• The Korean Journal of Air & Space Law and Policy
• /
• v.19 no.2
• /
• pp.179-197
• /
• 2004

As we observed in Irag war, air force power is integral to military operations owing to its promptness and accuracy. In this regard, strong air force power has a deterrent effect on a war. Meanwhile, as aviation industry is a key-future industry, the importance of the industry in our economy is significantly growing. Therefore, to maximize a national interest in utilizing limited aviation resources, it is necessary to establish a new system in which civil aviation and military aviation system is closely related and consolidated. Thus, our task is to find a way to enhance civil aviation industry to the extent of guaranteeing effective military operations. At the same time, civil aviation resources shall be effectively utilized for the military purposes in the event of a war. Ibis task should be carried out in a way to further efficiency for both civil and military aviation system, rather than resulting in conflicts between two syste

• Aerospace Engineering and Technology
• /
• v.11 no.1
• /
• pp.98-102
• /
• 2012

These days, Uncooled IR Systems are more popular in the area of defense and aerospace than before. Uncooled IR Systems are widely used as core technology for making unmanned systems and detecting enemy objects during the day and night in the distance. Recently, researches on TEC-less IRFPA have been increased to minimize the power consumption and to make a smaller system than before. For this, it needs to find adequate NUC(Non-Uniformity Correction) coefficients as FPA(Focal Plane Array) temperature changes. In this paper, we propose a new NUC coefficient estimating technique, DCCE-LI(Dynamic Calibration Coefficients Estimation with Linear Interpolation), for TEC-less IRFPA. It is based on a linear interpolation method and it can estimate NUC coefficients in real-time. So, by testing and evaluating it with some IR images, we conclude that the quality of IR images using proposed method is better than applying static coefficients.

• Defense and Technology
• /
• no.11 s.129
• /
• pp.52-59
• /
• 1989

BAe사는 영국유수의 수출품제작회사로서 세계에서 손꼽히는 대규모 방산업체 가운데 하나이다. 이 회사는 군용 및 민간용 항공기, 유도무기, 방어용 장비, 우주시스템등 어느나라 보다도 더 많은 종류의 제품을 설계 및 제작하고 있다. 또한 자동차, 병기, 건설 및 전자산업에도 진출하여 세계 1백50개국에 고객을 확보하고 있고, 총 작업인원이 13만명을 상회하고 있다. 이 회사는 최근 고객에 대한 요구를 충족시키기 위해 전문성을 갖도록 독립적으로 회사를 재구성하였다. 방산분야를 볼 때 새로 통합된 조직은 영국 우주항공방산회사로서 3개회사(군용기회사, 동력학회사, 로얄병기회사 등)를 통해 광범위하고 복잡한 군사자원들을 결합시키고 있다

• Defense and Technology
• /
• no.7 s.245
• /
• pp.48-61
• /
• 1999

높은 비강도, 높은 사용 온도, 내식성, 내산화성, 비자성, 생산성 등이 동시에 구비된 타이타늄 합금은 지상, 해상 및 수중, 우주 항공 장비 등의 군사적으로 중요한 요구 사항을 만족시킬 수 있는 재료로 향후 무기체계 고기능화 및 고성능화에 부응할 수 있는 전략적으로 가장 중요한 재료에 속한다

• Defense and Technology
• /
• no.10 s.176
• /
• pp.50-59
• /
• 1993

조선기술은 최근 첨단기술로 일컬어지는 컴퓨터기술, 정보통신 및 항공우주공학의 눈부신 발달에 힘입어 선박 설계기술의 향상은 물론 생산의 자동화, 운항 자동화를 통한 고신뢰도의 선박 출현을 눈 앞에 두고 있습니다 이러한 조선 기술의 발달은 군함의 고속화와 고성능화를 촉진시키게 되었으며, 특히 군함에서 필수적인 은밀성, 정숙성 까지도 크게 향상시켰고, 이와 함께 군함의 각종 무기 체계, 지휘 및 정보시스템의 정밀화를 가능케 하였습니다

• Defense and Technology
• /
• no.10 s.128
• /
• pp.62-69
• /
• 1989

Avibras사는 세계적인 기업으로 지속적인 성장을 하고 있는 가장 큰 브라질회사의 하나로서, 연구 및 사업개발과 고도의 기술제품 및 장비를 생산하는 민간 기술회사이다. 이 회사는 순수 브라질 회사로서 1961년이후 방위산업, 화학, 전자통신분야에서 그의 전문성을 발휘하면서 국가적인 항공우주산업을 선도해 왔다

• Journal of Aerospace System Engineering
• /
• v.11 no.2
• /
• pp.1-8
• /
• 2017

Delivering clear requirements of the military in the defense acquisition process is a key activity for successful weapon acquisition. In the field of defense, Operational Requirements Documents (ORDs) are prepared to derive and deliver the requirements of the military. In this study, we compare and analyze the form and content of the recent domestic ORD with reference to the US Department of Defense (DoD) ORD. As a result of the study, it is found that the domestic ORD form needs to be supplemented with in accordance with the purpose of the operation, while the requirement parameter, which is a core item of ORD, is insufficient. In order to address these issues, detailed contents of the ORD form suitable for the purpose of this study are presented. Also, we provide clear definitions, explanations, and examples of the operational system's key performance parameters and suggest ways to clearly communicate the requirements of the military.

• Journal of Aerospace System Engineering
• /
• v.13 no.5
• /
• pp.16-23
• /
• 2019

This paper describes the design and analysis of a periscope imaging system installed at the engine test facility in the Agency for Defense Development. The periscope system is a cylinder-shaped image observation system installed at the rear of the engine and at the top of the diffuser. The periscope system has high risk of breaking because it is directly affected by high temperature (2300 K) and products of combustion. Thus, we used 1D heat transfer calculation, and 2D and 3D CFD analysis to confirm the heat flux and temperature distribution. Also, the cooling performance was verified. In the current design, using the periscope system, we can see flame shapes, control of the nozzle, and stability of the exhaust flow visually.

• Journal of Aerospace System Engineering
• /
• v.13 no.4
• /
• pp.60-65
• /
• 2019

This study did a structural design of a fuel system of auxiliary fuel tank applied to aircraft then analyzed it. The safety of the structural design result was investigated. Aluminum alloy metal structure was applied to the fuel system structure. The structural analysis was conducted using commercial finite element software. The design requirement was maximum accelerate condition of the structure. Therefore, structural design was done considering the maximum accelerate condition.

• Journal of Aerospace System Engineering
• /
• v.16 no.4
• /
• pp.95-108
• /
• 2022

Airworthiness certification is critical, in ensuring the flight safety of military aircraft for development tests and production operations. The MIL-HDBK-516C, latest airworthiness certification document, handles the field of flying qualities in Chapter 6 (flight technology), and refers to specific chapters of MIL-STD-1797B, which is the specification document for developing military aircraft. Since the MIL-STD-1797B released in 2006 by the U.S. Department of Defense is not disclosed to other countries, the Chapter 6 (flight technology) of MIL-HDBK-516B Expanded, the former certification standards pursuant to flying qualities, has to be applied to military aircraft being developed in the Republic of Korea. However the requirements of Chapter 6 of MIL-HDBK-516B Expanded comprise unclear sentences, because of contents from various development specifications. Also, clarification is needed in that the same requirements have to be verified in different criteria. In this paper, the results of this study present an effective verification method, for acquiring the airworthiness certification in field of flying qualities based on MIL-HDBK-516B Expanded.