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I don’t question the in-universe ability of characters to fly/levitate with no obvious means of propulsion; it’s fantasy, and accepting that they can do this is the price of admission. 1/

0 2
2021-03-07

NASA release:

NASA has awarded the Mars Ascent Propulsion System (MAPS) contract to Northrop Grumman to provide propulsion support and products for spaceflight missions - "one step closer to realizing Mars Sample Return (MSR)".

102 933
2021-03-05

G.I. Joe A Real American Hero! 1982 - JUMP (Jet Mobile Propulsion Unit)

0 3
2021-02-23

This is the SMX-25, DCNS's futuristic non-nuclear hybrid craft that can travel quickly on the surface like a frigate, then dive near the target to use Air-Independent Propulsion like the stealthiest submarines. <3000 tons, 10kts dive, 38kts surfaced.
https://t.co/YOyxl67lel

35 116
2021-02-16

The first artist impression of a new supersonic anti-ship for fighter has been released

This missile features a ducted ramjet propulsion with range of 500km. It is expected to undergo live fire testing in 2026.

by
https://t.co/Ctq7WOR30n

1 1
2021-02-15

And then there's those bonus stages.
They're a nice break from the shooting. This time you controls something much like the first sub-game of Batalyx (Hallucin-O-Bomblets) where your shots are also your propulsion. So you have to reach the end of the level, negotiating obstacles.

0 0
2021-02-04

ID all..(Ignoring forms of propulsion) Odd One Out? 😬

5 82
2021-01-25

Jellyfish summon the "virtual wall effect" to maximize their thrust. Researchers are studying how they do it, seeking ideas for bio-inspired underwater propulsion. https://t.co/NRJzoLdeXt

3 18
2021-01-15



AtchOum, propulsion de gouttelettes, d'imagination, je vous rassure.

Je suis une petite âme, ornée de chaussettes colorées (c'est important) fabriquant des moments immuables sous n'importe quelle forme d'art.
-> Instagram de qualité :

1 5
2021-01-13

DID YOU KNOW? The TIE / LN had one of the most precisely manufactured propulsion systems in the galaxy (the Ps-4 twin ion engines) with no moving parts, & was low-maintenance. It sported independent generators for the engine and the weapons.

5 36
2021-01-05

The Hayabusa 2 asteroid sample capsule is coasting toward Earth without propulsion, following separation from its parent spacecraft hours ago.

Landing in Australia is expected around 12:47pm EST (1747 GMT), or a few minutes later, depending on winds.

https://t.co/K5R6ckh4tC

46 151
2020-12-05

Je précise qu'un vaisseau (à propulsion) mixte était un vaisseau en bois et à voile doté d'une machine à vapeur. Ce type de navire apparut au milieu du XIXe siècle et disparut rapidement après l'arrivée des premiers cuirassés dans les années 1860.

2 7
2020-11-09

Spinosaurus had a tail designed for propulsion in water, a forward-leaning center of gravity good for swimming, and curved claws more suited to catching prey in water than to walking on land. Read more: https://t.co/6rY2gtRons

153 894
2020-10-07

"...propellantless propulsion"

0 6
2020-09-04

The last known variant of the Dom and the final model in that line, the unit features various improvements such as dust filters for the rear thermonuclear jet propulsion and a back mounted antenna for increased communication capabilities.

1 11
2020-08-21

Interesting designs for transport craft and LLO/LEO propellant depots using nuclear propulsion and lunar ISRU-derived propellants.
They get to the Moon in about 24 hours using ~8km/s of deltaV.

From the Glenn Research Centre:
https://t.co/N1bkhHLynH

25 72
2020-08-08

Radioisotope Electric Propulsion has been dismissed because of the terribly low (3-8 W/kg) power density of the energy source.

However, newer Stirling generator ASRGs manage 90 W/kg, making them finally interesting for 100kg-scale probes in deep space.
https://t.co/wqg0Jr9jOB

18 62
2020-08-07