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user14897
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Discounting the V-22 OpsreyOsprey and the other tiltrotors, the drawbacks are:

  • Wasted cabin space
  • L-duct inlet(s) needed to guide the air in
  • With that potential problems with getting the air in as the air prefers fewer turns
  • A reduction gearbox is still needed
  • Gearbox still needed for the tail rotor
  • Harder maintenance access as it will be buried into the fuselage
  • If the exhaust is channeled downwards: potential tarmac melting, fuselage weakening, and handling issues in low hover
  • If channeled upwards, well, that's where the rotor iswhere the rotor is
  • Otherwise, extra heat ducting needed, i.e., added complexity and weight and expensive materials
  • Any fire or uncontained failure will cause grave danger.

Below is the best illustration I could find, and it gives you an idea about the previous points:

enter image description here http://www.melm-md.com/images/N600_image_02.jpg

Discounting the V-22 Opsrey and the other tiltrotors, the drawbacks are:

  • Wasted cabin space
  • L-duct inlet(s) needed to guide the air in
  • With that potential problems with getting the air in as the air prefers fewer turns
  • A reduction gearbox is still needed
  • Gearbox still needed for the tail rotor
  • Harder maintenance access as it will be buried into the fuselage
  • If the exhaust is channeled downwards: potential tarmac melting, fuselage weakening, and handling issues in low hover
  • If channeled upwards, well, that's where the rotor is
  • Otherwise, extra heat ducting needed, i.e., added complexity and weight and expensive materials
  • Any fire or uncontained failure will cause grave danger.

Below is the best illustration I could find, and it gives you an idea about the previous points:

enter image description here http://www.melm-md.com/images/N600_image_02.jpg

Discounting the V-22 Osprey and the other tiltrotors, the drawbacks are:

  • Wasted cabin space
  • L-duct inlet(s) needed to guide the air in
  • With that potential problems with getting the air in as the air prefers fewer turns
  • A reduction gearbox is still needed
  • Gearbox still needed for the tail rotor
  • Harder maintenance access as it will be buried into the fuselage
  • If the exhaust is channeled downwards: potential tarmac melting, fuselage weakening, and handling issues in low hover
  • If channeled upwards, well, that's where the rotor is
  • Otherwise, extra heat ducting needed, i.e., added complexity and weight and expensive materials
  • Any fire or uncontained failure will cause grave danger.

Below is the best illustration I could find, and it gives you an idea about the previous points:

enter image description here http://www.melm-md.com/images/N600_image_02.jpg

added 28 characters in body
Source Link
user14897
user14897

DrawbacksDiscounting the V-22 Opsrey and the other tiltrotors, the drawbacks are:

  • Wasted cabin space
  • L-duct inlet(s) needed to guide the air in
  • With that potential problems with getting the air in as the air prefers fewer turns
  • A reduction gearbox is still needed
  • Gearbox still needed for the tail rotor
  • Harder maintenance access as it will be buried into the fuselage
  • If the exhaust is channeled downwards,: potential tarmac melting and, fuselage weakening, and handling issues in low hover
  • If channeled upwards, well, that's where the rotor is 😉
  • Otherwise, extra heat ducting needed, i.e., added complexity and weight and expensive materials
  • Any fire or uncontained failure will cause grave danger.

Below is the best illustration I could find (discounting the V-22 Opsrey and the other tiltrotors), and it gives you an idea about the previous points:

enter image description here http://www.melm-md.com/images/N600_image_02.jpg

Drawbacks:

  • Wasted cabin space
  • L-duct inlet needed to guide the air in
  • With that potential problems with getting the air in
  • A reduction gearbox is still needed
  • Gearbox still needed for the tail rotor
  • Harder maintenance access as it will be buried into the fuselage
  • If the exhaust is channeled downwards, potential tarmac melting and fuselage weakening and handling issues in low hover
  • If channeled upwards, well, that's where the rotor is 😉
  • Otherwise, extra heat ducting needed, i.e., added complexity and weight and expensive materials
  • Any fire or uncontained failure will cause grave danger.

