Mengenal Lembaga Riset Terbesar di Dunia VI

Badan Penelitian dan Pengembangan Pertanian


 

Sejak didirikan pada tahun 1974, Badan Litbang Pertanian telah mengalami banyak perubahan, baik dari sisi organisasi maupun kepemimpinan. Penambahan maupun pengurangan Unit Kerja (UK) maupun Unit Pelaksana Teknis (UPT) beberapa kali dilakukan. Pimpinan Badan Litbang Pertanian datang dan pergi silih berganti, begitu pula program dan kebijakan strategisnya sebagai tuntutan dari dinamika lingkungan strategis sektor pertanian. 

71	Information and Library Network Centre		496	78	56	80
72	Lunar and Planetary Institute		492	73	55	108
73	Commissariat a l'Ënergie Atomique		220	63	48	338
74	Institut National de l'Environnement Industriel et des Risques		418	39	31	903
75	European Bioinformatics Institute EMBL		37	45	142	1029
76	National Radio Astronomy Observatory		172	86	59	214
77	Instituto de Salud Carlos III		186	265	151	11
78	Transportation Research Board		151	365	240	6
79	National Central Library		86	61	46	883
80	Los Alamos National Laboratory		132	115	86	148
81	US National Science Foundation		148	41	87	847
82	International Research Center for Japanese Studies		361	48	38	691
83	(1) Indonesian Agency for Agricultural Research and Development		250	141	91	68
84	Joint Institute for Nuclear Research		109	184	110	69
85	National Research Council Canada		36	149	548	58

Indonesia Bisa!

Amin.

Ucapan Terima Kasih:

Bpk. Dr. Miftahul Hadi, M.Sc.
[Peneliti Fisika di LIPI dan Founder Institute for Theoretical Physics and Mathematics]

Bpk. Dr. Teddy Lesmana, S.E., M.M.

[Peneliti Ekonomi di LIPI]

Bersambung.

Semoga Bermanfaat

Defense Space Security

Prototipe Helikopter Masa Depan Buatan seseorang warga Indonesia bernama Ridwan Chandra Choa yang pernah bekerja sebagai seniman digital Lucasfilm Animation di Singapura.

Hypersonic Speed: The Warp Speed of Today 

In aerodynamics, a hypersonic speed is one that is highly supersonic (even though the origin of the words is the same: "super" is just the Latin version of the Greek "hyper"). Since the 1970s, the term has generally been assumed to refer to speeds of Mach 5 and above.

The precise Mach number at which a craft can be said to be flying at hypersonic speed varies, since individual physical changes in the airflow (like molecular dissociation and ionization) occur at different speeds; these effects collectively become important around Mach 5. The hypersonic regime is often alternatively defined as speeds where ramjets do not produce net thrust.


Experience Boeing 

While the definition of hypersonic flow can be quite vague and is generally debatable (especially due to the lack of discontinuity between supersonic and hypersonic flows), a hypersonic flow may be characterized by certain physical phenomena that can no longer be analytically discounted as in supersonic flow. The peculiarity in hypersonic flows are as follows:

1. Shock layer
2. Aerodynamic heating
3. Entropy layer
4. Real gas effects
5. Low density effects
6. Independence of aerodynamic coefficients with Mach number.

The X-43 is an unmanned experimental hypersonic aircraft with multiple planned scale variations meant to test various aspects of hypersonic flight. It was part of NASA's Hyper-X program and has set several airspeed records for jet-propelled aircraft. The X-43 is the fastest aircraft on record at approx. 7000 miles per hour (10,461 km/h).

A winged booster rocket with the X-43 placed on top, called a "stack", is drop launched from a larger carrier plane. After the booster rocket (a modified first stage of the Pegasus rocket) brings the stack to the target speed and altitude, it is discarded, and the X-43 flies free using its own engine, a scramjet.

Sources:

1. Wikipedia

2. Boeing Corporation

3. NASA