What is the relationship between the maximum flying height and performance of today's unmanned aerial vehicles and the terrain?

Unmanned aerial vehicle is a term used by many countries to describe the latest generation of unmanned aerial vehicles. Literally, this term can describe cruise missiles developed from kites and radio-controlled aircraft to V-/KLOC-0 missiles, but in military terms, it is limited to reusable aircraft heavier than air.

Uav has a wide range of uses, low cost and good cost-effectiveness ratio; No risk of casualties; Strong viability, good mobility and convenient use. It plays an extremely important role in modern wars and has a broader prospect in the civil field.

Unmanned aerial vehicles are divided into reconnaissance aircraft and target aircraft.

Reconnaissance plane is used to complete battlefield reconnaissance and monitoring, positioning and shooting correction, damage assessment, electronic warfare, etc.

It can also be used for civil use, such as border patrol, nuclear radiation detection, aerial photography, aerial exploration, disaster monitoring, traffic patrol, public security monitoring and so on.

Drones can be used as targets for artillery and missiles.

The earliest development of drones in history was after World War I, and unmanned drones were used to train anti-aircraft gunners during World War II. After the Second World War, converting more or retired aircraft into special research or target aircraft has become a precedent for the use trend of modern drones. With the development of electronic technology, UAV has begun to show its flexibility and importance in reconnaissance tasks. For example, in the Vietnam War, the United States used a large number of drones to detect high-value or well-defended targets, which could reduce the risk of casualties or capture.

In 1982, Israel Aviation Industry Corporation (IAI) launched a military mission with drones as other roles. During the peace operation in Galilee (Lebanon War), the "Scout" UAV system played an important role in the service of the Israeli Army and the Israeli Air Force. The IDF mainly uses drones for reconnaissance, intelligence gathering, tracking and communication. In the desert storm campaign of 199 1, the U.S. military once launched a small unmanned aerial vehicle (UAV) specially designed to deceive the radar system as bait, and this bait has also become the object of emulation by other countries.

But before the end of the 20th century, they were just smaller than full-size remote-controlled aircraft. The U.S. military is increasingly interested in such aircraft because they provide low-cost and highly flexible combat machines that can be used without the risk of crew death. The first generation was mainly reconnaissance planes, but now some UAVs have been equipped with weapons (such as RQ- 1 Predator equipped with AGM- 1 14 Hellfire air-to-surface missiles). The military's expectation for drones to play more roles was originally bombing and ground attack. Now air-to-air combat is the last battlefield for pilots. Unmanned aerial vehicles equipped with weapons are called unmanned combat aircraft (UCAV).

The U.S. military purchased and manufactured the Pioneer UAV as a reliable system in the Second and Third Gulf Wars.

Unmanned aerial vehicle in service

China model:

Sky-1 UAV

Sky -2 UAV

No reconnaissance of five drones

No reconnaissance of nine drones

ASN-206 UAV

French model:

sparrow

German models:

Chlorine -289

Aladdin

Luna 2000

Indian model:

Nasa Nissan (remote control aircraft)

Hindustan Aviation Industry Co.

Searcher MkII (in cooperation with Israel)

Heron of Hindustan Aviation Industries (in cooperation with Israel)

Israel model:

Pioneer of Israel Aviation Industry Corporation (in cooperation with the United States)

Hunter RQ-5 UAV (in cooperation with the United States)

Israel aviation industry company Habib

Heron of Israel Aviation Industry Corporation

Israel Aviation Industry Corporation Wanderers

Israel aviation industry company scout

Israel aviation industry company searcher

Micro UAV system launched by Israel Aviation Industry Corporation

Jordan mode:

Jordan falcon

Type I wing

Jordan arrow

Static eye

Pakistan model:

title

South African model:

Kentron company searcher

Advanced technology and engineering company vulture

Daniel company short-tailed eagle

British model:

Mercato

Phoenix/secular bird

Night watchman

American model:

RQ- 1 predator /RQ- 1 sailor

RQ-2 Pioneer (in cooperation with Israel Aviation Industry Corporation)

RQ-3 dark star

RQ-4 RQ-4 Global Hawk/European Hawk

RQ-5 Hunter (in cooperation with Israel Aviation Industry Corporation)

RQ-6 precursor

RQ-7 shadow

RQ- 1 1A raven

Gnat -750

Scanning eagle

longan

BQM-74E stone pot chicken

The National Aeronautics and Space Administration (NASA) of the United States once funded the research of a solar-powered unmanned aerial vehicle, which is called the Sun God. At 200 1 year, the sun god reached a height of about 30 kilometers. On June 26th, 2003, Apollo UAV disintegrated and exploded over the Pacific Ocean.

Commercial interest in non-military drones has led some startups to design and sell self-driving aircraft.