Tech Library
List of Tech Library
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Book Introduction Part 4
Dynamics of Atmospheric Flight Author： Bernard Etkin Publisher: John Wiley & Sons Inc. This textbook derives the dynamics of aircraft and spacecraft, taking into account the effects of the earth’s rotation and orbit. It is intended for those who want to study the equations of motion of airplanes thoroughly. Especially, if you understand chapters 4 and 5, you can simulate the motion of various vehicles moving in three dimensions. There are some misprints in some parts, and it is rumored…
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Book Introduction Part 3
Flight Dynamics Author: Hiroshi Maeda Publisher: Yokendo The author, who was not an aeronautics specialist but now teaches aeronautical engineering, has designed this book for beginners to understand the motions of aircraft, satellites, and rockets with knowledge at the college level, without using many difficult mathematical formulas. The book is very easy to understand and is recommended for those who aim to become aerospace engineers. The Story of Wings Author: Hiroshi Maeda Publisher: Yokendo The author, who has taught in…
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Book Introduction Part 2
Test Pilot’s Testimony: Struggles and Lessons Learned in Postwar Domestic Aircraft Development Author: Eizo Hasegawa Publisher: Kantousha The author, who participated in the development of the YS-11, C-1, and FA-200 as a test pilot after World War II, describes the conditions of flight tests, etc. The book includes information such as the communication between the pilot and the designer during the development of the YS-11, which can be used as a reference in the development of new aircrafts throughout the…
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Introduction to Public Standards Search Site
This is an introduction to a site for searching and purchasing public standards related to drones, aircraft, etc. The MIL standards search site has an older version, but the standards themselves can be viewed. ASTM Standards: https://www.astm.org/ ASTM standards are developed and published by the American Society for Testing and Materials (ASTM International), a U.S. standards organization. There are standards for all industrial materials (iron and steel, nonferrous metals, rubber, plastics, coatings, textiles, etc.). SAE Standards: https://www.sae.org/standards SAE Standards are…
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UAS：ConOps Approach
About ConOps (Excerpt from NASA – ConOps Planning and Autonomy) ConOps refers to a very high-level, stakeholder-oriented graphical statement of the operational plan for a assumed system. It is particularly focused on how the system will be used to achieve end-user goals. ・Indicates the system’s operational limits, etc., and clarifies the requirements and functions for users. ・Detailed description of the mission overview and operational scenarios Figure shows an example of ConOps at NASA ConOps for UAS The ConOps required for…
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Certification Basis for Type Certification, etc.
Certification Basis The following two standards apply to Type Certification of UAS 1. Standards regarding strength, structure and performance to ensure safety of aircraft (Article 236-15 of Regulations for Enforcement Civil Aeronautics Act) 2. Standards established as necessary to ensure uniformity (Article 236-24 of Regulations for Enforcement Civil Aeronautics Ac) Inspection procedures for these standards are specified in Circular No. 8-001 “Inspection Procedures for Safety and Uniformity Standards for Type Certification, etc. of UAS”, which provides specific standards. However, special…
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Overall image of Type Certification activities
Type Certification Activities The following is an overall picture of Type Certification activities. Unmanned Aircraft Type Certification activities cover the type design and manufacturing process to certify that each type of unmanned aircraft complies with safety and uniformity standards.
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Type Certification: Safety Standards for Design
Safety Standards Standards for Strength, Structure and Performance to Ensure Safety (Article 236-15 of Regulation for Enforcement of the Civil Aeronautics Act)” are applied to the design of unmanned aircraft of Type Certification. With regard to these standards, the provisions of Part II of the Guidelines for Airworthiness Inspection (Circular No. 381, enacted on October 20, 1966) shall apply mutatis mutandis to unmanned aircraft that receive Class I certification and that fly in airspace that includes specified airspace. On the…
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UAS: Class 1 and Class 2 Certification
Class 1 and Class 2 The level of safety required of unmanned aircraft varies depending on the type of flight, and the following categories exist for Type Certification and Aircraft Certification. Class I Certification for an aircraft intended to conduct specified flights (“Category III flights”) without taking entry control measures. Class II Certification for aircraft intended to conduct specified flights (“Category II flights”) after taking entry control measures.
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UAS: Overview of Aircraft Certification and Type Certification
Aircraft Certification / Type Certification An overview of Aircraft Certification and Type Certification for UAS is as follows. Aircraft Certification: This covers each aircraft and serves as proof of the safety of each aircraft. Type certification: This covers each model and serves as proof that the safety of the design of each model and the manufacturing system capable of mass production have been established. Operational Image of Type Certification & Aircraft Certification
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UAS: Registered Inspection Organization System
Registered Inspection Organization There is a system (Registered Inspection Organization System) that allows private organizations registered by the government as well as the national government to conduct inspection work related to Aircraft Certification and Type Certification of unmanned aircraft. The registration is valid for a period of three years, and the government may order a registered inspection organization conformity order, business improvement or suspension order, or revoke its registration, as necessary. The registration of a registered inspection organization requires, among…
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UAS: System of documentation for Type Certification
Documents related to Type Certification The document system related to Type Certification of unmanned aircraft in Japan is as follows. Circular No. 8-001: Describe specific standards regarding “Safety Standards” and “Uniformity Standards” that are applicable standards. Circular No. 8-002: Describes the procedures for Type Certification, etc. Guidelines for obtaining type certification, etc. for unmanned aircraft: Contains a summary of examples of type certification and other certification activities in general.