Title:
GROUNDING DETECTING DEVICE FOR SKID TYPE AIRPLANE
Document Type and Number:
Japanese Patent JP2733046
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To easily detect whether the skid of a skid type airplane is grounded on the ground or not.
SOLUTION: A vibration transmitting circuit 8 is provided on a first connecting member 6 of a skid 4, and a vibration detecting circuit 9 is provided on a second connecting member 7. The vibration transmitting circuit 8 oscillates vibrations in the ultrasonic band to vibrate the skid 4. The vibration detecting circuit 9 detects the vibrations propagated on the skid 4, and the detection level is inputted to a judging circuit 11 via an amplifying circuit 10. When the skid 4 is grounded, the vibration energy is lost to the outside, and reception level is reduced. The judging circuit 11 judges that the skid 4 is floated when the reception level reaches the reference level, and it judges that the skid 4 is grounded when the reception level does not reach the reference level.
Inventors:
KURATANI NAOHIKO
Application Number:
JP6145396A
Publication Date:
March 30, 1998
Filing Date:
March 18, 1996
Export Citation:
Assignee:
KOMYUUTA HERIKOPUTA SENSHIN GIJUTSU KENKYUSHO KK
International Classes:
G01H17/00; B64C25/06; B64D45/00; (IPC1-7): B64D45/00; B64C25/06
Domestic Patent References:
| JP7125699A |
Attorney, Agent or Firm:
Keiichiro Nishikyo (2 outside)