Cars & Transportation: Aircraft: “Question: Is fuel cell energy the only source of energy that can replace jet engines on planes?” plus 5 more |
- Question: Is fuel cell energy the only source of energy that can replace jet engines on planes?
- Question: It's possible to install a billiard table on a private jet?
- Question: Pilots in the UK?
- Question: How come the Boeing 707 and the DC-8 had much longer ranges than the A321 and 737-900?
- Question: Big US Airforce cargo plane with 4 engines. Not C-5, not C-17. What is it?
- Question: What really creates thrust ?
| Question: Is fuel cell energy the only source of energy that can replace jet engines on planes? Posted: 23 Sep 2016 05:45 AM PDT Report AbuseAdditional DetailsIf you believe your intellectual property has been infringed and would like to file a complaint, please see our Copyright/IP Policy Report Abuse Cancel Report AbuseAdditional DetailsIf you believe your intellectual property has been infringed and would like to file a complaint, please see our Copyright/IP Policy Report Abuse Cancel Report AbuseAdditional DetailsIf you believe your intellectual property has been infringed and would like to file a complaint, please see our Copyright/IP Policy Report Abuse Cancel  |
| Question: It's possible to install a billiard table on a private jet? Posted: 23 Sep 2016 05:02 AM PDT Report AbuseAdditional DetailsIf you believe your intellectual property has been infringed and would like to file a complaint, please see our Copyright/IP Policy Report Abuse Cancel Report AbuseAdditional DetailsIf you believe your intellectual property has been infringed and would like to file a complaint, please see our Copyright/IP Policy Report Abuse Cancel Report AbuseAdditional DetailsIf you believe your intellectual property has been infringed and would like to file a complaint, please see our Copyright/IP Policy Report Abuse Cancel |
| Posted: 23 Sep 2016 04:46 AM PDT Report AbuseAdditional DetailsIf you believe your intellectual property has been infringed and would like to file a complaint, please see our Copyright/IP Policy Report Abuse Cancel Report AbuseAdditional DetailsIf you believe your intellectual property has been infringed and would like to file a complaint, please see our Copyright/IP Policy Report Abuse Cancel Report AbuseAdditional DetailsIf you believe your intellectual property has been infringed and would like to file a complaint, please see our Copyright/IP Policy Report Abuse Cancel |
| Question: How come the Boeing 707 and the DC-8 had much longer ranges than the A321 and 737-900? Posted: 23 Sep 2016 03:54 AM PDT The 707 and DC-8 and the A321 and 737-900 are about the similar body sizes and they are all narrow body planes. The 707 and DC-8 even had 4 engines with very bad fuel efficiency. The A321 and 737-900 are twin engine planes and are much more fuel efficient. But the 707 and the DC-8 can fly longer and further and were considered as long range intercontinental planes while the A321 and 737-900 fly domestic or short haul international flights only. |
| Question: Big US Airforce cargo plane with 4 engines. Not C-5, not C-17. What is it? Posted: 23 Sep 2016 12:24 AM PDT A description would be helpful. Did it have the wings on top of the fuselage or on the bottom? Did it have a T-tail or a more conventional? Was it a jet or a turboprop? Could have been an Il-76 or an An-124. Since the UN General Assembly is in session this week, Stewart and McGuire serve as the overflow airports to store the planes of the various dignitaries who come to attend the proceedings. (Generally, the poorer the country, the fancier the ride.) Some of these worthies have lots of luggage, especially on a return trip, which they carry on Il-76s which they charter for the purpose if their country's Air Force doesn't have have any. |
| Question: What really creates thrust ? Posted: 23 Sep 2016 12:15 AM PDT "Is it the velocity of the air or the pressure ?" Why not both? Thrust results in a net force on the propeller, right? You can look at that force or pressure on the propeller mechanistically, i.e., from a Navier-Stokes perspective, or from a more general Newton's 2nd law perspective, F = d(p)/dt. Here p is the symbol for momentum, and it's the way that Newton originally wrote his 2nd law formula. The propeller changes the momentum (velocity of a certain mass) of air with respect to time, thus creating a reaction force on the prop. One note here -- these are two different ways of looking at the same thing. High pressure zones behind the prop blade and reaction force from increasing the velocity of air are two aspects of the same thing. These are not additive effects on thrust, but they are just two different ways of looking at the same problem. |
| You are subscribed to email updates from Cars & Transportation: Aircraft. To stop receiving these emails, you may unsubscribe now. | Email delivery powered by Google |
| Google Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States | |
0 comments:
Post a Comment