space air overpressure
31Lifeboat (shipboard) — A lifeboat is a small craft carried on a ship to provide a means of emergency evacuation in the event of a disaster aboard the ship. Lifeboats may be rigid or inflatable vessels; the inflatable type are sometimes referred to as liferafts . In the …
32Shock wave — Bombshock redirects here. For the Transformers character, see Micromasters#Bombshock. For other uses, see shockwave. Schlieren photograph of an attached shock on a sharp nosed supersonic body. A shock wave (also called shock front or simply shock …
33T-54/55 — Infobox Weapon name= T 54/55 caption= Polish T 55A, Poznań Citadel Museum of Arms () origin= Soviet Union type= Main battle tank is vehicle= yes is UK= yes service= 1947–present used by= wars= designer= Morozov (T 54), OKB 520 (T 54A and later)… …
34Cold-weather biking — A bicycle set up for winter commuting with metal studded tires, enclosed chain case, and drum brakes Cold weather biking (also referred to as winter biking, snowbiking or icebiking) is the activity of cycling in winter weather with snow, ice, and …
35Martian geyser — Artist concept showing sand laden jets erupting from Martian geysers. (Published by NASA; artist: Ron Miller.) …
36Hand grenade — M67 fragmentation grenade, a widely used modern hand grenade. A hand grenade is any small bomb that can be thrown by hand. Hand grenades are classified into three categories, explosive grenades, chemical and gas grenades.[1] Explosive grenades… …
37Collective protection — is used for group protection of personnel in a nuclear, biological or chemical event, (NBC). Collective protection is an important aspect of fixed site defense. Ideally, it provides a contaminate free environment for people, allowing relief from… …
38Zeppelin — A Zeppelin is a type of rigid airship pioneered by the German Count Ferdinand von Zeppelin in the early 20th century, based on designs he had outlined in 1874, [Eckener 1938. pages 155 157] designs he had detailed in 1893, and that were reviewed… …
39De Havilland Comet — Infobox Aircraft name= DH.106 Comet type= Airliner manufacturer= de Havilland caption= A Royal Air Force Comet C.2 in flight. first flight= 27 July 1949 introduced= 2 May 1952 with BOAC retired= status=In military service only primary user= BOAC… …
40Terminal ballistics — Terminal ballistics, a sub field of ballistics, is the study of the behavior of a projectile when it hits its target. It is often referred to as stopping power when dealing with human or other living targets. Terminal ballistics is as relevant… …
