Tech Library
List of Tech Library
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Book Introduction Part 8
NASA CR-3144 A Compilation and Analysis of Helicopter Handling Qualities Data Author：Heffly, R.K. , Jewell, W. F. Publisher： NASA This paper is a compilation of various helicopters (liner model) for rating handling qualities. A block diagram of the flight control law for each aircraft is also presented, although it is a simplified version. The aircraft included are OH-6A, BO-105C, AH-1G, UH-1H, and CH-53D. There are also data on the amount of steering and weight and center of gravity tolerances required…
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Book Introduction Part 7
NASA CR-2144 AIRCRAFT HANDLING QUALITIES DATA Author: Heffly, R.K. , Jewell, W. F. Publisher: NASA This book is a paper that collects airframe motion models (but linear models) of various airframes for maneuverability evaluation. A block diagram of the flight control law for each aircraft is also presented, although in a simplified version. The aircraft included are NT-33A, F-104A, F-4C, X-15, HL-10, Jetstar, CV-880M, B-747, C-5A, and XB-70A. It is worth reading for those who want to fly these aircraft…
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Book Introduction Part 6
AIRPLANE DESIGN Vol.1～8 Author: Jan Roskam Publisher: DAR CORPORATION This book summarizes airplane design methods in an easy-to-understand manner using drawings, tables, etc. of past airplane developments, from the initial design (aircraft sizing) in Volume 1 to the development, mass production, and maintenance cost evaluation in Volume 8. It covers both military and civilian aircraft, and is recommended for those who want to study the outlines of aircraft design. Volume 8 is particularly valuable because it contains a volume’s worth…
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About Approved Organizations
What is Approved Organizations? Approved Organizations are defined in Article 20 of the Civil Aeronautics Act as a organization that can conduct part or all of the government’s inspections on behalf of the government regarding the design, manufacturing process, and current status of the airworthiness of aircraft and equipment. In order for an organization to be approved, it must be certified by the Minister of Land, Infrastructure, Transport and Tourism that its capabilities in one or two or more of the…
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PIO: Pilot Induced Oscillation
About PIO(Pilot Induced Oscillation) A vibration phenomenon that is unintentionally excited by the correlation between the aircraft’s control system and the pilot. This phenomenon has been observed in the Wright Flyer, the first aircraft, and in the latest fighter aircraft (X-36), and in the worst case, it can lead to a crash. Although the name gives the impression that the cause is the pilot, the cause is the aircraft (Flight Control System). PIO is classified into the following four types…
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Unmanned Aircraft: Reporting Obligations for Holders of Type Certification, etc.
Article 132-21 of the Civil Aeronautics Act stipulates that “Any person who has approved Type Certification etc. must, regarding with an unmanned aircraft of the type for which Type Certification etc. have been approved, collect information on situations specified by Ordinances of the Ministry of Land, Infrastructure, Transport and Tourism as those in which aircraft accidents, etc. (limited to those involving unmanned aircraft) and other unmanned aircraft do not comply with safety standards or are likely to fail to comply…
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Unmanned Aircraft: Inspection of Manufacturing Processes in Type Certification
Inspects that each process is set up appropriately to realize the design (1) Inspection of processes ●Inspection of documents Confirm that the requirements of design data, etc., are appropriately reflected in the documents that define the process. ●Inspection of actual products Confirmation that the manufactured product conforms to the design data. ●Witness inspection of the work process If the appropriateness of the contents cannot be confirmed only by inspecting the documents, the actual work process is witnessed and confirmed. (2)…
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Unmanned Aircraft: Flight Configurations and Flight Requirements for Each Category
The following is a list of flight types for each category of unmanned aircraft and the requirements for each flight, assuming aircraft certification. Category II flights may be flown without aircraft certification and/or pilot license by obtaining a flight permit/approval.
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Book Introduction Part 5
Follow me! Use “Artisan Tools” to Squash Design Troubles! -How to use FMEA, FTA and Design Review wisely! Author: Yoshimasa Kunii Publisher: Nikkan Kogyo Shinbunsha The book explains the methods of FMEA/FTA and design review, which are quality control methods, in an easy-to-understand manner. It explains why FMEA/FTA and design review are not so effective despite the fact that they are thoroughly implemented as a means to strengthen quality control. The book also provides simple examples of FMEA/FTA implementation. Standards…
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UAS: Application Documents for Type Certification
UAS: Documents to be attached to the application for Type Certification The applicant for Type Certification must submit the application for Type Certification and its supporting documents by the specified time. For unmanned aircraft that are currently manufactured at the time of application, the time for submission of all attached documents is at the time of application, regardless of the submission time listed below. The following two items are included in the “Documents with Reference Matters”. ・The plan of management…
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UAS: Pre-coordination in Type Certification
UAS Type Certification Activity: Pre-coordination It is positioned as a preparation for smooth implementation of certification activities. Pre-coordination is a voluntary procedure, but it is advisable to conduct it in order to implement certification activities smoothly. Pre-coordination in Class 1 Type Certification is mainly intended to agree on general practical matters and coordinate the design concept of the aircraft, various standards to be used, an outline of the specifications of the unmanned aircraft, and the policy for proving conformity to…
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Unmanned Aircraft: Type Certification Process
Overview of the Type Certification Process in Japan The Type Certification process for unmanned aircraft is described in Circular No. 8-002 “Procedures for Type Certification of Unmanned Aircraft” issued by JCAB. Basically, the Type Certification activities for unmanned aircraft must be conducted in accordance with this process. The following is an overview of the Type Certification process. Please refer to Circular No. 8-002 for details on each step.