Below is the best illustration I could find (discounting the V-22 Opsrey and the other tiltrotors), and it gives you an idea about the previous points:

enter image description here http://www.melm-md.com/images/N600_image_02.jpg

Discounting the V-22 Opsrey and the other tiltrotors, the drawbacks are:

  • Wasted cabin space
  • L-duct inlet(s) needed to guide the air in
  • With that potential problems with getting the air in as the air prefers fewer turns
  • A reduction gearbox is still needed
  • Gearbox still needed for the tail rotor
  • Harder maintenance access as it will be buried into the fuselage
  • If the exhaust is channeled downwards: potential tarmac melting, fuselage weakening, and handling issues in low hover
  • If channeled upwards, well, that's where the rotor is
  • Otherwise, extra heat ducting needed, i.e., added complexity and weight and expensive materials
  • Any fire or uncontained failure will cause grave danger.

Below is the best illustration I could find, and it gives you an idea about the previous points:

enter image description here http://www.melm-md.com/images/N600_image_02.jpg

deleted 106 characters in body
Source Link
user14897
user14897

Drawbacks:

  • Wasted cabin space
  • SL-duct inlet needed to guide the air in
  • With that potential problems with getting the air in
  • A reduction gearbox is still needed
  • Gearbox still needed for the tail rotor
  • Harder maintenance access as it will be buried into the fuselage
  • If the exhaust is channeled downwards, potential tarmac melting and fuselage weakening and handling issues in low hover
  • If channeled upwards, well, that's where the rotor is 😉
  • Otherwise, extra heat ducting needed, i.e., added complexity and weight and expensive materials
  • Any fire or uncontained failure will cause grave danger.

Below is the closestbest illustration I could find (discounting the V-22 Opsrey and the other tiltrotors), and it gives you an idea about the previous points:

enter image description here
enter image description here http://www.lsxmag.com/news/ls7-and-a-helicopter-look-no-further/

Not really vertical, gearbox still needed, and it's a piston engine.http://www.melm-md.com/images/N600_image_02.jpg

Drawbacks:

  • Wasted cabin space
  • S-duct inlet needed to guide the air in
  • With that potential problems with getting the air in
  • A reduction gearbox is still needed
  • Gearbox still needed for the tail rotor
  • Harder maintenance access as it will be buried into the fuselage
  • If the exhaust is channeled downwards, potential tarmac melting and fuselage weakening and handling issues in low hover
  • If channeled upwards, well, that's where the rotor is 😉
  • Otherwise, extra heat ducting needed, i.e., added complexity and weight and expensive materials
  • Any fire or uncontained failure will cause grave danger.

Below is the closest I could find (discounting the V-22 Opsrey and the other tiltrotors):

enter image description here
http://www.lsxmag.com/news/ls7-and-a-helicopter-look-no-further/

Not really vertical, gearbox still needed, and it's a piston engine.

Drawbacks:

  • Wasted cabin space
  • L-duct inlet needed to guide the air in
  • With that potential problems with getting the air in
  • A reduction gearbox is still needed
  • Gearbox still needed for the tail rotor
  • Harder maintenance access as it will be buried into the fuselage
  • If the exhaust is channeled downwards, potential tarmac melting and fuselage weakening and handling issues in low hover
  • If channeled upwards, well, that's where the rotor is 😉
  • Otherwise, extra heat ducting needed, i.e., added complexity and weight and expensive materials
  • Any fire or uncontained failure will cause grave danger.

Below is the best illustration I could find (discounting the V-22 Opsrey and the other tiltrotors), and it gives you an idea about the previous points:

enter image description here http://www.melm-md.com/images/N600_image_02.jpg

added 44 characters in body
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user14897
user14897
added 44 characters in body
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user14897
user14897
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user14897
user14897