s the impact of their social behavior? Are they really that social as everyone says? What about the social media trends, do we need to embrace them in the enterprise?
2. ΜΝΗΜΗ RAM
Η μνήμη RAM
λειτουργεί σε συνεργασία
με τον επεξεργαστή.
Λειτουργεί μόνο όταν
έχουμε ανοιχτό τον
υπολογιστή.
Είναι μία μνήμη η οποία
αποθηκεύει πληροφορίες
και δεδομένα για
λογαριασμό του
επεξεργαστή.
3. ΜΝΗΜΗ RAM
Ο επεξεργαστής, επεξεργάζεται
διάφορα δεδομένα και θέλει έναν
προσωρινό χώρο, για να αποθηκεύσει
δεδομένα, αποτελέσματα, κλπ. Τη
δουλειά του αποθηκευτικού αυτού
χώρου για λογαριασμό του, την κάνει
η μνήμη RAM.Έτσι, όταν πχ ο
επεξεργαστής επεξεργάζεται κάτι,
"παίζει" συνέχεια με την RAM,
"πηγαινοφέρνοντας" συνέχεια
δεδομένα από και προς αυτήν.
Λόγω των τεράστειων δυνατοτήτων
επεξεργασίας σε κλάσματα
δευτερολέπτων, χρειάζεται και αρκετά
μεγάλη RAM για να συσσωρεύσει
μεγαλύτερο όγκο δεδομένων.
4. ΜΝΗΜΗ RAM
Αν η RAM δεν είναι
αρκετά μεγάλη ώστε
να εξυπηρετήσει
πλήρως τις ανάγκες
αποθήκευσης των
δεδομένων του
επεξεργαστή, τότε ο
επεξεργαστής δεν
λειτουργεί σε πλήρη
ισχύ, αλλά πιο "αργά".
5. MNHNH ROM
Η μνήμη ROM
λειτουργεί σε εντελώς
άλλη φιλοσοφία με τις
προαναφερθέντες.
Η μνήμη αυτή δεν έχει
ως σκοπό να
αποθηκεύει δεδομένα
από τις ενέργειες του
χρήστη.
7. MNHNH ROM
Για παράδειγμα, και το cd rom
μας έχει ROM η οποία δίνει
εντολή όταν πατήσουμε το
κουμπάκι, να λειτουργήσουν
κάποια μέρη του (πχ το μοτοράκι)
για συγκεκριμένο χρονικό
διάστημα με συγκεκριμένη
ταχύτητα, ώστε να ανοίξει
επαρκώς το πορτάκι.
Ακόμα και το mp3 player έχει
μνήμη ROM!
Έτσι, η μνήμη αυτή, ανεξάρτητα
με το αν υπάρχει ρεύμα στο
κύκλωμα ή όχι, έχει
υποθηκευμένα τα δεδομένα για τη
λειτουργία της συσκευής, μέσα
της και δεν σβήνονται ποτέ.