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RX200TJ Flight Test 2 (Pierce Cloud To Reach The Sun)
In Pandanwangi 5 November 2016, LAPAN Pustekroket managed to make a new record. As part of a major program of research and development guided missile, Pustekroket must undergo one important phase in the cycle is validation.
The main mission this time is to make sure the launch control system Auto-Take Off and Autopilot based Waypoint that has been applied before is still running well face more extreme conditions so that the limits of the flight envelope of the test vehicle could be mapped. In the previous release (Pandanwangi, August 2016) optimal gain values are suitable for use in systems otopilot secured. Each system otopilot when confronted fly different vehicle configurations, the gain is pretty value must also be changed.
The rides were tested two types, although it has a similar shape and the same baseline that RKX-200TJ (Full Experimental Rocket diameter of 200 mm thrust turbojet-powered), but has a different engine placement locations. RKX-white 200TJ (Siputih) putting a jet engine in the middle of the vehicle, while the orange variant (SiOrenj) using the back as the location of the jet placement. It should be noted that the design and workmanship LAPAN rides are 100% made in Indonesia.
Each configuration has advantages and disadvantages of each. Siputih variant has the advantage in longitudinal stability, while SiOrenj variant has the advantage in fuel capacity.
Important aspects validated in experiments this time there are two aspects that have implications for the stability of longitudinal pitching behavior (nod) and aspects of the capacity of the fuel that has direct influence on fly cruising distance rides.
In Siputih variants, experiments were performed using a full approach autopilot (assisted takeoff by rocket, loitering and terminating). With an average cruising speed of 180 km per hour, RKX 200TJ Siputih, survived to fly for 13 minutes or mean horizontal distance of approximately 39 kilometers! Far exceeding its design targets that require a distance of 20 kilometers as the maximum distance. In this experiment, the test vehicle is also capable of flying through an altitude stratocumulus clouds where cumulus clouds are clearly visible far below the onboard camera. And that seemed just the beauty of the sky where the sun is on it (15:41) and the summit of Mount Semeru underneath (16:30).
If the height of the peak of Mount Semeru is 3,676 meters, this means that the vehicle is able to fly exceeds that height, then a record has been printed, with RKX-200TJ Siputih LAPAN Pustekroket successfully "Penetrating Cloud for Reaching the Sun".
Distinctive features of the program RKX TJ-200 is located on the use of rockets as the initial driving force or a catapult. The consequence is that the calculation of static stability both longitudinal dimension or lateral dimension / directional must be accurate within a matter of millimeters. While the Orange variant, the jet engine shifted to the back, really present new challenges for researchers in arranging longitudinal stability. The center of gravity is moving backward forcing researchers to explore and try different positions ballast / ballast to shift the CG to return to the front / stable area without changing the characteristics of the moment of inertia. After going through several simulations and experiments, finally on Pandanwangi test launches at this time found the optimum position of the ballast to be used in subsequent development phases. This vehicle has the potential as a monitoring tool weather (weather deploy fast surveyor), monitoring sea traffic, and interceptor vessel (quick response interdictor ship).
Hopefully with the achievements of this Pustekroket Space agency, could be contributing to the world of aviation and keantariksaan Indonesia to be more passionate and accelerate to master space rocket technology.
Acting as a Flight Director in the experiment this time is Dr. (cand.) Larasmoyo M.Des Nugroho, Head of Program Control Rocket Dr. (cand.) Herma Yudhi Irwanto, Chief Engineering Rocket Oka control Sudiana MT., Aircraft Manager Kurdianto MT., autopilot Engineer (Salman Yusuf ST), Quality Control Gilar Budi Rahardja MT., Stability and Weight Shandi Priyo Laksono ST., ST Nugroho Wimbo electronical System and Electrical System Khaula ST. Documentation by Riki Ramdani ST. Aerostruktur by Ibadi ST. Aerial Drone Camera Bowo.
http://pustekroket.lapan.go.id/inde...Menembus-Awan-Untuk-Menggapai-Matahari/berita